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求dojo/domReady不能在sync loader下使用的原因

I saw there was a sentence "You should not use dojo/domready! with modules that may be loaded with the legacy synchronous loader" in topic http://dojotoolkit.org/reference-guide/1.8/dojo/domReady.html .

It explains that domready under sync loader may cause dojo/ready to invoke its callbacks even required modules are not loaded. I don't understand why.

My understanding is,Under sync loader,all module are loaded through XMLHttpRequest. They are loaded in a sequence. The sequence blocks DOM to parse. So,DOMContentLoaded event should always be fired at end. This means,Modules are all loaded before DomContentLoaded. dojo/domready also means dojo/ready.

Am I wrong? Please correct me.

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