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97

answers:

3
+2  Q: 

Javascript array.clear() is not a function?

I'm trying to empty an array containing my drawn coordinates when a button "clear" is pressed. When I call drawnDivs.clear(), I get an error that it is not a function. drawnDivs is certainly an array, and I have firebug console.logs printing things out. It's hosted here.

+4  A: 

Nope, it's not. But drawnDivs.length = 0 should work.

Jordan  2010-10-26 03:50:48
This will work if it's a true array, and not just an array-like object.
thomasrutter  2010-10-26 03:54:29
@thomasrutter. True but it will preserve references and any other addition properties and functions defined on the array.
Jordan  2010-10-26 04:13:44
@Jordan yes, this is still the best solution overall. And to be honest, it would still work on array-like objects, it just wouldn't free any of the existing members from memory right away. So only a minor point really.
thomasrutter  2010-10-26 12:43:38
+2  A: 

drawnDivs = [];

Mike Ruhlin  2010-10-26 03:52:06
Be careful, since this will not modify other references to the object.
jleedev  2010-10-26 03:59:38
+1  A: 

Answered here stackoverflow

subhaze  2010-10-26 04:06:26

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