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<!doctype html>
<html lang="en">
<head>
<title>FEWD: Class 15</title>
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/general-assembly.css" id="theme">
<link rel="shortcut icon" type="image/x-icon" href="img/favicon.ico" />
<link rel="stylesheet" href="css/zenburn.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.9.0/styles/default.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.9.0/highlight.min.js"></script>
</head>
<body>
<div class="reveal">
<div class="slides">
<section class="hero">
<h1>HELLO</h1>
<div class="opening-instructions">
<p>1) Please download <a href="../materials/class15.zip">Class 15 Starter Code</a></p>
<p>2) Move the following into <code class="code">class-work</code>:</p>
<p class=" pad-left-lg">• <code class="code">click-count</code></p>
<p>3) Soloution to <code class="code">accordion</code> included</p>
</div>
</section>
<section class="hero condensed">
<h1>Class <span class="red">#12</span></h1>
<h1>11/05/2018</h1>
<h1 class="lesson-title">Conditional Statements</h1>
</section>
<!-- ANNOUNCEMENTS -->
<section data-background="#FFF" class="text-left">
<div class="heading">Announcements</div>
<p>• Final Projects:</p>
<div class="pad-left-lg">
<p>⇒ Fourth deliverable due Wednesday, November 14th</p>
<p>⇒ JavaScript/Pseudocode</p>
</div>
<p>• No Class:</p>
<div class="pad-left-lg">
<p>⇒ Monday, 11/11</p>
<p>⇒ Wednesday, 11/21</p>
</div>
</section>
<!-- AGENDA -->
<section data-background="#FFF" class="text-left">
<div class="heading">Agenda</div>
<p>• <a href="#/conditional-statements">Conditional Statements</a></p>
<p>• <a href="#/logical-operators">Logical Operators</a></p>
<p>• <a href="#/manipulating-css">Manipulating CSS Classes</a></p>
</section>
<!-- WARMUP -->
<section class="center">
<h1><a href="https://codepen.io/cheshireoctopus/pen/mQbPBY" target="_blank">Warmup</a></h1>
</section>
<section class="title" id="conditional-statements">
<h1>Conditional Statements</h1>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements</div>
<p>• Control Flow:</p>
<div class="pad-left-lg">
<p>⇒ Order the CPU runs a program's statements</p>
<p>⇒ Decides which code is running at a given time</p>
</div>
<p class="fragment">• So far, our code has flowed <u>sequentially</u></p>
<p class="fragment">• We can alter this flow using <u>conditional logic</u></p>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements</div>
<div class="text-smaller">
<p>• Sequential Control Flow:</p>
<div class="pad-left-lg">
<p>⇒ Programs execute line by line, from top to bottom</p>
</div>
<div class="text-center">
<img src="img/class15/sequential-flow.png">
</div>
</div>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements</div>
<p>• Sequential Control Flow Example:</p>
<pre><code class="code">
function sayHello() {
var name = $('input').val()
var greeting = 'Hello, ' + name + '!'
$('#output').text(greeting)
}
</code></pre>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements</div>
<p>• Programs can flow in other ways:</p>
<div class="text-center">
<img src="img/class15/control-flows.jpg">
</div>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements</div>
<p>• Conditonal Flow:</p>
<div class="pad-left-lg">
<p>⇒ AKA <b>if/else</b> statements</p>
<p>⇒ Alters flow when a decision must be made</p>
<p>⇒ Choice is based on variables in the program</p>
</div>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements</div>
<p>• If/Else Flow:</p>
<div class="text-center">
<img src="img/class15/conditional-flow.jpg">
</div>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements</div>
<p>• Sequential vs. Conditional Flows:</p>
<div class="text-center">
<img src="img/class15/sequential-vs-conditional-flow.png" alt="">
</div>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements</div>
<div class="text-smallest">
<pre><code class="code">
var x = 10
if (x > 5) {
alert('x is larger than 5!')
} else {
alert('x is smaller than 5!')
