The IsArray() function in IE8 encounters an issue where it expects an error object

I am interested to know why IE8 is having trouble with this line of code:

if (isArray(obj))

When I check in the IE8 javascript console, I see the following:

>>obj
{...}
>>typeof(obj)
"object"
>>Object.prototype.toString.call(obj)
"[object Array]"

and even

>>obj.length
7

However,

>>isArray(obj)
  Object expected

Why is this happening (does ie8 not support isArray?) and what would be the most effective way to resolve it?

I am experimenting with using a new version of Angular for IE8. While I understand that it is not officially supported, I hope to make improvements on the app's performance.

Thank you.

javascriptangularjsinternet-explorermethodsinternet-explorer-8

Answer №1

From Internet Explorer 9 onwards, the functionality Array.isArray() is available.

Give this a shot: 

Array.isArray = function (obj) {
    return Object.prototype.toString.call(obj) === "[object Array]";
};

Array.isArray(obj);

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