How to find same word in paragraph through JavaScript

In this tutorial we will learn How to find same word in paragraph through JavaScript. When you search in a paragraph, you can use a pattern to describe what you are searching for.Some time it is very useful.

Here a simple script to help you through JavaScript:

<html>
<body><script type="text/javascript">

var str="and  this all and there is and is?";
var str1=/and/g;
document.write(str.match(str1));</script></body>
</html>

I think you will be find this tutorial usefull, THANKS.