Question

192

getElementById and null - why?

rated 0 times [ 194] [ 2] / answers: 1 / hits: 15648 / 13 Years ago, sat, january 14, 2012, 12:00:00

Why doesn't this code work? I'am using FF.

<head>

<script type=text/javascript>



document.getElementById(someID).onclick = function(){

    alert(Yahooo);

}

</script> 

</head>



<body> 

<a href=# id=someID>someID</a>

</body>



</html>

I'm getting javascript error getElementById equals to null.

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stephonkeandrer

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answered 13 Years ago sylviakaitlinj · Accepted Answer

The needed DOM is not loaded when the script is executed. Either move it down (below the href) or define it like this:

window.onload = function () {

    document.getElementById(someID).onclick = function(){

        alert(Yahooo);

    }

}

window.onload will be called when the page is completely loaded.