Returning true if JavaScript array contains an element

Question

So far I have this code:

var isMatch = viewedUserLikedUsersArray.indexOf(logged_in_user);
    if (isMatch >=0){
      console.log(\'is match\');
    }
    els         


        

Answer 1

The One and Only ChemistryBlob answer with Array.prototype

Array.prototype.findMatch = function(token) {
    var i = 0, count = this.length, matchFound = false;

    for(; i < count; i++) {
        if (this[i] === token) {
            matchFound = true;
            break;
        }
    }

    return matchFound;
}

var isMatch = viewedUserLikedUsersArray.findMatch(logged_in_user); // etc.