Javascript Function, isEqualsArray

배열 비교

function isEqualsArray(arr1, arr2) {
        if (!arr1 || !arr2)
            return false;

        if (arr1.length != arr2.length)
            return false;

        for (var i = 0; i < arr1.length; i++) {
            
            if (arr1[i] instanceof Array && arr2[i] instanceof Array) {
                if (!isEqualsArray(arr1[i], arr2[i])) 
                    return false;
            } else if (arr1[i] instanceof Object && arr2[i] instanceof Object) {
                if (Object.keys(arr1[i]).length != Object.keys(arr2[i]).length)
                    return false;

                for (var key in arr1[i]) {
                    if (arr1[i][key] != arr2[i][key]) {
                        return false;
                    }
                }
            } else if (arr1[i] != arr2[i]) {
                return false;
            }
        }
        return true;
    }