Make_Recursive

// Global scope object is stored in the window variable in js
var myVar = 10;
//console.log("myVar" in window); // -> true
//console.log(window.myVar); // -> 10

for (var name in myVar) {
    console.log(name);
}

// TO DO: Make Recursive
// the sum of a range
function range(start, end) {
    var x = Array();
    if (start <= end) {
        for (var i = start; i < (end+1); i++) {
            x.push(i);
        }
        return x;
    }
    else {
        for (var i = start; i > (end+1); i--) {
            x.push(i);
        }
        console.log(x);
        return x;
    }
}

function sum(n) {
    var y = 0;
    if (n >= 0) {
        for (var i = 0; i <= n.length; i++) {
            y += Number(i);
        }
        return y;
     }
    else {
        for (var i = 0; i <= n.length; i++) {
            y -= Number(i);
        }
        return y;
    }
}
console.log(sum(range(1,-10)));