297 lines
8.0 KiB
HTML
297 lines
8.0 KiB
HTML
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<meta charset='utf-8'>
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<meta content='/express.html' name='app:pageurl'>
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<title>Express.js cheatsheet</title>
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<meta content="The one-page guide to Express.js: usage, examples, links, snippets, and more." name="description">
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This is <a href="."><em>Devhints.io cheatsheets</em></a> — a collection of cheatsheets I've written.
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"headline": "Express.js cheatsheet",
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"image": [ "https://assets.devhints.io/previews/express.jpg?t=20201203083858" ],
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"description": "The one-page guide to Express.js: usage, examples, links, snippets, and more."
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"item": {
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"@id": "https://devhints.io/express",
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"name": "Express.js"
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<div class='post-list -single -cheatsheet'>
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<div class='post-item'>
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<div class='post-headline -cheatsheet'>
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<p class='prelude'><span></span></p>
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<h1><span>Express.js</span></h1>
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<script async src='https://pubsrv.devhints.io/carbon.js?serve=CE7IK5QM&placement=devhintsio&cd=pubsrv.devhints.io/s' id="_carbonads_js"></script>
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<span class='placeholder -three'></span>
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<span class='placeholder -four'></span>
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</div>
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</div>
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</div>
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<div class='post-content -cheatsheet'>
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<h3 id="settings">Settings</h3>
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<pre><code class="language-js">app.set('x', 'yyy')
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app.get('x') //=> 'yyy'
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app.enable('trust proxy')
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app.disable('trust proxy')
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app.enabled('trust proxy') //=> true
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</code></pre>
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<h3 id="env">Env</h3>
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<pre><code class="language-js">app.get('env')
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</code></pre>
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<h3 id="config">Config</h3>
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<pre><code class="language-js">app.configure('production', function() {
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app.set...
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})
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</code></pre>
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<h3 id="wares">Wares</h3>
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<pre><code class="language-js">app.use(express.static(__dirname + '/public'))
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app.use(express.logger())
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</code></pre>
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<h3 id="helpers">Helpers</h3>
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<pre><code class="language-js">app.locals({
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title: "MyApp",
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})
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</code></pre>
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<h2 id="request--response">Request & response</h2>
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<h3 id="request">Request</h3>
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<pre><code class="language-js">// GET /user/tj
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req.path //=> "/user/tj"
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req.url //=> "/user/tj"
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req.xhr //=> true|false
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req.method //=> "GET"
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req.params
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req.params.name //=> "tj"
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req.params[0]
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</code></pre>
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<pre><code class="language-js">// GET /search?q=tobi+ferret
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req.query.q // => "tobi ferret"
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</code></pre>
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<pre><code class="language-js">req.cookies
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</code></pre>
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<pre><code class="language-js">req.accepted
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// [ { value: 'application/json', quality: 1, type: 'application', subtype: 'json' },
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// { value: 'text/html', quality: 0.5, type: 'text',subtype: 'html' } ]
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</code></pre>
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<pre><code class="language-js">req.is('html')
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req.is('text/html')
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</code></pre>
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<pre><code class="language-js">req.headers
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req.headers['host']
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req.headers['user-agent']
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req.headers['accept-encoding']
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req.headers['accept-language']
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</code></pre>
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<h3 id="response">Response</h3>
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<pre><code class="language-js">res.redirect('/')
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res.redirect(301, '/')
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</code></pre>
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<pre><code class="language-js">res.set('Content-Type', 'text/html')
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</code></pre>
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<pre><code class="language-js">res.send('hi')
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res.send(200, 'hi')
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</code></pre>
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<pre><code class="language-js">res.json({ a: 2 })
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</code></pre>
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</div>
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<ul class="social-list ">
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<li class="facebook link hint--bottom" data-hint="Share on Facebook"><a href="https://www.facebook.com/sharer/sharer.php?u=https://devhints.io/express.html" target="share"><span class="text"></span></a></li>
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</ul>
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</div>
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</div>
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<div class="about-the-site">
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<div class="container">
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<p class='blurb'>
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<strong><a href=".">Devhints.io cheatsheets</a></strong> is a collection of cheatsheets I've written over the years.
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Suggestions and corrections? <a href='https://github.com/rstacruz/cheatsheets/issues/907'>Send them in</a>.
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<i class='fleuron'></i>
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I'm <a href="http://ricostacruz.com">Rico Sta. Cruz</a>.
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Check out my <a href="http://ricostacruz.com/til">Today I learned blog</a> for more.
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</p>
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<p class='back'>
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<a class='big-button -back -slim' href='.#toc'></a>
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</p>
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<p>
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</p>
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</div>
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</div>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.5/highlight.min.js"></script>
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