Text box that allows only numbers using JQuery

below code will allows text box to enter numerics only

To use this you need use numaric as class element as shown below

$(".numeric").keydown(function(event) {
     // Allow only backspace and delete
     if ( event.keyCode == 46 || event.keyCode == 8 ) {
       // let it happen, don't do anything
     }
     else {
       // Ensure that it is a number and stop the keypress
       if (event.keyCode  57 ) {
         event.preventDefault(); 
       } 
     }
   });