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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<title>Fearless JavaScript</title>
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github.com style (c) Vasily Polovnyov <[email protected]>
*/
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</style>
</head>
<body>
<div class="progress">
<div class="progress-bar"></div>
</div>
<div class="slide title" id="slide-1">
<section class="slide-content"><h1 id="fearless-javascript">Fearless JavaScript</h1>
</section>
</div>
<div class="slide hidden presenter" id="slide-2">
<section class="slide-content"><p><img src="http://www.gravatar.com/avatar/de8cd250d9fe39b78f1c0f98b718670d.png?s=200" alt="Kevin Barabash"></p>
<h2 id="kevin-barabash">Kevin Barabash</h2>
<ul>
<li><a href="https://github.com/kevinb7"><i class="fa fa-github"></i> kevinb7</a></li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-3">
<section class="slide-content"><h1 id="agenda">Agenda</h1>
<ul>
<li>JavaScript</li>
<li>Tools</li>
<li>Interacting with the Community</li>
<li>APIs & libraries</li>
<li>Final Words of Wisdom</li>
<li>Questions</li>
</ul>
</section>
</div>
<div class="slide hidden title" id="slide-4">
<section class="slide-content"><h1 id="javascript">JavaScript</h1>
</section>
</div>
<div class="slide hidden" id="slide-5">
<section class="slide-content"><h1 id="javascript">JavaScript</h1>
<ul>
<li>Language<ul>
<li>keywords: <code>if</code>, <code>for</code>, <code>var</code>, <code>function</code>, etc; operators: <code>+</code>, <code>&&</code>, <code>===</code>, <code>!==</code>, etc.</li>
</ul>
</li>
<li>Standard Library<ul>
<li>String, Array, Function, RegExp, Date, Object, Math, setTimeout, etc.</li>
</ul>
</li>
<li>DOM</li>
<li>3rd party libraries</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-6">
<section class="slide-content"><h1 id="learn-the-language-first">Learn the Language First</h1>
<ul>
<li><code>this</code></li>
<li>closure (lambdas)</li>
<li>pass-by-reference vs. pass-by-value</li>
<li>prototype chain</li>
<li>function scope</li>
<li>type coercion</li>
<li>automatic semicolon insertion</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-7">
<section class="slide-content"><h1 id="javascript-the-good-parts">JavaScript the Good Parts</h1>
<iframe width="640" height="480" src="https://www.youtube.com/embed/hQVTIJBZook?rel=0&showinfo=0" frameborder="0" allowfullscreen></iframe></section>
</div>
<div class="slide hidden" id="slide-8">
<section class="slide-content"><h1 id="other-resources">Other Resources</h1>
<ul>
<li><a href="https://bonsaiden.github.io/JavaScript-Garden/">JavaScript Garden</a></li>
<li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript">JavaScript on MDN</a></li>
<li><a href="https://www.youtube.com/watch?v=MihuqHhnFVo">JavaScript the Weird Parts</a></li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-9">
<section class="slide-content"><h1 id="how-to-make-it-stick">How to make it stick</h1>
<ul>
<li>Don't just read it, try it out as you read it</li>
<li>If you forget it, try writing some code to verify it</li>
<li>write code</li>
<li>read other people's code</li>
<li>modify other people's code</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-10">
<section class="slide-content"><h1 id="repl-uses">REPL uses</h1>
<ul>
<li>validate understanding</li>
<li>explore objects</li>
<li>experiment</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-11">
<section class="slide-content"><h1 id="repl-tips">REPL tips</h1>
<ul>
<li>be careful, browser dev tools will eat "var a = ...", use "a = ..."</li>
<li>hit shift-enter to type multiple lines of code</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-12">
<section class="slide-content"><h1 id="example-value-of-this-">Example (value of "this")</h1>
<ul>
<li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this">MDN this</a></li>
<li><a href="https://bonsaiden.github.io/JavaScript-Garden/#function.this">How "this" works (JavaScript Garden)</a></li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-13">
<section class="slide-content"><h1 id="simplifying-mental-models">Simplifying Mental Models</h1>
<ul>
<li>long blog post enumerate every single way in which "this" can be used (bad)</li>
<li>bounds vs. unbound (good)</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-14">
