Update HTML within a Div using document.getElementsByClassName

Hello,

We are attempting to update HTML within a div tag using .getElementsByClassName on pageload.

For example:

<div class="description ng-scope">
<p>Don't ask me.</p>
<p>I have no idea what it does.....</p>
</div>

Updated to:

<div class="description ng-scope">
<p>updated</p>
</div.

We have attempted to use:
<script>
document.getElementsByClassName("ng-scope").innerHTML = "<p>updated</p>";
</script>

But it doesnt seem to work just wondering whats wrong with my syntax. Note we cant use jQuery.

Thanks
PlumInternetAsked:
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Ronak PatelCommented:
Hi PlumInternet,

The "document.getElementsByClassName()" will return an array of the elements having the "ng-scope" class.

You have to select specific index to replace the inner HTML.

Please refer below example for more understanding:
<!DOCTYPE html>
<head>
<title></title>
<script type="text/javascript">

	function updateDiv()
	{
		//debugger;
		document.getElementsByClassName("ng-scope")[0].innerHTML = "<p>updated</p>";
	}

</script>
</head>
<body>

<div class="description ng-scope">
	<p>Don't ask me.</p>
	<p>I have no idea what it does.....</p>
</div>
<br />
<div class="description ng-scope">
	<p>ask me.</p>
	<p>I have no idea what it does.....</p>
</div>

<input id="btnUpdate" type="button" value="update" onclick="updateDiv();" />

</body>
</html>

Open in new window


In above example, there are 2 div with "ng-scope" css class, but I'm only replacing the Inner HTML of 1st div.


Hope this helps.

Regards,
Ronak
0

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PlumInternetAuthor Commented:
Brilliant. Has solved the problem. Thanks for your help.
0
Ronak PatelCommented:
Hi PlumInternet,

If my answer helped you in resolving your problem, please mark it as an accepted answer ! :)


Regards,
Ronak
0
PlumInternetAuthor Commented:
Doh, I thought I did. Sorry.
0
Ronak PatelCommented:
Its okay, no worries :)
0
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