Iterating jquery each loop for two arrays at once

Question

I have two Javascript arrays of same size

var demo=new Array();
var demo3=new Array();

I need to access the value of the two array in one e

Answer 1

Since they're the same size, just loop one, and reference the other with i.

$.each(demo, function(i, item) {
    console.log(demo[i], demo3[i]);
});

If you don't need the indices paired, then just run them back to back by using .concat.

$.each(demo.concat(demo3), function(i, item) {
    console.log(item);
});