Question

I have two arrays:

var firstarray = [123, 13, 34, 12, 63, 63];

var secondarray = [[10,20,10], [122, 123, 53], [542, 234, 12, 331]];

I need to have a function that works something like this:

function checkArray(array){
    //if array contains multiple arrays, return true
    //if the array contains only values, return false
}

The number of arrays inside secondarray always varies.

Answer 1

Hint: Loop on the first array and determine if one of the object you’re reading is an array.

Here is a function that could help you :

function is_array(input){
    return typeof(input)=='object'&&(input instanceof Array);
}