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

For those who are interested in finding an array inside another and get back an index number, here's a modified version of mohamed-ibrahim's answer:

function findArrayInArray(innerArray, outerArray) {
    const innerArrayString = JSON.stringify(innerArray);
    let index = 0;
    const inArray = outerArray.some(function (element) {
        index ++;
        return JSON.stringify(element) === innerArrayString;
    });
    if (inArray) {
        return index - 1;
    } else {
        return -1;
    }
}
findArrayInArray([1, 2, 3], [[3, .3], [1, 2, 3], [2]]); // 1
findArrayInArray([1, 2, 3], [[[1], 2, 3], [2]]) // -1

This function returns the index of the array you are searching inside the outer array and -1 if not found.

Checkout this CodePen.