how can get only numbers from the text using jquery

Question

I want to get only the numbers(123) not the text(confirm), here is my code

<p>123confirm</p>  <script type="text/javascript"> $(document).ready(function(){     $('p').click(function(){       var sd=$(this).text();       alert(sd);   }); });   </script> 

Answer 1

I think a RegExp would be a good idea:

var sd = $(this).text().replace(/[^0-9]/gi, ''); // Replace everything that is not a number with nothing var number = parseInt(sd, 10); // Always hand in the correct base since 010 != 10 in js 

Answer 2

You can use parseInt for this, it will parse a string and remove any "junk" in it and return an integer.

As James Allardice noticed, the number must be before the string. So if it's the first thing in the text, it will work, else it won't.

-- EDIT -- Use with your example:

<p>123confirm</p>  <script type="text/javascript"> $(document).ready(function(){     $('p').click(function(){       var sd=$(this).text();       sd=parseInt(sd);     alert(sd);   }); });   </script>