Login to your npm account
📦 Node.js-> Command Line
✨ The Prompt Phrase
npm login
💻 Code Preview
📦 All-in-One Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Login to your npm account - Interactive Tutorial</title>
<link href="https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700;900&family=Fira+Code:wght@400;500;600&display=swap" rel="stylesheet">
<style>
:root {
--bg-primary: #0a0e27;
--bg-secondary: #151932;
--bg-card: #1e2139;
--accent-purple: #a855f7;
--accent-blue: #3b82f6;
--accent-green: #10b981;
--accent-red: #ef4444;
--accent-yellow: #f59e0b;
--accent-pink: #ec4899;
--accent-cyan: #06b6d4;
--accent-npm: #cb3837;
--text-primary: #f8fafc;
--text-secondary: #94a3b8;
--gradient-npm: linear-gradient(135deg, #cb3837 0%, #ef4444 100%);
--gradient-auth: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
--shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: 'Poppins', sans-serif;
background: var(--bg-primary);
color: var(--text-primary);
line-height: 1.6;
overflow-x: hidden;
}
.container {
max-width: 1200px;
margin: 0 auto;
padding: 20px;
}
.progress-container {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 5px;
background: var(--bg-secondary);
z-index: 1000;
}
.progress-bar {
height: 100%;
background: var(--gradient-npm);
width: 0%;
transition: width 0.3s ease;
}
.hero {
text-align: center;
padding: 100px 20px;
background: var(--gradient-npm);
position: relative;
overflow: hidden;
border-radius: 0 0 50px 50px;
}
.hero::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
animation: float 20s linear infinite;
}
@keyframes float {
from { transform: translateY(0); }
to { transform: translateY(-100px); }
}
.hero-content {
position: relative;
z-index: 1;
}
.login-icon {
font-size: 5rem;
margin-bottom: 20px;
animation: loginPulse 2s ease-in-out infinite;
}
@keyframes loginPulse {
0%, 100% { transform: scale(1) rotate(0deg); }
50% { transform: scale(1.1) rotate(-5deg); }
}
.command-display {
display: inline-block;
background: rgba(0, 0, 0, 0.4);
padding: 25px 40px;
border-radius: 15px;
font-family: 'Fira Code', monospace;
font-size: 2rem;
margin: 30px 0;
border: 3px solid rgba(255, 255, 255, 0.3);
animation: pulse 2s ease-in-out infinite;
color: white;
font-weight: 600;
}
@keyframes pulse {
0%, 100% { transform: scale(1); }
50% { transform: scale(1.05); }
}
.hero h1 {
font-size: 3.5rem;
font-weight: 900;
margin-bottom: 20px;
color: white;
text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}
.hero p {
font-size: 1.4rem;
opacity: 0.95;
color: white;
}
.section {
margin: 60px 0;
}
.section-title {
font-size: 2.5rem;
margin-bottom: 30px;
background: var(--gradient-npm);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
display: inline-block;
font-weight: 700;
}
.card {
background: var(--bg-card);
border-radius: 20px;
padding: 40px;
margin: 30px 0;
box-shadow: var(--shadow);
border: 1px solid rgba(255, 255, 255, 0.05);
transition: transform 0.3s ease;
}
.card:hover {
transform: translateY(-5px);
}
.code-block {
background: #1e1e1e;
border-radius: 15px;
padding: 25px;
margin: 20px 0;
font-family: 'Fira Code', monospace;
position: relative;
}
.code-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 15px;
padding-bottom: 15px;
border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.terminal-dots {
display: flex;
gap: 6px;
}
.terminal-dot {
width: 12px;
height: 12px;
border-radius: 50%;
}
.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }
.copy-btn {
background: var(--accent-purple);
color: white;
border: none;
padding: 8px 16px;
border-radius: 8px;
cursor: pointer;
font-size: 0.9rem;
transition: all 0.3s ease;
}
.copy-btn:hover {
background: var(--accent-blue);
transform: scale(1.05);
}
.copy-btn.copied {
background: var(--accent-green);
}
pre {
margin: 0;
overflow-x: auto;
}
code {
color: #e0e0e0;
font-size: 0.95rem;
line-height: 1.8;
}
.code-comment { color: #6a9955; }
.code-string { color: #ce9178; }
.code-keyword { color: #569cd6; }
.code-npm { color: #cb3837; font-weight: 600; }
.code-input { color: #4ec9b0; }
.steps {
counter-reset: step-counter;
}
.step {
background: var(--bg-secondary);
border-radius: 15px;
padding: 30px;
