JavaScript control input box can only input non-negative positive integers

1. Background to the issue

Problem: An input box, the input is the month, ensure that the input can only be non-negative positive integers

2. JavaScript code

      function checkMonth()

    {

          $("month").keyup(function(){

 var temp = $(this).val();

                 $(this).val((/ \ D/^0/g,''));

 })bind("paste",function(){

var temp = $(this).val();

                 $(this).val((/ \ D/^0/g,''));

        }).css("ime-mode","disabled");

    }

3、Page code

<label> Month: </label>

    <input type="text" />