js zip

.js

var arr1 = [1, 2, 3, 4],
    arr2 = [5, 6, 7, 8, 9];
    
function* values(arr) {
    for (var i = 0, len = arr.length; i < len; i++) {
        yield arr[i];
    }
} 
    
function* zip(...iters) {
    while (true) {
        var res = [];
        for (var i = 0, len = iters.length; i < len; i++) {
            var next = iters[i].next();
            if (next.done) {
                return;
            }
            res.push(next.value);
        }
        yield res;
    }
}

for ([k, j] of zip(values(arr1), values(arr2))) {
    console.log(k, j);
}