margin: 20px 0;
position: relative;
padding-left: 100px;
transition: all 0.3s ease;
}
.step:hover {
background: var(--bg-card);
transform: translateX(10px);
}
.step::before {
counter-increment: step-counter;
content: counter(step-counter);
position: absolute;
left: 20px;
top: 50%;
transform: translateY(-50%);
width: 60px;
height: 60px;
background: var(--gradient-npm);
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
font-size: 1.8rem;
font-weight: 900;
color: white;
}
.step h3 {
color: var(--accent-npm);
margin-bottom: 10px;
font-size: 1.5rem;
}
.feature-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 25px;
margin: 30px 0;
}
.feature-card {
background: var(--bg-secondary);
padding: 30px;
border-radius: 15px;
text-align: center;
transition: all 0.3s ease;
border: 2px solid transparent;
}
.feature-card:hover {
border-color: var(--accent-npm);
transform: translateY(-10px);
}
.feature-icon {
font-size: 3.5rem;
margin-bottom: 15px;
}
.feature-title {
font-weight: 600;
color: var(--accent-npm);
margin-bottom: 10px;
font-size: 1.3rem;
}
.demo-container {
background: var(--bg-secondary);
border-radius: 20px;
padding: 40px;
margin: 30px 0;
}
.login-simulator {
background: var(--bg-card);
border-radius: 15px;
padding: 30px;
margin: 30px 0;
border: 2px solid var(--accent-npm);
}
.login-input {
width: 100%;
background: #1e1e1e;
border: 2px solid var(--accent-cyan);
border-radius: 10px;
padding: 15px;
color: var(--text-primary);
font-family: 'Fira Code', monospace;
font-size: 1rem;
margin: 10px 0;
}
.login-input:focus {
outline: none;
border-color: var(--accent-green);
}
.login-btn {
background: var(--gradient-npm);
color: white;
border: none;
padding: 15px 30px;
border-radius: 10px;
font-size: 1.1rem;
font-weight: 600;
cursor: pointer;
transition: all 0.3s ease;
width: 100%;
}
.login-btn:hover {
transform: scale(1.02);
box-shadow: 0 5px 20px rgba(203, 56, 55, 0.4);
}
.terminal {
background: #1e1e1e;
border-radius: 15px;
padding: 20px;
font-family: 'Fira Code', monospace;
min-height: 300px;
margin: 20px 0;
overflow-y: auto;
max-height: 500px;
}
.terminal-line {
margin: 10px 0;
}
.terminal-prompt {
color: var(--accent-green);
}
.terminal-success {
color: var(--accent-green);
font-weight: 600;
}
.terminal-error {
color: var(--accent-red);
}
.demo-button {
background: var(--gradient-npm);
color: white;
border: none;
padding: 15px 40px;
border-radius: 50px;
font-size: 1.1rem;
font-weight: 600;
cursor: pointer;
transition: all 0.3s ease;
display: inline-flex;
align-items: center;
gap: 10px;
margin: 10px;
}
.demo-button:hover {
transform: scale(1.05);
box-shadow: 0 10px 30px rgba(203, 56, 55, 0.4);
}
.auth-methods {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: 20px;
margin: 30px 0;
}
.auth-method {
background: var(--bg-secondary);
padding: 25px;
border-radius: 15px;
border: 2px solid transparent;
transition: all 0.3s ease;
}
.auth-method:hover {
border-color: var(--accent-cyan);
transform: scale(1.02);
}
.tabs {
display: flex;
gap: 10px;
margin-bottom: 20px;
flex-wrap: wrap;
}
.tab {
padding: 12px 24px;
background: var(--bg-secondary);
border: none;
border-radius: 10px;
color: var(--text-primary);
cursor: pointer;
transition: all 0.3s ease;
font-size: 1rem;
}
.tab:hover {
background: var(--bg-card);
}
.tab.active {
background: var(--gradient-npm);
color: white;
}
.tab-content {
display: none;
}
.tab-content.active {
display: block;
}
.accordion-header {
cursor: pointer;
display: flex;
justify-content: space-between;
align-items: center;
padding: 20px;
background: var(--bg-secondary);
border-radius: 12px;
margin: 15px 0;
transition: all 0.3s ease;
}
.accordion-header:hover {
background: var(--bg-card);
}
.accordion-icon {
transition: transform 0.3s ease;
font-size: 1.2rem;
}
.accordion-icon.active {
transform: rotate(180deg);
}
.accordion-content {
max-height: 0;
overflow: hidden;
transition: max-height 0.3s ease;
}
.accordion-content.active {
max-height: 2000px;
}
.accordion-body {
padding: 20px;
background: var(--bg-secondary);
border-radius: 12px;
margin-top: 5px;
}
.tip, .warning, .success, .info {
padding: 20px;
border-radius: 10px;
margin: 20px 0;
}
.tip {
