How to determine the external JS finished loading

page introduces a third party JS,
I want to know how to judge the JS JS code has been finished loading .
such as:



This xxx.js all finished loading .
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http://blog.csdn.net/huli870715/article/ details/6373170

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look upstairs
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the contents of this link should be able to solve the problem, right
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browser is blocking the order to load the document , right ?
That is when the script is loaded before him , he has not yet loaded, when he loaded the script after he certainly loads better.
Could now have the default browser and even multi-threaded asynchronous page load it?
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script tag should be synchronized blocking