Head Rush Ajax

44

Chapter 1

Now what

do I do?

Web Browser

Internet Explorer

Firefox

Opera

Safari

Mozilla

The browser gets the response from the server, but won’t do anything with

that response unless you tell it to. So we need to gure out a way to let the

browser know to run our updatePage() function once it gets a response.

What should the browser do with the server’s response?

JavaScript

PHP script

Somehow, we need to tell the

browser to run updatePage()

when it gets a response from

the server.

The server gets a request

from the browser,

based on our code in

getBoardsSold()...

...and then the server

sends its response back

to the web browser.

The browser gets

the response, but

doesn’t know what

to do with it.

Once we get the browser to

run updatePage(), we can

use JavaScript to update

the Boards report.

<script>

var request...

function

updatePage() {

...

}

</script>

<?php

require(‘lib.php’);

function go() {

$myVar = ...

return ...

}

?>

updatePage()

Boards

Sold

Cash for

Slopes

Number of

Boards Sold

<script>

var request...

function

getBoardsSold()

{

...

}

</script>

Request Total

Boards Sold

In just a few pages, you’ll learn

about how to use the DOM-the

Document Object Model-to make

changes like this to your web page,

all without any page reloads.

talking to the browser

you’re on your way 4

45

next generation applications

Tonight’s c ...