background: rgba(59, 130, 246, 0.1);
border-left: 4px solid var(--accent-blue);
}
.tip::before { content: '💡 '; font-size: 1.5rem; }
.warning {
background: rgba(239, 68, 68, 0.1);
border-left: 4px solid var(--accent-red);
}
.warning::before { content: '⚠️ '; font-size: 1.5rem; }
.success {
background: rgba(16, 185, 129, 0.1);
border-left: 4px solid var(--accent-green);
}
.success::before { content: '✅ '; font-size: 1.5rem; }
.info {
background: rgba(236, 72, 153, 0.1);
border-left: 4px solid var(--accent-pink);
}
.info::before { content: '🔍 '; font-size: 1.5rem; }
.quiz-container {
background: var(--bg-card);
border-radius: 20px;
padding: 40px;
margin: 30px 0;
}
.quiz-question {
margin: 30px 0;
}
.quiz-question h3 {
color: var(--accent-purple);
margin-bottom: 20px;
font-size: 1.3rem;
}
.quiz-options {
display: flex;
flex-direction: column;
gap: 15px;
}
.quiz-option {
background: var(--bg-secondary);
padding: 20px;
border-radius: 12px;
cursor: pointer;
transition: all 0.3s ease;
border: 2px solid transparent;
}
.quiz-option:hover {
border-color: var(--accent-blue);
transform: translateX(10px);
}
.quiz-option.correct {
border-color: var(--accent-green);
background: rgba(16, 185, 129, 0.1);
}
.quiz-option.incorrect {
border-color: var(--accent-red);
background: rgba(239, 68, 68, 0.1);
}
.quiz-feedback {
margin-top: 15px;
padding: 15px;
border-radius: 10px;
display: none;
}
.quiz-feedback.show {
display: block;
}
.quiz-feedback.correct {
background: rgba(16, 185, 129, 0.1);
border-left: 4px solid var(--accent-green);
}
.quiz-feedback.incorrect {
background: rgba(239, 68, 68, 0.1);
border-left: 4px solid var(--accent-red);
}
.cheat-sheet {
background: var(--gradient-npm);
border-radius: 20px;
padding: 40px;
margin: 30px 0;
color: white;
}
.cheat-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 20px;
margin-top: 30px;
}
.cheat-item {
background: rgba(255, 255, 255, 0.15);
backdrop-filter: blur(10px);
padding: 20px;
border-radius: 15px;
border: 1px solid rgba(255, 255, 255, 0.2);
}
.cheat-item h4 {
color: white;
margin-bottom: 10px;
font-weight: 600;
}
.cheat-item code {
background: rgba(0, 0, 0, 0.3);
padding: 4px 8px;
border-radius: 5px;
font-size: 0.9rem;
color: white;
}
.highlight {
color: var(--accent-yellow);
font-weight: 600;
}
.footer {
text-align: center;
padding: 40px 20px;
background: var(--bg-secondary);
margin-top: 80px;
border-radius: 20px;
}
.footer p {
color: var(--text-secondary);
margin: 10px 0;
}
.badge {
display: inline-block;
padding: 6px 12px;
background: var(--gradient-npm);
border-radius: 20px;
font-size: 0.85rem;
font-weight: 600;
margin: 5px;
}
.confetti {
position: fixed;
width: 10px;
height: 10px;
background: var(--accent-npm);
animation: confetti-fall 3s linear forwards;
z-index: 9999;
}
@keyframes confetti-fall {
to {
transform: translateY(100vh) rotate(360deg);
opacity: 0;
}
}
@media (max-width: 768px) {
.hero h1 { font-size: 2rem; }
.command-display { font-size: 1.3rem; padding: 15px 20px; }
.section-title { font-size: 1.8rem; }
.card { padding: 25px; }
.step { padding-left: 80px; }
.step::before { width: 50px; height: 50px; font-size: 1.5rem; }
}
</style>
</head>
<body>
<div class="progress-container">
<div class="progress-bar" id="progressBar"></div>
</div>
<div class="hero">
<div class="hero-content">
<div class="login-icon">🔐</div>
<h1>Master npm login!</h1>
<div class="command-display">npm login</div>
<p>Authenticate and unlock npm's power! 🚀</p>
</div>
</div>
<div class="container">
<!-- What Is It -->
<section class="section">
<h2 class="section-title">🤔 What Is npm login?</h2>
<div class="card">
<p style="font-size: 1.2rem; margin-bottom: 20px;">
<code>npm login</code> is the command that <span class="highlight">authenticates you</span> with the npm registry, allowing you to <strong>publish packages</strong>, access private packages, and manage your npm account from the command line! 🔐
</p>
<p style="margin-bottom: 20px;">
Think of it like logging into your email! 📧 You need to prove who you are before you can send emails (publish packages) or access your private inbox (private packages). Once logged in, npm remembers you on that machine!
