Variable contains in the array? JavaScript

Question

how to check that the variable occurs in an array?

In Example

var X = 5;
var newArray = [1,2,5]

And now something like this

if(X.isin(newArray)
{ document.write( "YES");}

something like this exist? :P

score 5 · Accepted Answer · answered Jul 07 '13 at 08:19

5

if (newArray.indexOf(X) > -1) {
    // value X exists in newArray
}

answered Jul 07 '13 at 08:19

zerkms

But are you sure this works in all browsers? In the "compatibility" section it says it might not be available in all browsers. – mohkhan Jul 07 '13 at 08:36
@mohkhan: 1. there are a list of supported browsers on the link 2. There is a shim function definition for the browsers don't have its support natively – zerkms Jul 07 '13 at 08:38

score 0 · Answer 2 · answered Jul 07 '13 at 08:24

0

You can also use JQuery's inArray() method - it solves compatibility problems. Code:

var X = 5;
var newArray = [1,2,5]
if ($.inArray(X, newArray) > -1) {
    alert('is in array');
}

answered Jul 07 '13 at 08:24

Daniel Kmak

2 Answers2