遞歸求嵌套數組中最大值

/*
This challenge requires that, given as input an array which may contain:
 - integer values.
 - inner-arrays of integer values.
 - any recursive combination thereof.
 Return the largest value contained in the array or any of its sub-arrays.

Input: [1, [2, [3, 4]], [5, [6, 7]]]

Output: 7
*/

function recursiveMax(input){
    var nums=[];
    for(var i=0;i<input.length;i++){
        var obj=input[i];
        if(obj instanceof Array){
            nums.push(recursiveMax(obj));
        }
        else{
            nums.push(obj);
        }
    }
    return Math.max.apply(null,nums);
}

//Test
recursiveMax([1,[[2,3],4,5,6,7],8,9,10]);//output 10