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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Class 4 ~ JavaScript/jQuery ~ Girl Develop It</title>
<meta name="description" content="This is the official Girl Develop It Core Intro JavaScript course. Material based on original material by Sara Chipps, Pamela Fox, Alexis Goldstein, Izzy Johnston and Leo Newball.
The course is meant to be taught in 4 two-hour sections. Each of the slides and practice files are customizable according to the needs of a given class or audience.">
<meta name="author" content="Girl Develop It">
<meta name="apple-mobile-web-app-capable" content="yes" />
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<link rel="stylesheet" href="css/class.css">
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</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<!-- Opening slide -->
<section>
<img src="images/gdi_logo_badge.png" alt="Girl Develop It" style="box-shadow: none;" width="200" height="200">
<h2>Introduction to JavaScript and jQuery</h2>
<h4>Class 4</h4>
</section>
<!-- Welcome-->
<section>
<h3>Welcome!</h3>
<div class="left-align">
<p>Girl Develop It is here to provide affordable and accessible programs to learn software through mentorship and hands-on instruction.</p>
<p class="green">Some "rules"</p>
<ul>
<li>We are here for you!</li>
<li>Every question is important</li>
<li>Help each other</li>
<li>Have fun</li>
</ul>
</div>
</section>
<section>
<h3>Warning</h3>
<div style ="font-size=1.2em" class="yellow">
The following few slides have lots of acronyms and jargon.
</div>
<div>On behalf of developers everywhere, we apologize</div>
</section>
<!-- What is an API-->
<section>
<h3>What is an API?</h3>
<ul>
<li class="fragment"><span class="yellow">A</span>pplication <span class="yellow">P</span>rogramming <span class="yellow">I</span>nterface</li>
<li class="fragment">Data structure and rules for accessing a web-based application</li>
<li class="fragment">How we can access information from sites that are not our own (Twitter, Meetup, Facebook, Foursquare)</li>
</ul>
</section>
<section>
<h3>What is an API?</h3>
<ul>
<li class="fragment">Primary role: a channel for applications to work together
<ul>
<li class="fragment">Your website and the Twitter API</li>
<li class="fragment">Twitter's mobile app and the Twitter API</li>
<li class="fragment">Hootsuite's mobile app and the Twitter API</li>
</li>
</ul>
</section>
<!-- What is AJAX-->
<section>
<h3>What is AJAX?</h3>
<ul>
<li class="fragment"><span class="yellow">A</span>synchronous <span class="yellow">J</span>avaScript <span class="yellow">a</span>nd <span class="yellow">X</span>ML</li>
<li class="fragment">Method to communicate to a server or API</li>
<li class="fragment">Asynchronous means:
<ul>
<li class="fragment">I ask Twitter for all the tweets ever!</li>
<li class="fragment">That will take a while</li>
<li class="fragment">My <span class="green">whole website</span> could be <span class="green">locked up</span> while I wait!</li>
<li class="fragment">Or, my call can be <span class="blue">'asynchronous'</span> and my website will just <span class="blue">listen for Twitter's response</span> with one ear, but go about <span class="blue">normal business until the response arrives</span>.