</p>
<div class="info">
<strong>Breaking It Down:</strong>
<ul style="margin-left: 30px; margin-top: 10px; line-height: 2;">
<li><code class="code-npm">npm</code> - Node Package Manager</li>
<li><code class="code-npm">login</code> - Authenticate with npm registry</li>
<li>Prompts for: username, password, email, and optional 2FA code</li>
<li>Stores authentication token locally in <code>~/.npmrc</code></li>
<li>Enables publishing and accessing private packages</li>
</ul>
</div>
<div style="margin-top: 30px;">
<h3 style="color: var(--accent-pink); margin-bottom: 15px;">What's an Auth Token? 🔍</h3>
<p>After login, npm creates an authentication token - a secret key that proves your identity. It's stored in your home directory so you don't have to login every time!</p>
</div>
</div>
</section>
<!-- Authentication Methods -->
<section class="section">
<h2 class="section-title">🔑 Authentication Methods</h2>
<div class="card">
<div class="auth-methods">
<div class="auth-method">
<h3 style="color: var(--accent-cyan); margin-bottom: 15px;">🔐 Classic Login</h3>
<p style="color: var(--text-secondary); margin-bottom: 10px;">Username + Password</p>
<code style="background: #1e1e1e; padding: 10px; display: block; border-radius: 8px;">npm login</code>
<p style="margin-top: 10px; font-size: 0.9rem;">Interactive prompts for credentials</p>
</div>
<div class="auth-method">
<h3 style="color: var(--accent-green); margin-bottom: 15px;">🔒 With 2FA</h3>
<p style="color: var(--text-secondary); margin-bottom: 10px;">Two-Factor Authentication</p>
<code style="background: #1e1e1e; padding: 10px; display: block; border-radius: 8px;">npm login</code>
<p style="margin-top: 10px; font-size: 0.9rem;">Prompts for OTP code from authenticator app</p>
</div>
<div class="auth-method">
<h3 style="color: var(--accent-purple); margin-bottom: 15px;">🎫 Token Auth</h3>
<p style="color: var(--text-secondary); margin-bottom: 10px;">Access Token</p>
<code style="background: #1e1e1e; padding: 10px; display: block; border-radius: 8px;">npm config set //registry.npmjs.org/:_authToken=TOKEN</code>
<p style="margin-top: 10px; font-size: 0.9rem;">For CI/CD environments</p>
</div>
</div>
</div>
</section>
<!-- Why Use It -->
<section class="section">
<h2 class="section-title">✨ Why Use npm login?</h2>
<div class="card">
<div class="feature-grid">
<div class="feature-card">
<div class="feature-icon">📦</div>
<div class="feature-title">Publish Packages</div>
<p style="color: var(--text-secondary);">Share your code!</p>
</div>
<div class="feature-card">
<div class="feature-icon">🔒</div>
<div class="feature-title">Private Packages</div>
<p style="color: var(--text-secondary);">Access restricted code!</p>
</div>
<div class="feature-card">
<div class="feature-icon">👤</div>
<div class="feature-title">Account Management</div>
<p style="color: var(--text-secondary);">Manage your profile!</p>
</div>
<div class="feature-card">
<div class="feature-icon">🏢</div>
<div class="feature-title">Organization Access</div>
<p style="color: var(--text-secondary);">Team collaboration!</p>
</div>
<div class="feature-card">
<div class="feature-icon">🔄</div>
<div class="feature-title">Update Packages</div>
<p style="color: var(--text-secondary);">Maintain your code!</p>
</div>
<div class="feature-card">
<div class="feature-icon">📊</div>
<div class="feature-title">View Stats</div>
<p style="color: var(--text-secondary);">Track downloads!</p>
</div>
</div>
</div>
</section>
<!-- How It Works -->
<section class="section">
<h2 class="section-title">⚙️ How Does It Work?</h2>
<div class="card">
<div class="steps">
<div class="step">
<h3>Step 1: Command Executed</h3>
<p>You run <code>npm login</code> in your terminal.</p>
</div>
<div class="step">
<h3>Step 2: Username Prompt</h3>
<p>npm asks for your npm username.</p>
</div>
<div class="step">
<h3>Step 3: Password Prompt</h3>
<p>Enter your npm password (hidden for security).</p>
</div>
<div class="step">
<h3>Step 4: Email Prompt</h3>
<p>Provide your public email address.</p>
</div>
<div class="step">
<h3>Step 5: 2FA (if enabled)</h3>
<p>Enter one-time password from authenticator app.</p>
</div>
<div class="step">
<h3>Step 6: Token Stored</h3>
<p>Auth token saved to ~/.npmrc - you're logged in! 🎉</p>
</div>
</div>
</div>
</section>
<!-- Live Demo -->
<section class="section">
<h2 class="section-title">🎮 Login Simulator</h2>
<div class="demo-container">
<div class="login-simulator">
<h3 style="margin-bottom: 15px;">Try the Login Flow! 🔐</h3>
<label style="display: block; margin-bottom: 10px; font-weight: 600;">Username:</label>
<input type="text" class="login-input" id="username" placeholder="your-username" value="john_developer">
<label style="display: block; margin-top: 15px; margin-bottom: 10px; font-weight: 600;">Password:</label>
<input type="password" class="login-input" id="password" placeholder="••••••••" value="password123">
<label style="display: block; margin-top: 15px; margin-bottom: 10px; font-weight: 600;">Email:</label>
<input type="email" class="login-input" id="email" placeholder="you@example.com" value="john@example.com">
<button class="login-btn" onclick="simulateLogin()">🔐 Login to npm</button>
</div>
<div style="margin-top: 30px;">
<h4 style="margin-bottom: 15px;">Quick Demos:</h4>
<button class="demo-button" onclick="simulateSuccess()">
<span>✅</span>
