Why does the “onmouseover” event use “return true” to prevent default behavior?

Instead of using return false true to prevent default event behaviour, use the default method / attribute on the event object.

Instead of using return false / true to prevent default event behaviour, use the default method / attribute on the event object: elem. Onmouseover = function(e) { if (!e) var e = window. Event; // IE if(e.

PreventDefault) { e.preventDefault(); } else { e. ReturnValue = false; // IE } }.

Who knows why really. Just the way it is: you return TRUE from onmouseover to prevent url from appearing in the status bar, which would be the default behaviour indeed.

As far as I know, returning true to prevent the url of a link to show up in the status bar is an IE-specific (mis-)feature. And trying to understand why IE does things the way it does is often a lost cause - just live with it...

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