Check if Variable in array javascript

Question

Short code for checking if a variable also exists inside an array is needed. Im thinking something like this:

   var category='cars';
   if (in_array(category, some_array)){
       do stuff!
   }

Is there any such function in js?

Thanks

score 1 · Answer 1 · answered Feb 19 '10 at 15:09

1

if (some_array.indexOf(category) >= 0) {
   // do stuff
}

answered Feb 19 '10 at 15:09

kennytm

Not native in IE, but the link you posted does show an example implementation using `Array.prototype`. – Andy E Feb 19 '10 at 15:17

score 0 · Accepted Answer · edited May 23 '17 at 12:30

0

There's no native "in_array"-function in JavaScript (as in PHP), check out this solution:

Also a search would have lead you here:

edited May 23 '17 at 12:30

Community

answered Feb 19 '10 at 15:10

Select0r

score 0 · Answer 3 · answered Feb 19 '10 at 15:13

0

if(some_array[category] !== undefined){
  // it's there
}

answered Feb 19 '10 at 15:13

Svante Svenson

3 Answers3