<span>Successful Login</span>
</button>
<button class="demo-button" onclick="simulate2FA()">
<span>🔒</span>
<span>Login with 2FA</span>
</button>
<button class="demo-button" onclick="simulateError()">
<span>❌</span>
<span>Failed Login</span>
</button>
</div>
<div class="terminal" id="terminal">
<div class="terminal-line">
<span class="terminal-prompt">$</span>
<span style="color: var(--text-secondary);"> Ready to authenticate...</span>
</div>
</div>
</div>
</section>
<!-- Code Breakdown -->
<section class="section">
<h2 class="section-title">💻 Complete Login Guide</h2>
<div class="card">
<div class="tabs">
<button class="tab active" onclick="switchTab('basic')">Basic Login</button>
<button class="tab" onclick="switchTab('verify')">Verify Login</button>
<button class="tab" onclick="switchTab('logout')">Logout</button>
<button class="tab" onclick="switchTab('cicd')">CI/CD Setup</button>
</div>
<div id="basic" class="tab-content active">
<h3 style="color: var(--accent-pink); margin-bottom: 15px;">Basic Login Process</h3>
<div class="code-block">
<div class="code-header">
<div class="terminal-dots">
<div class="terminal-dot dot-red"></div>
<div class="terminal-dot dot-yellow"></div>
<div class="terminal-dot dot-green"></div>
</div>
<button class="copy-btn" onclick="copyCode('basic-code')">📋 Copy</button>
</div>
<pre><code id="basic-code"><span class="code-comment"># Start the login process</span>
npm login
<span class="code-comment"># You'll see prompts like this:</span>
Username: <span class="code-input">your-username</span>
Password: <span class="code-input">••••••••</span>
Email: (this IS public) <span class="code-input">you@example.com</span>
<span class="code-comment"># If 2FA is enabled:</span>
Enter one-time password: <span class="code-input">123456</span>
<span class="code-comment"># Success message:</span>
Logged in as <span class="code-input">your-username</span> on https://registry.npmjs.org/.</code></pre>
</div>
<div class="success" style="margin-top: 15px;">
<strong>Result:</strong> You're now authenticated and can publish packages!
</div>
</div>
<div id="verify" class="tab-content">
<h3 style="color: var(--accent-pink); margin-bottom: 15px;">Verify Your Login</h3>
<div class="code-block">
<div class="code-header">
<div class="terminal-dots">
<div class="terminal-dot dot-red"></div>
<div class="terminal-dot dot-yellow"></div>
<div class="terminal-dot dot-green"></div>
</div>
<button class="copy-btn" onclick="copyCode('verify-code')">📋 Copy</button>
</div>
<pre><code id="verify-code"><span class="code-comment"># Check who you're logged in as</span>
npm whoami
<span class="code-comment"># Output: your-username</span>
<span class="code-comment"># View your npm configuration</span>
npm config list
<span class="code-comment"># Check auth token (be careful with this!)</span>
npm config get //registry.npmjs.org/:_authToken
<span class="code-comment"># View your profile</span>
npm profile get</code></pre>
</div>
<div class="tip" style="margin-top: 15px;">
<strong>Pro Tip:</strong> Use <code>npm whoami</code> to quickly verify you're logged in!
</div>
</div>
<div id="logout" class="tab-content">
<h3 style="color: var(--accent-pink); margin-bottom: 15px;">Logout Safely</h3>
<div class="code-block">
<div class="code-header">
<div class="terminal-dots">
<div class="terminal-dot dot-red"></div>
<div class="terminal-dot dot-yellow"></div>
<div class="terminal-dot dot-green"></div>
</div>
<button class="copy-btn" onclick="copyCode('logout-code')">📋 Copy</button>
</div>
<pre><code id="logout-code"><span class="code-comment"># Logout from npm</span>
npm logout
<span class="code-comment"># This removes your auth token from ~/.npmrc</span>
<span class="code-comment"># Verify you're logged out</span>
npm whoami
<span class="code-comment"># Output: npm ERR! need auth</span>
<span class="code-comment"># Manually remove token (alternative)</span>
npm config delete //registry.npmjs.org/:_authToken</code></pre>
</div>
<div class="warning" style="margin-top: 15px;">
<strong>Important:</strong> Always logout on shared computers!
</div>
</div>
<div id="cicd" class="tab-content">
<h3 style="color: var(--accent-pink); margin-bottom: 15px;">CI/CD Authentication</h3>
<div class="code-block">
<div class="code-header">
<div class="terminal-dots">
<div class="terminal-dot dot-red"></div>
<div class="terminal-dot dot-yellow"></div>
<div class="terminal-dot dot-green"></div>
</div>
<button class="copy-btn" onclick="copyCode('cicd-code')">📋 Copy</button>
</div>
<pre><code id="cicd-code"><span class="code-comment"># Generate an access token at npmjs.com/settings/tokens</span>
<span class="code-comment"># Set token via environment variable</span>
echo "//registry.npmjs.org/:_authToken=\${NPM_TOKEN}" > ~/.npmrc
<span class="code-comment"># GitHub Actions example</span>
- name: Setup Node.js
uses: actions/setup-node@v3
with:
node-version: '18'
registry-url: 'https://registry.npmjs.org'
- name: Publish
run: npm publish
env:
NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
<span class="code-comment"># GitLab CI example</span>
publish:
script:
- echo "//registry.npmjs.org/:_authToken=\${NPM_TOKEN}" > ~/.npmrc
- npm publish</code></pre>
</div>
<div class="info" style="margin-top: 15px;">
<strong>Note:</strong> Never commit auth tokens to git! Use environment variables.
