how to match a string in whole array element

Question

I have a array in javascript

var arr = ["12","22","33","42"];

If I search for 1 it should not match because it is not a complete array element.
If I search for 12 it should match because it is a complete array element.

I have searched web for this but found

var match = arr.indexOf('1');

But this does not solve my problem

Anybody can help?

It looks like indexOf seems exactly what you need. Maybe you can elaborate on why it doesn't solve the problem? — Felix Kling, May 10 '14 at 05:24
indexOf should work. So if it doesn't work I would suggest posting your code. And remember that indexOf returns -1 if not found. You can read about indexOf here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf — WizKid, May 10 '14 at 05:25
+1 to Felix -- also, just to be clear indexOf returns -1 when there is no match. — jtmoulia, May 10 '14 at 05:26
If indexOf doesn't work, then either you're doing something wrong or you're not phrasing your question correctly — Meredith, May 10 '14 at 05:26
If you want a boolean return value, check the return value of indexOf("1") for example. If it returns -1, return false, if it returns a value greater than -1, return true — blueygh2, May 10 '14 at 05:27

score 0 · Answer 1 · answered May 10 '14 at 05:26

So indexOf returns the position the element you are searching for is at. If no element is found, it returns -1. This is the way you can check it.

var arr = ["12","22","33","42"];
var match = arr.indexOf("12");
if(match > -1) {
    // Found match, at position "match"
    var element = arr[match]; // = "12"
} else {
    // Element not in array
}

score 0 · Answer 2 · answered May 10 '14 at 05:29

0

Try This:

var a = ["12","22","33","42"];
if(a.indexOf('12')!= '-1')
{
    alert("success")
}
else
{
    alert("failure")
}

answered May 10 '14 at 05:29

anusha

2,087
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score 0 · Accepted Answer · answered May 10 '14 at 09:58

please refer this, I think this will help you,
The $.inArray() method is similar to JavaScript's native .indexOf() method in that it returns -1when it doesn't find a match. If the first element within the array matches value, $.inArray() returns 0.
so try this.
$.inArray(1,arr) > -1

how to match a string in whole array element

3 Answers3