</ul>
</li>
<li class="fragment">Requests and results can be in JavaScript or XML</li>
</ul>
</section>
<!-- What is REST-->
<section>
<h3>What is REST?</h3>
<ul>
<li class="fragment"><span class="yellow">Re</span>presentational <span class="yellow">S</span>tate <span class="yellow">T</span>ransfer</li>
<li class="fragment">REST is a way to ask an API for information by using a URL.</li>
<li class="fragment">REST Urls are created with the following syntax:
<ul>
<li class="fragment">http://ApiSite.com/method?parameter=value&parameter=value</li>
<li class="fragment"><span class="blue">Method</span>—what you want from the API. Defined by API documentations</li>
<li class="fragment"><span class="blue">Parameter</span>—a type of filter or restraint. Defined by API documentations</li>
<li class="fragment"><span class="blue">Value</span>—value for parameter. Defined by you!</li>
</ul>
</li>
</ul>
</section>
<section>
<h3>Where do I learn about an API?</h3>
<p>All (good) APIs have documentation</p>
<ul>
<li>Facebook (<a href = "https://developers.facebook.com/" target = "_blank">https://developers.facebook.com/</a>)</li>
<li>Twitter (<a href = "https://dev.twitter.com/" target = "_blank">https://dev.twitter.com/</a>)</li>
<li>Meetup (<a href = "http://www.meetup.com/meetup_api/" target = "_blank">http://www.meetup.com/meetup_api/</a>)</li>
<li>FourSquare (<a href = "https://developer.foursquare.com/">https://developer.foursquare.com/</a>)</li>
</section>
<!-- What is JSON-->
<section>
<h3>What is JSON?</h3>
<ul>
<li class="fragment"><span class="yellow">J</span>ava<span class="yellow">S</span>cript <span class="yellow">O</span>bject <span class="yellow">N</span>otation</li>
<li class="fragment">Format for data returned from APIs</li>
<li class="fragment">You've seen it before!</li>
<li class="fragment">JavaScript objects</li>
</ul>
</section>
<!-- Getting started!-->
<section>
<h3>Getting started!</h3>
<p>Get an API Key</p>
<p class="fragment green">A what?</p>
<ul>
<li class="fragment">Api Key or Developer Key is a way for an API to identify you</li>
<li class="fragment">More secure for an API (Know who is using their API)</li>
<li class="fragment">More secure for you—people can't pretend to be your website</li>
</ul>
</section>
<!-- Meetup-->
<section>
<h3>Meetup API</h3>
<p>We will be using the Meetup API</p>
<p><a href = "http://www.meetup.com/meetup_api/" target = "_blank">Documentation</a></p>
<img src = "images/meetup.png" />
</section>
<section>
<h3>Meetup API</h3>
<p>We will be finding interesting Meetups near us</p>
<p><a href = "http://www.meetup.com/meetup_api/docs/2/open_events/" target = "_blank">Open Events</a></p>
<img src = "images/meetup_open.png"/>
</section>
<section>
<h3>Meetup API</h3>
<p>Try it in the meetup console</p>
<p><a href = "http://www.meetup.com/meetup_api/console/?path=/2/open_events" target = "_blank">Open Events Console</a></p>
<img src = "images/meetup_console.png"/>
</section>
<section>
<h3>Meetup API</h3>
<p>Try it in the meetup console</p>
<img src = "images/meetup_results.png"/>
</section>
<!-- jQuery Ajax-->
<section>
<h3>jQuery Ajax</h3>
<p>jQuery method to perform an AJAX call</p>
<div class="fragment">
<pre><code contenteditable class="javascript">
$.ajax({
url: 'http://site.com',
data: {
parameter: 'value',
parameter: 'value'
},
crossDomain: true,
dataType: 'jsonp',
type: "GET",
success: function (data) {
// code with data returned
},
error: function(data) {
// code with error returned
}
});
</code></pre>
</div>
<aside class="notes">
<p>We break this down in the next slides</p>
</aside>
</section>
<section>
<h3>jQuery Ajax</h3>
<div class="fragment">
<pre><code contenteditable class="javascript">
$.ajax({
url: 'http://site.com',
...
});
</code></pre>
</div>
<ul>
<li class="fragment"> $.ajax()—jQuery method for sending AJAX requests</li>
<li class="fragment">Takes one parameter—a JavaScript object</li>
<li class="fragment">Note the {}</li>
<li class="fragment"><span class="blue">url</span>—first property, the url where you will send the AJAX request</li>
</ul>
</section>
<section>
<h3>jQuery Ajax</h3>
<div class="fragment">
<pre><code contenteditable class="javascript">
...
data: {
parameter: 'value',
parameter: 'value'
},
...
