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<!DOCTYPE html>
​
  <input type=text class='number' id='txtboxToFilter' >
​
  <script>
    console.log('1');
     console.log('22');
 function number(e) {
var theEvent = e || window.event;
var key = theEvent.keyCode || theEvent.which;
    console.log('22');
if(key!=13&&key!=9){//allow enter and tab
  key = String.fromCharCode( key );
  var regex = /[0-9]|\./;
  if( !regex.test(key)) {
    theEvent.returnValue = false;
    if(theEvent.preventDefault) theEvent.preventDefault();
    }   
  }
}
​
$(document).ready(function(){
    $("#txtboxToFilter").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 < 48 || event.keyCode > 57 ) {
                event.preventDefault(); 
            }   
        }
    });
});
</script>
​
 
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