Question

i have an 2-dimensional array. for example

var bruecken = [[1,2],[3,4]];

now i am trying to test, if a subarray exists:

console.log(jQuery.inArray([1,2], bruecken));

or

console.log(bruecken.indexOf([1,2]));

but both ways it returns -1. what am i doing wrong?

Answer 1

The fastest way would be to use a for loop and compare them, then return if found. Here is something you can work with, I used JSON for comparison, but you can just use whatever comparator you find best (there are plenty):

function arrayInArray(needle, haystack) {
    var i=0, len=haystack.length, target=JSON.stringify(needle);
    for(; i<len; i++) {
        if (JSON.stringify(haystack[i]) == target) {
            return i;
        }
    }
    return -1;
}

arrayInArray( [0,1], [ [1,2], [0,1] ] ); // 1

If you want booleans, just return true instead of i and false instead of -1.