</code></pre>
</div>
<ul>
<li class="fragment"><span class="blue">data</span>— a JavaScript object with all the parameters for the AJAX request</li>
<li class="fragment">Some parameters in the <a href = "http://www.meetup.com/meetup_api/docs/2/open_events/" target = "_blank">Meetup open events</a>
<ul>
<li>key (refers to api key)</li>
<li>city</li>
<li>country</li>
<li>topic</li>
</ul>
</li>
</ul>
</section>
<section>
<h3>jQuery Ajax</h3>
<div class="fragment">
<pre><code contenteditable class="javascript">
...
crossDomain: true,
dataType: 'jsonp',
type: "GET",
...
</code></pre>
</div>
<ul>
<li class="fragment"><span class="blue">crossDomain</span>—are you sending the request to a domain that is not your own?</li>
<li class="fragment"><span class="blue">dataType</span>—how will you evaluate the data returned</li>
<li class="fragment"><span class="blue">type</span>—what type of request is it?
<ul>
<li>GET—retrieve data</li>
<li>POST—post new data</li>
</ul>
</li>
</ul>
<aside class="notes">
<p>json vs. jsonp (JSON with padding): boils down to a way to safely request data from an external domain by wrapping in a function</p>
</aside>
</section>
<section>
<h3>jQuery Ajax</h3>
<div class="fragment">
<pre><code contenteditable class="javascript">
...
success: function (data) {
// code with data returned
},
error: function(data) {
// code with error returned
}
...
</code></pre>
</div>
<ul>
<li class="fragment"><span class="blue">success</span>—code that will execute if results are sent back successfully</li>
<li class="fragment"><span class="blue">error</span>—code that will execute if results return an error</li>
</ul>
</section>
<!-- Exercise-->
<section>
<h3>Let's Develop It!</h3>
<ul>
<li>Create a new div with the id "events"</li>
<li>Create a new function in your JavaScript that calls <a href = "http://www.meetup.com/meetup_api/docs/2/open_events/" target = "_blank">Meetup open events</a> method</li>
<li>Add parameters such as city; state; or lat, lon to find Meetups near you</li>
<li>Add a parameter such as category or topic to find Meetups that you would be interested in</li>
<li>For now, just look at the results in the console.log()</li>
<li>Call this new function at document ready</li>
</ul>
</section>
<section>
<h3>Let's Develop It!</h3>
<img src = "images/console.png"/>
</section>
<section>
<h3>Let's Develop It!</h3>
<ul>
<li>Create a new function that can parse results.</li>
<li>Remember that the results will be an array of objects</li>
<li>Loop through your results</li>
<li>For each result, create a new div</li>
<li>Get the name, description, group name, and url of each event</li>
<li>Append them to your new div</li>
<li>Append the new div to the div "events"</li>
</ul>
</section>
<section>
<h3>Let's Develop It!</h3>
<ul>
<li>Create a form for users to enter in their location and a topic of their choosing</li>
<li>On submit, call the same Meetup open events method, but with the user's values</li>
</ul>
</section>
<section>
<h3>Bonus</h3>
<p class="blue">Still have time? Can't stop learning?</p>
<div class="left-align">
<p>One of the best things about jQuery is the developer community</p>
<p>They love to build!</p>
<p>Check out some great plugins:</p>
<ul>
<li><a href = "http://jqueryui.com/" target = "_blank">jQuery UI</a>—accordions, drag and drop, resize, sort</li>
<li><a href = "http://leandrovieira.com/projects/jquery/lightbox/" target = "_blank">jQuery Lightbox</a>—Pop up gallery of images!</li>
<li><a href = "http://www.jqueryplugins.com/" target = "_blank">And so many more!</a></li>
</ul>
</div>
</section>
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<section>
<h2>Questions?</h2>
<div style = "font-size:1200%; height:100%; margin-top:20%" class="blue">?
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</section>
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Introduction to JavaScript/jQuery -- Girl Develop It Burlington --
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