Array

Usually, to create an array:

var testAry = new Array();

testAry[0] ="abc";
testAry[1] ="abc1";
testAry[2] ="abc2";

But I also see:

var testAry = new Array();

testAry["abc"] ="abc";
testAry["abc1"] ="abc1";
testAry["abc2"] ="abc2";

Why is a string allowed as an index? I believe the number should only be allowed.


Thanks

Scott

Truth be told that arrays (which are exactly the same as objects in JS) index everything by strings. When you do

arr[4] = blah;

the 4 gets coerced (automatically converted) to a string, "4".