Ensure only valid numeric characters are entered into a textbox - Javascript jQuery

Javascript examples for jQuery:Form Number Field

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Description

Ensure only valid numeric characters are entered into a textbox

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
      <script type="text/javascript" src="https://code.jquery.com/jquery-1.4.3.min.js"></script> 
      <script type="text/javascript">
$(function() {//from   w  w w. j  a va2 s . c  o  m
    $("input").keyup(function() {
        this.value = this.value.match(/[-+]?[0-9]*\.?[0-9]*/);
    });
});

      </script> 
   </head> 
   <body> 
      <input type="text">  
   </body>
</html>

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