javascript document.head.appendChild(element) 即 ie7 和 ie8
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document.head.appendChild(element) ie ie7 and ie8
提问by Dan
i am having an issue appending a script to the head in ie7/8
我在 ie7/8 中将脚本附加到头部时遇到问题
this is the code i am using
这是我正在使用的代码
var requireTag = document.createElement('script');
requireTag.setAttribute('type', 'text/javascript');
requireTag.setAttribute('src', link+ 'require.js');
requireTag.setAttribute('data-main', link+ 'data');
document.head.appendChild(requireTag);
this is the error i get
这是我得到的错误
SCRIPT5007: Unable to get value of the property
'appendChild': object is null or undefined
I found this createElement error in IE8and tried updating my code to have
我在 IE8 中发现了这个createElement 错误并尝试更新我的代码
var appendChild = document.head.appendChild(requireTag);
but still get the same error. Can anyone help?
但仍然得到同样的错误。任何人都可以帮忙吗？
回答by Musa
According to https://developer.mozilla.org/en-US/docs/Web/API/document.headand http://msdn.microsoft.com/en-us/library/gg593004%28v=vs.85%29.aspx, document.headisn't available to IE<9. Just use
根据https://developer.mozilla.org/en-US/docs/Web/API/document.head和http://msdn.microsoft.com/en-us/library/gg593004%28v=vs.85% 29.aspx，document.head不适用于 IE<9。只需使用
document.getElementsByTagName('head')[0].appendChild(requireTag);
回答by Dan
I believe document.headisn't supported in those browsers.
我相信document.head这些浏览器不支持。
Try this instead:
试试这个：
var head = document.getElementsByTagName("head")[0];
head.appendChild(requireTag);
