compare 2 arrays so that if one array has elements within the other array these elements are eliminated from the other array?

Question

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JavaScript array difference

Using jquery or javascript how do I compare 2 arrays so that if one array has elements within the other array these elements are eliminated from the other array?

Answer 1

You must cross the two array and compare each element of the first with each element of the second, then, use the Array.splice method to remove an element.

for (var i in array1) {
    for (var j in array2) {
        if (array2[j] == array1[i]) {
            array2.splice(j, 1);
            break;
        }
    }
}