How do I check if an array includes a value in JavaScript

0 votes

What is the quickest and most effective method to determine whether a JavaScript array has a value?

The only method I am aware of is as follows:

function contains(a, obj) {
    for (var i = 0; i < a.length; i++) {
        if (a[i] === obj) {
            return true;
        }
    }
    return false;
}

Is there a better and more concise way to accomplish this?

Sep 23 in Java-Script by Abhinaya
• 1,160 points
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