Question

In a php file i have used include to include the following js.php file
and prior to that i have included the jquery file.

<script type="text/javascript">

$(document).ready(function(){
     alert("hello");
});
</script>

But it doesn’t work. Why? when I skip the $(document).ready function it works.

But i need jquery code inside. what is wrong?

Answer 1

The most likely answer, based on what you have said, is that the core jQuery file is not actually included correctly in the page.
You need something like:

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>

Chances are, this is missing or typed incorrectly.