javascript - indexOf in IE8 throwing error but works in all other browsers -

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hey have following js code:

for(var = choicesorder.indexof(cat)+1; i<choicesorder.length; i++)

and throwing error: script438: object doesn't support property or method 'indexof'

how can go fixing since works in other browsers?

you can find prototype version can implement here: https://developer.mozilla.org/en-us/docs/javascript/reference/global_objects/array/indexof


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