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<!DOCTYPE html>
<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
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<meta name="author" content="Matt Makai">
<meta name="description" content="Full Stack Python explains each layer of the web application stack, from the server up through the rendering in a user's browser.">
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</div> <div class="row">
<div class="col-md-8">
<h1>JavaScript</h1>
<p>JavaScript is a small scripting programming language embedded in web browsers
to enable dynamic content and interaction. </p>
<h2>Why is JavaScript necessary?</h2>
<p>JavaScript executes in the client and enables dynamic content and interaction
that is not possible with HTML and CSS alone. Every modern Python web
application uses JavaScript on the front end. </p>
<h2>Front end frameworks</h2>
<p>Front end JavaScript frameworks move the rendering for most of a web
application to the client side. Often these applications are informally
referred to as "one page apps" because the webpage is not reloaded upon every
click to a new URL. Instead, partial HTML pages are loaded into the
document object model or data is retrieved through an API call then displayed
on the existing page.</p>
<p>Examples of these front end frameworks include:</p>
<ul>
<li>
<p><a href="https://angularjs.org/">Angular.js</a></p>
</li>
<li>
<p><a href="http://backbonejs.org/">Backbone.js</a></p>
</li>
<li>
<p><a href="http://emberjs.com/">Ember.js</a></p>
</li>
</ul>
<p>Front end frameworks are rapidly evolving. Over the next several years
consensus about good practices for using the frameworks will emerge.</p>
<h2>How did JavaScript originate?</h2>
<p>JavaScript is an implementation of
<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/JavaScript_Overview">the ECMAScript specification</a>
which is defined by the
<a href="http://www.ecma-international.org/default.htm">Ecma International Standards Body</a>.</p>
<h2>JavaScript resources</h2>
<ul>
<li>
<p><a href="http://www.html5rocks.com/en/tutorials/internals/howbrowserswork/">How Browsers Work</a>
is a great overview of both JavaScript and CSS as well as how pages are
rendered in a browser.</p>
</li>
<li>
<p><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript">A re-introduction to JavaScript</a>
by Mozilla walks through the basic syntax and operators.</p>
</li>
<li>
<p><a href="http://www.smashingmagazine.com/2011/10/28/useful-coding-workflow-tools-for-web-designers-developers/">Coding tools and JavaScript libraries</a>
is a huge list by Smashing Magazine with explanations for each tool and
library for working with JavaScript.</p>
</li>
<li>
<p><a href="http://superherojs.com/">Superhero.js</a> is an incredibly well designed list
of resources for how to test, organize, understand and generally work with
JavaScript.</p>
</li>
<li>
<p><a href="http://www.unheap.com/">Unheap</a> is an amazing collection of reusable JQuery
plugins for everything from navigation to displaying media.</p>
</li>
<li>
<p><a href="http://www.breck-mckye.com/blog/2014/12/the-state-of-javascript-in-2015/">The State of JavaScript in 2015</a>
is an opinion piece about favoring small, single-purpose JavaScript libraries
over larger frameworks due to churn in the ecosystem.</p>
</li>
</ul>
<h2>JavaScript learning checklist</h2>
<p><i class="fa fa-check-square-o"></i>
Create a simple HTML file with basic elements in it. Use the
<code>python -m SimpleHTTPServer</code> command to serve it up. Create a
<code><script type="text/javascript"></script></code>
element at the end of the <code><body></code> section in the HTML page. Start playing
with JavaScript within that element to learn the basic syntax.</p>
<p><i class="fa fa-check-square-o"></i>
Download <a href="http://jquery.com/">JQuery</a> and add it to the page above your
JavaScript element. Start working with JQuery and learning how it makes basic
JavaScript easier.</p>
<p><i class="fa fa-check-square-o"></i>
Work with JavaScript on the page. Incorporate examples from open source
projects listed below as well as JQuery plugins. Check out the Unheap link
below to find a large collection of categorized JQuery plugins.</p>
<p><i class="fa fa-check-square-o"></i>
Check out the JavaScript resources below to learn more about advanced concepts
and open source libraries.</p>
<p><i class="fa fa-check-square-o"></i>
Integrate JavaScript into your web application and check the
<a href="/static-content.html">static content</a> section for how to host the JavaScript
files.</p>
<h3>Do you need to style your app or deploy it next?</h3>
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</div>
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<a href="/source-control.html" class="btn btn-success btn-full"><i class="fa fa-code-fork fa-inverse fa-2x"></i></a>
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How do I save and version my code so it does not get lost?
