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Asked: 2026-05-15T17:13:04+00:00

When I put any sort of doctype declaration like <!DOCTYPE html > , appendChild

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When I put any sort of doctype declaration like <!DOCTYPE html >, appendChild does not work…. Why?

<form>
<script language="javascript">
    function function2() {
        var myElement = document.createElement('<div style="width:600; height:200;background-color:blue;">www.java2s.com</div>');
        document.forms[0].appendChild(myElement);
    } 
</script>


<button onclick="function2();"></button>

</form>

I’m trying to get data from a popup window’s parent opener…is that possible? The data can be a string literal or value tied to the DOM using jQuery .data()

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1 Answer

  1. Editorial Team

    If you’re having this problem in IE, it’s probably because the presence of a DOCTYPE declaration forces the browser into “standards-compliance” mode. This can cause code that doesn’t conform to expected standards to break.

    In your case, it’s probably because document.createElement doesn’t accept an HTML fragment – it accepts an element name, e.g. document.createElement('div').

    Try replacing your function body with something like this:

    var myElement = document.createElement('div');
myElement.style.width = '600px';
myElement.style.height = '200px';
myElement.style.backgroundColor = 'blue';
myElement.appendChild(document.createTextNode('www.java2s.com'));
document.forms[0].appendChild(myElement);

    Read up on the document object model here: https://developer.mozilla.org/en/DOM

    Also, jQuery is good for easily creating elements using the syntax you specified.

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