How to add or attach "click" event listener in DOM?

Question 1

How to add or attach "click" event listener in DOM?

javascript google-chrome mobile-webkit

Ashish Agarwal · Mar 20, 2011 · Viewed 10.6k times · Source

Answer

Answer

Using addEventListener (or IE's attachEvent) doesn't change the contents of the onclick attribute - they're independent.
There shouldn't be any need to time delay the loaded() function - just do:

window.addEventListener('load', loaded, false);
If you're assuming W3C DOM event handling (which your load handler does) then there's no need for the IE-ony attachEvent() call

Question 2

Am not able to add events to a id. Though able to attach event listener onLoad but same not working for onClick or click. Can somebody help me to fix it?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"><html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" id="iphone-viewport" content="minimum-scale=1.0, maximum-scale=1.0, width=device-width">
    <title>Astro Wheel</title>
<script type="text/javascript">

function loaded() {
alert("Loaded")
var ele= document.getElementById("aries");
if (window.attachEvent) 
{ ele.attachEvent('click', testFunction); }
else if (window.addEventListener)
 { ele.addEventListener('click', testFunction, true); }
 // I am unable to register a event on #aries, below alerts giving "null" and "undefined" respectively
 alert(ele.onclick);
 alert(ele.click)

}

function testFunction(){
alert("Clicked")
}
window.addEventListener("load", function() { setTimeout(loaded, 100); }, true);
</script>
<style type="text/css">
body, ul, li, div, p { padding:0; margin:0; }
body { background:#444 url(bg.png); }
#wheel { position:absolute; z-index:1; width:320px; height:321px; overflow:hidden; }
#display1 { position:absolute; z-index:100; width:320px; height:321px;  }
ul { position:absolute; z-index:10; width:320px; height:320px;
    -webkit-transform-origin:50% 50%;
    -webkit-transform:rotateZ(0rad);
    text-align:center;
}
ul li { position:absolute; z-index:11; width:76px; height:88px; left:122px; top:22px; overflow:hidden;
    -webkit-transform-origin:38px 138px;
    -webkit-transition-timing-function:ease-out;
    -webkit-transition-duration:800ms;
}
#aries {-webkit-transform:rotate(0deg) translate(0, -0px); }
#cancer {-webkit-transform:rotate(90deg) translate(0, -000px); }
#libra {-webkit-transform:rotate(180deg) translate(0, -0000px); }
#caprico { -webkit-transform:rotate(270deg) translate(0, -000px); }

</style>
</head>
<body>
<div id="wheel">
    <div id="display1"></div>
    <ul id="zodiac">
        <li id="aries"><div>Aries</div></li>
        <li id="cancer"><div>Cancer</div></li>
        <li id="libra"><div>Libra</div></li>
        <li id="caprico"><div>Caprico</div></li>
    </ul>
    <div id="ok"></div>
</div>
</body>
</html>

P.S. I am not allowed to use any framework.Testing on WEBKIT based mobile browser and Google Chrome only

How to add or attach "click" event listener in DOM?

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