How to check if an item is already existing in an array before push using angularjs

Question

I have three arrays:

How will I be able to check if my selection does not exist in arr2?

For example I selected 14 from arr1, since it is already existing in arr2, the button will be disabled and should not be pushed in arr3.

tschiela · Accepted Answer · 2013-11-20 08:51:54Z

26

That is a JavaScript relating question, not AngularJS. But may that answer your question:

if(arr2.indexOf("14") == -1){
  arr3.push("14");
}

answered Nov 20, 2013 at 8:51

tschiela

5,2714 gold badges30 silver badges35 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

If you are using babel ES6, you can use Set and push without checking