what is the alternate function for indexOf for string in IE8?

Question

I have used indexOf to check whether i have particular text is present in a sentence or not like the following

var temp = "";
temp="data not available";
if(temp.indexOf("datas") == 0){
    alert("True");
}
else{
    alert("false");
}

The problem i was facing is indexOf is not supported in Internet Explorer 8. How to perform this operation in IE8 too? Is there any default alternate functions available in jquery?

I tried inArray but it supports only array.

fiddle

add it as [given](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf) — Grijesh Chauhan, Feb 14 '14 at 06:31
One of solution is given here, https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf — Adil, Feb 14 '14 at 06:33
you can find answer in so http://stackoverflow.com/questions/9768574/no-support-for-indexof-in-ie-8 — Raja Jaganathan, Feb 14 '14 at 06:34
@RC. This is not duplicate am asking for string not for array and also am asking whether any default function available or not. — Pandiyan Cool, Feb 14 '14 at 06:37
http://stackoverflow.com/questions/1744310/how-to-fix-array-indexof-in-javascript-for-internet-explorer-browsers — Prashobh, Feb 14 '14 at 06:39
You can convert string into array using `string.split();` Then apply `jQuery.inArray( value, array [, fromIndex ] )` — Grijesh Chauhan, Feb 14 '14 at 06:44

score 14 · Accepted Answer · answered Feb 14 '14 at 06:52

14

I think you're confused about which indexOf() is supported.

You're using String.prototype.indexOf(), which is supported from IE6 onwards, according to Microsoft's documentation.

It's Array.prototype.indexOf() that's only supported from IE9 onwards.

answered Feb 14 '14 at 06:52

Ja͢ck

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1

Thanks for the answer. How to use String.prototype.indexOf() ? could you please give me a example. I was so confused. – Pandiyan Cool Feb 14 '14 at 07:01
@PandiyanCool You don't need to change anything; it will just work the way you have it. Though, I'm not sure what the code is supposed to do. – Ja͢ck Feb 14 '14 at 07:04
when i run the code it shows error on page in IE8. Message: Object doesn't support this property or method – Pandiyan Cool Feb 14 '14 at 07:06
The code you've shared works absolutely fine; perhaps the problem is somewhere else. – Ja͢ck Feb 14 '14 at 07:17
Okay jack i will check it. – Pandiyan Cool Feb 14 '14 at 07:23

score 0 · Answer 2 · answered Feb 14 '14 at 06:40

0

You can use String.search:

var temp = "data not available";
if(!temp.search("datas")){
    alert("True");
} else {
    alert("false");
}

Fiddle

(NB: I don't have IE8 to test it)

answered Feb 14 '14 at 06:40

what is the alternate function for indexOf for string in IE8?

2 Answers2

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