for loop on a array
var array = [1, 2, 3, 4, 5];
// made an array
for (var i = 0; array[i]; i++) // browse your array with this simple condition on index
console.log('element '+i+' = '+array[i]);
//output:
element 0 = 1
element 1 = 2
element 2 = 3
element 3 = 4
element 4 = 5