How do I unset an element in an array in javascript?

Question

How do I remove the key \'bar\' from an array foo so that \'bar\' won\'t show up in

for(key in foo){alert(key);}

Answer 1

http://www.internetdoc.info/javascript-function/remove-key-from-array.htm

removeKey(arrayName,key);

function removeKey(arrayName,key)
{
 var x;
 var tmpArray = new Array();
 for(x in arrayName)
 {
  if(x!=key) { tmpArray[x] = arrayName[x]; }
 }
 return tmpArray;
}