</div>
</div>
</div>
</section>
<!-- Common Mistakes -->
<section class="section">
<h2 class="section-title">❌ Common Mistakes</h2>
<div class="card">
<div class="accordion">
<div class="accordion-item">
<div class="accordion-header" onclick="toggleAccordion(this)">
<span><strong>1. Wrong Credentials</strong></span>
<span class="accordion-icon">▼</span>
</div>
<div class="accordion-content">
<div class="accordion-body">
<div class="warning">
<strong>Problem:</strong> Error: "Incorrect username or password"
</div>
<div class="success" style="margin-top: 15px;">
<strong>Solution:</strong> Double-check your credentials. Reset password at npmjs.com if needed!
</div>
</div>
</div>
</div>
<div class="accordion-item">
<div class="accordion-header" onclick="toggleAccordion(this)">
<span><strong>2. Missing 2FA Code</strong></span>
<span class="accordion-icon">▼</span>
</div>
<div class="accordion-content">
<div class="accordion-body">
<div class="warning">
<strong>Problem:</strong> Login hangs or fails when 2FA is enabled
</div>
<div class="success" style="margin-top: 15px;">
<strong>Solution:</strong> Have your authenticator app ready for the OTP code prompt!
</div>
</div>
</div>
</div>
<div class="accordion-item">
<div class="accordion-header" onclick="toggleAccordion(this)">
<span><strong>3. No npm Account</strong></span>
<span class="accordion-icon">▼</span>
</div>
<div class="accordion-content">
<div class="accordion-body">
<div class="warning">
<strong>Problem:</strong> Trying to login without an account
</div>
<div class="success" style="margin-top: 15px;">
<strong>Solution:</strong> Create account first at npmjs.com/signup or use <code>npm adduser</code>
</div>
</div>
</div>
</div>
<div class="accordion-item">
<div class="accordion-header" onclick="toggleAccordion(this)">
<span><strong>4. Token in Git Repo</strong></span>
<span class="accordion-icon">▼</span>
</div>
<div class="accordion-content">
<div class="accordion-body">
<div class="warning">
<strong>Problem:</strong> Accidentally committing .npmrc with auth token
</div>
<div class="success" style="margin-top: 15px;">
<strong>Solution:</strong> Add .npmrc to .gitignore! Revoke exposed tokens immediately!
</div>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- Pro Tips -->
<section class="section">
<h2 class="section-title">🚀 Pro Tips</h2>
<div class="card">
<div class="tip">
<strong>Enable 2FA</strong> - Protect your account with two-factor authentication at npmjs.com/settings/profile!
</div>
<div class="tip">
<strong>Use access tokens</strong> - Generate automation tokens for CI/CD instead of using your password!
</div>
<div class="tip">
<strong>Check before publishing</strong> - Always run <code>npm whoami</code> to verify you're logged in as the right user!
</div>
<div class="tip">
<strong>Logout on shared machines</strong> - Use <code>npm logout</code> when done on public computers!
</div>
<div class="tip">
<strong>Scope your packages</strong> - Use <code>@username/package</code> format to avoid name conflicts!
</div>
<div class="tip">
<strong>Token types matter</strong> - Use "Automation" tokens for CI/CD, "Publish" for manual publishing!
</div>
<div class="tip">
<strong>Keep tokens secret</strong> - Never share or commit auth tokens. Treat them like passwords!
</div>
</div>
</section>
<!-- Quiz -->
<section class="section">
<h2 class="section-title">🎯 Knowledge Check Quiz</h2>
<div class="quiz-container">
<p style="margin-bottom: 30px; font-size: 1.1rem;">Test your understanding! 🧠</p>
<div class="quiz-question">
<h3>Question 1: Where is the auth token stored?</h3>
<div class="quiz-options">
<div class="quiz-option" onclick="checkAnswer(this, false, 1)">A) In package.json</div>
<div class="quiz-option" onclick="checkAnswer(this, true, 1)">B) In ~/.npmrc file</div>
<div class="quiz-option" onclick="checkAnswer(this, false, 1)">C) In node_modules</div>
</div>
<div class="quiz-feedback" id="feedback1"></div>
</div>
<div class="quiz-question">
<h3>Question 2: How do you verify you're logged in?</h3>
<div class="quiz-options">
<div class="quiz-option" onclick="checkAnswer(this, false, 2)">A) npm check</div>
<div class="quiz-option" onclick="checkAnswer(this, true, 2)">B) npm whoami</div>
<div class="quiz-option" onclick="checkAnswer(this, false, 2)">C) npm status</div>
</div>
<div class="quiz-feedback" id="feedback2"></div>
</div>
<div class="quiz-question">
<h3>Question 3: What's the safest way for CI/CD?</h3>
<div class="quiz-options">
<div class="quiz-option" onclick="checkAnswer(this, false, 3)">A) Commit .npmrc to repo</div>
<div class="quiz-option" onclick="checkAnswer(this, true, 3)">B) Use automation token in env variable</div>