</p>
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</div>
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<a href="/application-programming-intefaces.html" class="btn btn-success btn-full"><i class="fa fa-exchange fa-2x"></i></a>
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What are web application programming interfaces?
</p>
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<div class="panel-heading"><h3 class="panel-head">JavaScript</h3></div>
<div class="panel-body">
<a href="/">Full Stack Python</a> is an open book that explains
each Python web application stack layer and provides the
best web resources for those topics.
<hr/>
There's a work-in-progress
<a href="/full-stack-python-map.pdf">subjects map (.pdf)</a>
that visually lays out each chapter in addition to the table of
contents found below.
<hr/>
Need more detailed tutorials and walkthroughs than what is
presented here?
<a href="/email.html">Sign up for an email alert when that content is created.</a>
<hr/>
<a href="http://twitter.com/mattmakai">Matt Makai</a> built
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you can <a href="https://github.com/makaimc">follow Matt</a>
to see the daily changes.
</div>
</div>
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<div class="panel-heading">
<h3 class="panel-head">Table of Contents</h3>
</div>
<div class="list-group">
<a href="/introduction.html" class="list-group-item smaller-item ">Introduction</a>
<a href="/web-frameworks.html" class="list-group-item smaller-item ">Web Frameworks</a>
<a href="/django.html" class="list-group-item smaller-item ">Django</a>
<a href="/flask.html" class="list-group-item smaller-item ">Flask</a>
<a href="/bottle.html" class="list-group-item smaller-item ">Bottle</a>
<a href="/morepath.html" class="list-group-item smaller-item ">Morepath</a>
<a href="/other-web-frameworks.html" class="list-group-item smaller-item ">Other Web Frameworks</a>
<a href="/deployment.html" class="list-group-item smaller-item ">Deployment</a>
<a href="/servers.html" class="list-group-item smaller-item ">Servers</a>
<a href="/platform-as-a-service.html" class="list-group-item smaller-item ">Platform-as-a-service</a>
<a href="/operating-systems.html" class="list-group-item smaller-item ">Operating Systems</a>
<a href="/web-servers.html" class="list-group-item smaller-item ">Web Servers</a>
<a href="/wsgi-servers.html" class="list-group-item smaller-item ">WSGI Servers</a>
<a href="/source-control.html" class="list-group-item smaller-item ">Source Control</a>
<a href="/application-dependencies.html" class="list-group-item smaller-item ">Application Dependencies</a>
<a href="/databases.html" class="list-group-item smaller-item ">Databases</a>
<a href="/no-sql-datastore.html" class="list-group-item smaller-item ">NoSQL Data Stores</a>
<a href="/web-design.html" class="list-group-item smaller-item ">Web Design</a>
<a href="/cascading-style-sheets.html" class="list-group-item smaller-item ">Cascading Style Sheets</a>
<a href="/javascript.html" class="list-group-item smaller-item active">JavaScript</a>
<a href="/continuous-integration.html" class="list-group-item smaller-item ">Continuous Integration</a>
<a href="/code-metrics.html" class="list-group-item smaller-item ">Code Metrics</a>
<a href="/configuration-management.html" class="list-group-item smaller-item ">Configuration Management</a>
<a href="/static-content.html" class="list-group-item smaller-item ">Static Content</a>
<a href="/caching.html" class="list-group-item smaller-item ">Caching</a>
<a href="/task-queues.html" class="list-group-item smaller-item ">Task Queues</a>
<a href="/application-programming-interfaces.html" class="list-group-item smaller-item ">Application Programming Interfaces</a>
<a href="/api-integration.html" class="list-group-item smaller-item ">API Integration</a>
<a href="/api-creation.html" class="list-group-item smaller-item ">API Creation</a>
<a href="/logging.html" class="list-group-item smaller-item ">Logging</a>
<a href="/monitoring.html" class="list-group-item smaller-item ">Monitoring</a>
<a href="/web-analytics.html" class="list-group-item smaller-item ">Web Analytics</a>
<a href="/web-application-security.html" class="list-group-item smaller-item ">Web Application Security</a>
<a href="/best-python-resources.html" class="list-group-item smaller-item ">Best Python Resources</a>
<a href="/development-environments.html" class="list-group-item smaller-item ">Development Environments</a>
<a href="/about-author.html" class="list-group-item smaller-item ">About the Author</a>
<a href="/change-log.html" class="list-group-item smaller-item ">Change Log</a>
<a href="/future-directions.html" class="list-group-item smaller-item ">Future Directions</a>
<a href="/what-full-stack-means.html" class="list-group-item smaller-item ">What "Full Stack" Means</a>
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