for..in loop loops over non-numeric indexes “clean” and “remove”

Question

This is something very basic I might be missing here but I haven\'t seen such result till now.

I have a for loop where options.headers.length is 3. And in

Answer 1

if you don't want to iterate clean and remove then change the loop to:

for (var i=0; i< options.headers.length;i++){
//use i for getting the array data
}

if you use for (index in options.headers) it will iterate for non-numeric keys also.