Javascript if in x [duplicate]

Answer 1

in more genric way you can do like this-

//create a custopm function which will check value is in list or not
 Array.prototype.inArray = function (value)

// Returns true if the passed value is found in the
// array. Returns false if it is not.
{
    var i;
    for (i=0; i < this.length; i++) {
        // Matches identical (===), not just similar (==).
        if (this[i] === value) {
            return true;
        }
    }
    return false;
};

then call this function in this way-

if (myList.inArray('search term')) {
     document.write("It's in the list!")
}