IE: indexOf results in “object doesn't support this property or method”

Question

I have the following if statement:

if (buyArray.indexOf(dealWith,0) != -1){

Which is breaking in ie (ie 8 on XP) with "object doesn't support this property or method".

Anyone have a work around for this?

Answer 1

yeah, IE<9 doesn't support indexOf. You can implement a shim like the one showed here: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf

Or if you already using jQuery you can use inArray. Also underscore has an implementation for it.

Answer 2

Simply changed to the use jQuery.inArray. Thanks to ZER0 for the heads up

if ($.inArray(dealWith, buyArray) != -1) {