Head Rush Ajax

you’re on your way 4

103

ajax requests

Man, Break Neck pizza rocks. There’s

nothing like a breakfast of cold pizza, a

whipped latte from Starbuzz, and the

Webville Times to read.

<script>

var request...

function foo()

{

...

}

</script>

JavaScript

<script>

var request...

function foo()

{

...

}

</script>

Customer’s Phone Number

Customer’s Address

Customer’s Order

Step 3: Retrieve the customer’s address

In this step, we need to use the address that the Break Neck PHP

script will return in response to the request we made in Step 2.

Then, we can have the browser run a JavaScript function once

it has a response from the Break Neck server, and pass along the

address from the script.

<script>

var request...

function foo()

{

...

}

</script>

Customer’s Address

Web Server

We’ll need to write this JavaScript

function. It can get the server’s

response from the request object you

created back in Step 2.

Remember, it’s the browser that gets

the response from the server. Then, it

“calls back” the JavaScript function you

specied in your request object.

Here’s where the browser

runs your callback function.

The Break Neck PHP script looks

up the customer by his phone

number, and returns his address.

The browser runs your callback function every time

the ready state of your request object changes.

On to the next step in

coding Break Neck.