I want to start this tutorial in step by step metod. Here first of all lets link jQuery:
<script type=”text/javascript” src=”../jquery-1.2.1.js”></script>
Now add javascript function:
function addNumbers() {

var number1 = $(’#number1′).attr(’value’);

var number2 = $(’#number2′).attr(’value’);

$.get(”giveMeSomething.php”, { number1: number1, number2: number2 },

function(data){

alert(”Data Loaded: ” + data);

});

}
Here var number1= $(’#number1′).attr(’value’); we get the calue from the first field in our page. [...]