}
</code></pre>
<p class="fragment">• Denoted by the <code class="code">if</code> and <code class="code">else</code> keywords</p>
<p class="fragment">• Begins with a <u>condition</u>: <code class="code">(x > 5)</code></p>
<p class="fragment">• If the condition is <b>true</b>, the statment(s) in the "if block" will run</p>
<p class="fragment">• If the condition is <b>false</b>, the statment(s) in the "else block" will run</p>
</div>
</section>
<section class="title" id="logical-operators">
<h1>Logical Operators</h1>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements: Logical Operators</div>
<p><code class="code" style="margin-right: 30px">===</code> equal to</p>
<p><code class="code" style="margin-right: 30px">!==</code> not equal to</p>
<p><code class="code" style="margin-right: 30px">></code> greater than</p>
<p><code class="code" style="margin-right: 30px"><</code> less than</p>
<p><code class="code" style="margin-right: 30px">>=</code> greater than or equal to</p>
<p><code class="code" style="margin-right: 30px"><=</code> less than or equal to</p>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements: Logical Operators</div>
<div class="text-smallest">
<pre><code>
var x = 10
if (x === 10) {
alert('bananas')
} else {
alert('apples')
}
</code></pre>
<div class="fragment">
<hr>
<pre><code>
var x = 'cat'
if (x !== 5) {
alert('tacos')
} else {
alert('salads')
}
</code></pre>
</div>
</div>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements: Logical Operators</div>
<div class="text-smallest">
<pre><code>
var x = 10
if (x >= 10) {
alert('oranges')
} else {
alert('strawberrys')
}
</code></pre>
<div class="fragment">
<hr>
<pre><code>
var x = 10
if (x <= 10) {
alert('kiwis')
} else {
alert('olives')
}
</code></pre>
</div>
</div>
</section>
<section class="center">
<h1><a target="_blank" href="https://repl.it/@cheshireoctopus/FEWD-Conditional-Statements-Logical-Operators">CodeAlong</a></h1>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Conditional Statements: Multiple Conditions</div>
<p class="text-smaller">• Programs can evaluate more than one condition</p>
<p class="text-smaller">• Use the <code class="code">else if</code> operator to handle:</p>
<pre><code>
var x = 10
if (x !== 10) {
alert('beer')
} else if (x === 10) {
alert('coffee')
} else {
alert('water')
}
</code></pre>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Exercise: Click Count</div>
<div class="text-left">
<p>1. Open <code class="code">click-count</code> in Sublime Text</p>
<p>2. Follow the instructions in <code class="code">js/app.js</code></p>
<p>3. Use <code class="code">if</code>, <code class="code">else if</code>, <code class="code">else</code> structure</p>
</div>
</section>
<!-- BREAK (5-7 mins) -->
<section class="center">
<h1>5 minute break</h1>
<img src="img/main/break-time-bear.jpg">
</section>
<section class="title" id="manipulating-css">
<h1>Manipulating CSS Classes</h1>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Manipulating CSS Classes</div>
<div class="text-smallest">
<p><code class="code">.addClass('class-name')</code></p>
<p class="text-smallest pad-left-lg">⇒ Adds classes to elements</p>
<pre><code>
$('p').addClass('bold-text')
// would yield: <p class="bold-text"></p>
</code></pre>
<div class="fragment">
<p><code class="code">.removeClass('class-name')</code></p>
<p class="text-smallest pad-left-lg">⇒ Removes classes from elements</p>
<pre><code>
$('p').removeClass('bold-text')
</code></pre>
</div>
</div>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Manipulatin CSS Classes</div>
<div class="text-smallest">
<p><code class="code">.toggleClass('class-name')</code></p>
<p class="text-smaller pad-left-lg">⇒ Adds class to elements if it does not exist; otherwise removes</p>
<div class="fragment">
<p class="text-smaller">• Assuming the following HTML:</p>
<pre><code>
<p>Some Paragraph</p>
</code></pre>
<pre><code>
$('p').toggleClass('bold-text')
// would yield: <p class="bold-text"></p>
</code></pre>
</div>
</div>
</section>
<section data-background="#FFF" class="text-left">
<div class="heading">Exercise: Light Switch</div>
<div class="text-left">
<p>1. Open <code class="code">light-switch</code> in Sublime Text</p>
<p>2. Follow the instructions in <code class="code">js/app.js</code></p>
</div>
</section>
<!-- THE END -->
<section class="center">
<img src="img/main/the-end.jpg">
</section>
<!-- ON DECK -->
<section data-background="#FFF" class="text-left">
<div class="heading">On Deck: #16 - Function Arguments</div>
<p>• Function Arguments</p>
<p>• HTML Insertion/Removal</p>
</section>
<section class="center">
<h1>Exit Tickets!</h1>
</section>
</div>
</div>
<script src="js/head.min.js"></script>
<script src="js/reveal.min.js"></script>
<script src="js/main.js"></script>
</body>
</html>