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POUsing JavaScript to "animate" my webpage
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  1. POUsing JavaScript to "animate" my webpage
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    copied!<p>I thought I'd write a simple script to animate my webpage a little.</p> <p>The basic idea was to make a div grow bigger, when I push a button once and then shrink to it's original size, when I push it again. I handled the growing part well, but I can't get it to shrink again.</p> <p>I'm including a complete example, could you help me fix it?</p> <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt; &lt;title&gt;Test&lt;/title&gt; &lt;meta http-equiv="Content-Language" content="Estonian" /&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-15" /&gt; &lt;/head&gt; &lt;body&gt; &lt;script type="text/javascript"&gt; var i; var increasing = new Boolean("true"); var height; function testFunction() { height = parseInt(document.getElementById("testDiv").offsetHeight); if( increasing == true ) { i = height + 4; document.getElementById("testDiv").style.height = i + "px"; if( height &gt;= 304 ) { increasing = false; } else { pause(30); } } else { i = height - 4; document.getElementById("testDiv").style.height = i + "px"; if( height &lt;= 104 ) { increasing = true; } else { pause(30); } } } function pause(ms) { setTimeout("testFunction()", ms); } &lt;/script&gt; &lt;button id="button" type="button" onclick="testFunction();"&gt;Do it!&lt;/button. &lt;div id="testDiv" style="border: 2px solid black; width: 400px; height: 100px; text-align: center;"&gt; Hello! &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
 

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