<section class="slide-content"><h1 id="bound-vs-unbound">Bound vs. unbound</h1>
<ul>
<li>new -> bound</li>
<li>calling a method via dot syntax -> bound</li>
<li>binding a "this" object via .bind -> bound</li>
<li>using .call or .apply with a "this" object -> bound</li>
</ul>
<p>Everything else is unbound and "this" will be window (or global in node.js)</p>
</section>
</div>
<div class="slide hidden" id="slide-15">
<section class="slide-content"><h1 id="example-bind-call-apply">Example: bind, call, apply</h1>
<ul>
<li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind">bind</a></li>
<li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call">call</a></li>
<li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply">apply</a></li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-16">
<section class="slide-content"><h1 id="closure">Closure</h1>
<pre><code>for (var i = 0; i < 5; i++) {
button.onclick = function() {
alert("I'm button #" + i);
}
}</code></pre>
<ul>
<li>The onclick handler uses whatever the value of <code>i</code> when the event handler is
called. </li>
<li>When is onclick called? During the <code>for</code> loop or after?</li>
<li>What is the value of <code>i</code> at that point in time?</li>
<li>What does this program do?</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-17">
<section class="slide-content"><h1 id="closure">Closure</h1>
<pre><code>var createHandler = function(i) {
alert("I'm button #" + i);
};
for (var i = 0; i < 5; i++) {
button.onclick = createHandler(i);
}</code></pre>
<p>Why does this make a difference?</p>
</section>
</div>
<div class="slide hidden" id="slide-18">
<section class="slide-content"><h1 id="example-exploring-prototype">Example: exploring prototype</h1>
<p>Let's look at how to add a method to <code>Array</code></p>
<ul>
<li>Object.getPrototype</li>
<li>Object.getOwnPropertyDescriptor</li>
<li>Object.defineProperty</li>
<li><a href="http://ejohn.org/blog/ecmascript-5-objects-and-properties/">ECMAScript 5 Objects and Properties</a></li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-19">
<section class="slide-content"><h1 id="replacing-methods">Replacing methods</h1>
<ul>
<li>polyfills (add mising functionality)</li>
<li>instrumenting</li>
<li>mocking/stubbing when testing</li>
</ul>
</section>
</div>
<div class="slide hidden " id="slide-20">
<section class="slide-content"><h1 id="example-addeventlistener">Example: addEventListener</h1>
<p>instrument a single instance, class, or everythhing</p>
<p>pattern:</p>
<ul>
<li>store the original implementation</li>
<li>create our own method that calls the original and does some other worker</li>
</ul>
<pre><code>Element.prototype.addEventListener = function(type, handler, capture) {
console.log("adding event '" + type + "' to: %o", this);
aEL.call(this, type, handler, capture);
};</code></pre>
</section>
</div>
<div class="slide hidden title" id="slide-21">
<section class="slide-content"><h1 id="tooling">Tooling</h1>
</section>
</div>
<div class="slide hidden" id="slide-22">
<section class="slide-content"><h1 id="tools">Tools</h1>
<ul>
<li>IDE/Editor: WebStorm, Sublime, Atom, emacs, vim, etc.</li>
<li>dependency management: npm, bower, jspm</li>
<li>module loading: requirejs, systemjs</li>
<li>build system: grunt, gulp, browserify, webpack, etc.</li>
<li>Browser Dev Tools: debugging, profiling, etc.</li>
</ul>
</section>
</div>
<div class="slide hidden " id="slide-23">
<section class="slide-content"><h1 id="ide-editor">IDE/Editor</h1>
<ul>
<li>easy navigation</li>
<li>collapsable regions -> structure</li>
<li>refactorings</li>
<li>multiple cursors</li>
<li>keyboard shortcuts</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-24">
<section class="slide-content"><h1 id="protect-yourself">Protect Yourself</h1>
<ul>
<li>lint: jshint (automate it)</li>
<li>write tests, automate tests (travis-ci)</li>
<li>source control: git, hg, svn, etc.</li>
<li>externalize storage: github, bitbucket</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-25">
<section class="slide-content"><h1 id="debugging">Debugging</h1>
<ul>
<li>breakpoints</li>
<li>exceptions</li>
<li>conditional breakpoints</li>
<li><a href="https://developer.chrome.com/devtools"><a href="https://developer.chrome.com/devtools">https://developer.chrome.com/devtools</a></a></li>
