DOMContentLoaded vs onload

http://ie.microsoft.com/testdrive/HTML5/DOMContentLoaded/Default.html

The DOMContentLoaded event fires when parsing of the current page is complete; the load event fires when all files have finished loading from all resources, including ads and images. DOMContentLoaded is a great event to use to hookup UI functionality to complex web pages.

http://jsperf.com/onload-vs-domcontentloaded

 http://ablogaboutcode.com/2011/06/14/how-javascript-loading-works-domcontentloaded-and-onload/

 http://optimizeasp.net/

http://dancewithnet.com/2010/04/21/even-faster-websites/

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原文地址：https://www.cnblogs.com/daishuguang/p/3398143.html