How to check if an array contains another array?

Question

I needed 2d arrays, so I made nested array since JavaScript doesn\'t allow them.

They look like that:

var myArray = [
      [1, 0],
      [1, 1],
            


        

Answer 1

The code provided by D. Young's comment that checks for any length array is faulty. It only checks if the first element is the same.

A corrected version of D. Young's comment:

function isArrayInArray(source, search) {
    var searchLen = search.length;
    for (var i = 0, len = source.length; i < len; i++) {
        // skip not same length
        if (source[i].length != searchLen) continue;
        // compare each element
        for (var j = 0; j < searchLen; j++) {
            // if a pair doesn't match skip forwards
            if (source[i][j] !== search[j]) {
                break;
            } else if (j == searchLen - 1) {return true}
        }
    }
    return false; 
}