<li><a href="http://discover-devtools.codeschool.com/"><a href="http://discover-devtools.codeschool.com/">http://discover-devtools.codeschool.com/</a></a></li>
<li>videos from previous Google I/O on devtools</li>
</ul>
</section>
</div>
<div class="slide hidden title" id="slide-26">
<section class="slide-content"><h1 id="interacting-with-the-community">Interacting with the Community</h1>
</section>
</div>
<div class="slide hidden" id="slide-27">
<section class="slide-content"><h1 id="things-to-do">Things to do</h1>
<ul>
<li>report bugs</li>
<li>verify bugs</li>
<li>suggest features</li>
<li>fix documentation</li>
<li>fix bugs (and write tests)</li>
<li>add features</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-28">
<section class="slide-content"><h1 id="etiquette">Etiquette</h1>
<ul>
<li>assume good faith</li>
<li>observe proper netiquette</li>
<li>try to make your code fit it</li>
<li>don't try to change everything</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-29">
<section class="slide-content"><h1 id="finding-a-project">Finding a Project</h1>
<ul>
<li><a href="https://github.com/gre/glsl.js/pull/12">https://github.com/gre/glsl.js/pull/12</a></li>
<li><a href="https://github.com/WebAudio/web-audio-api/pull/339">https://github.com/WebAudio/web-audio-api/pull/339</a></li>
<li><a href="https://github.com/Khan/live-editor/pull/188/files">https://github.com/Khan/live-editor/pull/188/files</a></li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-30">
<section class="slide-content"><h1 id="starting-a-project">Starting a Project</h1>
<ul>
<li><a href="http://jenniferdewalt.com/">http://jenniferdewalt.com/</a></li>
<li>write some functions to make something easier -> library<ul>
<li>generate random colors - <a href="https://www.npmjs.com/search?q=random+color">npmjs.org search</a></li>
<li>drawing circles and lines using HTML5 Canvas</li>
<li>something to make postMessage look like an EventEmitter - <a href="https://github.com/kevinb7/poster">poster</a></li>
</ul>
</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-31">
<section class="slide-content"><h1 id="finishing-a-project">Finishing a Project</h1>
<ul>
<li>add documentation and example code to README.md</li>
<li>put a live demo on gh-pages (free static hosting)</li>
<li>write a "Show HN" post</li>
</ul>
</section>
</div>
<div class="slide hidden title" id="slide-32">
<section class="slide-content"><h1 id="apis-and-libraries">APIs and Libraries</h1>
</section>
</div>
<div class="slide hidden" id="slide-33">
<section class="slide-content"><h1 id="browser-apis">Browser APIs</h1>
<ul>
<li><a href="http://diveintohtml5.info/">dive into HTML5</a></li>
<li><a href="http://html5please.com/"><a href="http://html5please.com/">http://html5please.com/</a></a></li>
<li>Blobs, BlobURLs, native drag and drop, native notifications, dialog element,
web workers, WebGL, SVG, Canvas, localStorage, audio/video elements,
getUserMedia, TouchEvents, DeviceOrientation, etc.</li>
<li><a href="https://developer.mozilla.org/en-US/">MDN</a></li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-34">
<section class="slide-content"><h1 id="using-the-new-and-shiny">Using the new and shiny</h1>
<ul>
<li><a href="http://caniuse.com/">caniuse.com</a></li>
<li>use polyfills when necessary</li>
</ul>
</section>
</div>
<div class="slide hidden" id="slide-35">
<section class="slide-content"><h1 id="libraries">Libraries</h1>
<ul>
<li>Web Sockets -> <a href="http://socket.io/">socket.io</a></li>
<li>WebRTC -> <a href="http://rtc.io/">rtc.io</a></li>
<li>WebGL -> <a href="http://threejs.org/">THREE.js</a></li>
<li>Web Components -> <a href="https://www.polymer-project.org/">Polymer</a></li>
</ul>
</section>
</div>
<div class="slide hidden title" id="slide-36">
<section class="slide-content"><h1 id="final-words-of-wisdom">Final Words of Wisdom</h1>
</section>
</div>
<div class="slide hidden" id="slide-37">
<section class="slide-content"><h1 id="javascript-masterclass">JavaScript Masterclass</h1>
<iframe width="853" height="480" src="https://www.youtube.com/embed/v0TFmdO4ZP0?rel=0&showinfo=0" frameborder="0" allowfullscreen></iframe></section>
</div>
<div class="slide hidden title" id="slide-38">
<section class="slide-content"><h1 id="questions">Questions</h1>
</section>
</div>
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