How to filter integer part from string in jquery

This will get all the numbers separated by coma:

<script>
 $(document).ready(function(){

var str = "10 is smaller than 11 but greater then 9";
var pattern = /[0-9]+/g;
var matches = str.match(pattern);

 });

</script>   

After execution, the string matches will have values "10,11,9"
If You are just looking for thew first occurrence, the pattern will be /[0-9]+/ - which will return 10
(There is no need for JQuery)