<div class="quiz-option" onclick="checkAnswer(this, false, 3)">C) Share your password</div>
</div>
<div class="quiz-feedback" id="feedback3"></div>
</div>
<div id="quizScore" style="margin-top: 30px; padding: 20px; background: var(--bg-secondary); border-radius: 12px; display: none;">
<h3 style="color: var(--accent-green); font-size: 1.5rem;">🎉 Quiz Complete!</h3>
<p id="scoreText" style="font-size: 1.2rem; margin-top: 10px;"></p>
</div>
</div>
</section>
<!-- Summary Card -->
<section class="section">
<h2 class="section-title">📚 Quick Reference</h2>
<div class="cheat-sheet">
<h3 style="margin-bottom: 20px; font-size: 2rem;">npm login Cheat Sheet! 🔖</h3>
<div class="cheat-grid">
<div class="cheat-item">
<h4>🔐 Login</h4>
<p><code>npm login</code></p>
<p style="font-size: 0.85rem; margin-top: 5px;">Authenticate with npm</p>
</div>
<div class="cheat-item">
<h4>👤 Check User</h4>
<p><code>npm whoami</code></p>
<p style="font-size: 0.85rem; margin-top: 5px;">See current user</p>
</div>
<div class="cheat-item">
<h4>🚪 Logout</h4>
<p><code>npm logout</code></p>
<p style="font-size: 0.85rem; margin-top: 5px;">Remove auth token</p>
</div>
<div class="cheat-item">
<h4>➕ Create Account</h4>
<p><code>npm adduser</code></p>
<p style="font-size: 0.85rem; margin-top: 5px;">Same as login</p>
</div>
<div class="cheat-item">
<h4>📊 Profile</h4>
<p><code>npm profile get</code></p>
<p style="font-size: 0.85rem; margin-top: 5px;">View your info</p>
</div>
<div class="cheat-item">
<h4>🎫 Token Location</h4>
<p><code>~/.npmrc</code></p>
<p style="font-size: 0.85rem; margin-top: 5px;">Auth token file</p>
</div>
<div class="cheat-item">
<h4>🔒 Enable 2FA</h4>
<p>npmjs.com/settings</p>
<p style="font-size: 0.85rem; margin-top: 5px;">Security settings</p>
</div>
<div class="cheat-item">
<h4>🤖 CI/CD Token</h4>
<p>Use automation token</p>
<p style="font-size: 0.85rem; margin-top: 5px;">In env variable</p>
</div>
</div>
</div>
</section>
<!-- Footer -->
<div class="footer">
<h2 style="font-size: 2rem; margin-bottom: 20px; color: var(--accent-pink);">🎉 Congratulations!</h2>
<p style="font-size: 1.2rem; margin-bottom: 20px;">You now understand <strong>npm login</strong>! 🚀</p>
<div style="margin: 30px 0;">
<span class="badge">🔐 Auth Expert</span>
<span class="badge">🔑 Security Pro</span>
<span class="badge">🚀 npm Master</span>
</div>
<p style="color: var(--text-secondary); margin-top: 30px;">Generated by <strong>AI Prompt Dictionary</strong> 🤖</p>
<p style="color: var(--text-secondary); font-size: 0.9rem;">Made with ❤️ for developers learning npm</p>
</div>
</div>
<script>
// Progress bar
window.addEventListener('scroll', () => {
const winScroll = document.body.scrollTop || document.documentElement.scrollTop;
const height = document.documentElement.scrollHeight - document.documentElement.clientHeight;
const scrolled = (winScroll / height) * 100;
document.getElementById('progressBar').style.width = scrolled + '%';
});
// Copy to clipboard
function copyCode(codeId) {
const code = document.getElementById(codeId).innerText;
navigator.clipboard.writeText(code).then(() => {
event.target.textContent = '✅ Copied!';
event.target.classList.add('copied');
setTimeout(() => {
event.target.textContent = '📋 Copy';
event.target.classList.remove('copied');
}, 2000);
});
}
// Tab switching
function switchTab(tabName) {
document.querySelectorAll('.tab-content').forEach(c => c.classList.remove('active'));
document.querySelectorAll('.tab').forEach(t => t.classList.remove('active'));
document.getElementById(tabName).classList.add('active');
event.target.classList.add('active');
}
// Accordion toggle
function toggleAccordion(header) {
const content = header.nextElementSibling;
const icon = header.querySelector('.accordion-icon');
content.classList.toggle('active');
icon.classList.toggle('active');
}
// Simulate login
function simulateLogin() {
const username = document.getElementById('username').value;
const email = document.getElementById('email').value;
const terminal = document.getElementById('terminal');
terminal.innerHTML = `<div class="terminal-line"><span class="terminal-prompt">$</span> npm login</div>`;
setTimeout(() => {
terminal.innerHTML += '<div style="color: var(--accent-cyan); margin-top: 10px;">Username: <span style="color: var(--text-primary);">' + username + '</span></div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Password: <span style="color: var(--text-primary);">••••••••</span></div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Email: (this IS public) <span style="color: var(--text-primary);">' + email + '</span></div>';
}, 500);
setTimeout(() => {
terminal.innerHTML += `<div class="terminal-success" style="margin-top: 15px;">Logged in as ${username} on https://registry.npmjs.org/.</div>`;
