javascript - How to prevent form submiting before DOM is ready? -

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I am using javascript to validate the form,

but then restrain the case Can not do when the form is submitted before the DOM is ready

I tried:

But the form can still be submitted.

Before submitting a dome, check before posting to stop a post. 

  & lt; Form method = "POST" onsubmit = "return handle ()" & gt; & Lt; Input type = "submit" / & gt; & Lt; / Form & gt; & Lt; Script & gt; Function handles () {return IMDR; } Var imReady = false; Function set read () {imReady = true; } // Edit: Add this line window.onDomReady = setReady (); & Lt; / Script & gt;

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