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Using appendChild with IE in Javascript

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南笙
南笙 2020-12-20 15:42

I am having trouble with this code in IE (with Chrome it seems to work fine):
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2条回答
  • 伪装坚强ぢ
    2020-12-20 16:00

    As you can see here appendChild() in IE is not applied to <script>-elements. (Seems as if IE9 supports it, but it depends on the browser-mode)

    There was an correct answer before by Nivas, unfortunately it has been deleted. In IE use 

    _js.text = scriptContent;
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  • 时光说笑
    2020-12-20 16:12

    Your script is being executed before the DOM is ready, so getting the <body> tag is a race condition. I actually get the same error in Chrome 15 and Firefox 8.

    You can see the code works when called after the page is loaded, for example in a function

    HTML

    <a href="#" onclick="return append()">append</a>

    JavaScript

    function append() {
    var scriptContent = "var whatever=1";
    var _js = document.createElement('script');
    _js.setAttribute('type', 'text/javascript');
    textNode = document.createTextNode(scriptContent);
    _js.appendChild(textNode);  
    document.getElementsByTagName('body')[0].appendChild(_js);
    return false;
}
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