terminal.innerHTML += '<div style="color: var(--accent-green); margin-top: 10px;">✅ Authentication successful!</div>';
createConfetti();
}, 1500);
}
// Simulate success
function simulateSuccess() {
const terminal = document.getElementById('terminal');
terminal.innerHTML = '<div class="terminal-line"><span class="terminal-prompt">$</span> npm login</div>';
setTimeout(() => {
terminal.innerHTML += '<div style="color: var(--accent-cyan); margin-top: 10px;">Username: john_developer</div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Password: ••••••••</div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Email: (this IS public) john@example.com</div>';
}, 500);
setTimeout(() => {
terminal.innerHTML += '<div class="terminal-success" style="margin-top: 15px;">Logged in as john_developer on https://registry.npmjs.org/.</div>';
terminal.innerHTML += '<div style="color: var(--text-secondary); margin-top: 10px;">Token stored in ~/.npmrc</div>';
createConfetti();
}, 1500);
}
// Simulate 2FA
function simulate2FA() {
const terminal = document.getElementById('terminal');
terminal.innerHTML = '<div class="terminal-line"><span class="terminal-prompt">$</span> npm login</div>';
setTimeout(() => {
terminal.innerHTML += '<div style="color: var(--accent-cyan); margin-top: 10px;">Username: secure_dev</div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Password: ••••••••</div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Email: (this IS public) secure@example.com</div>';
}, 500);
setTimeout(() => {
terminal.innerHTML += '<div style="color: var(--accent-yellow); margin-top: 15px;">🔒 Two-factor authentication enabled</div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Enter one-time password: 123456</div>';
}, 1200);
setTimeout(() => {
terminal.innerHTML += '<div class="terminal-success" style="margin-top: 15px;">Logged in as secure_dev on https://registry.npmjs.org/.</div>';
terminal.innerHTML += '<div style="color: var(--accent-green); margin-top: 5px;">✅ 2FA verified successfully!</div>';
createConfetti();
}, 2000);
}
// Simulate error
function simulateError() {
const terminal = document.getElementById('terminal');
terminal.innerHTML = '<div class="terminal-line"><span class="terminal-prompt">$</span> npm login</div>';
setTimeout(() => {
terminal.innerHTML += '<div style="color: var(--accent-cyan); margin-top: 10px;">Username: wrong_user</div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Password: ••••••••</div>';
terminal.innerHTML += '<div style="color: var(--accent-cyan);">Email: (this IS public) wrong@example.com</div>';
}, 500);
setTimeout(() => {
terminal.innerHTML += '<div class="terminal-error" style="margin-top: 15px;">npm ERR! code E401</div>';
terminal.innerHTML += '<div class="terminal-error">npm ERR! 401 Unauthorized - PUT https://registry.npmjs.org/-/user/org.couchdb.user:wrong_user</div>';
terminal.innerHTML += '<div class="terminal-error">npm ERR! Incorrect username or password</div>';
terminal.innerHTML += '<div style="color: var(--accent-yellow); margin-top: 15px;">💡 Tip: Reset your password at npmjs.com if needed!</div>';
}, 1500);
}
// Quiz system
let quizScore = 0;
let questionsAnswered = 0;
function checkAnswer(element, isCorrect, questionNum) {
const options = element.parentElement.querySelectorAll('.quiz-option');
options.forEach(opt => opt.style.pointerEvents = 'none');
const feedback = document.getElementById('feedback' + questionNum);
if (isCorrect) {
element.classList.add('correct');
feedback.className = 'quiz-feedback correct show';
feedback.innerHTML = '<strong>🎉 Correct!</strong> Great job!';
quizScore++;
createConfetti();
} else {
element.classList.add('incorrect');
feedback.className = 'quiz-feedback incorrect show';
feedback.innerHTML = '<strong>❌ Not quite!</strong> Review the material and try again!';
}
questionsAnswered++;
if (questionsAnswered === 3) {
setTimeout(() => {
document.getElementById('quizScore').style.display = 'block';
document.getElementById('scoreText').textContent = `You scored ${quizScore}/3! ${quizScore === 3 ? '🏆 Perfect!' : quizScore === 2 ? '👍 Good job!' : '💪 Keep learning!'}`;
}, 1000);
}
}
// Confetti animation
function createConfetti() {
const colors = ['#cb3837', '#ef4444', '#3b82f6', '#06b6d4', '#10b981'];
for (let i = 0; i < 50; i++) {
const confetti = document.createElement('div');
confetti.className = 'confetti';
confetti.style.left = Math.random() * window.innerWidth + 'px';
confetti.style.background = colors[Math.floor(Math.random() * colors.length)];
confetti.style.animationDuration = (2 + Math.random() * 2) + 's';
document.body.appendChild(confetti);
setTimeout(() => confetti.remove(), 4000);
}
}
</script>
</body>
</html>
Live Preview