It's simple really

Input Number : <input id=numberinput onkeypress=return event.charCode >= 48 && event.charCode <= 57 />



<button id=btn onclick=doAction()>

Send

</button>



<script>

var doAction = function () {

    var input = document.getElementById('numberinput');

    var times = parseint(input.value);



    for(var i = 0; i < times; i++) {

      //do whatever you need to do

    }

}

</script>