Head Rush Ajax

you’re on your way 4

307

post requests

<?php

require(‘lib.php’);

function go() {

$myVar = ...

return ...

}

?>

Web server

placeOrder.php? I have the

customer’s address, phone number,

and order. I’m sending them over

as name/value pairs via POST, OK?

POST

data

The POST data is the

same as before...

...but with a content type,

the server knows what

kind of data to expect.

placeOrder.php

This time, the request

includes a content type

along with the request URL

and POST data.

HTTP/1.1 400 Bad Request

Request Version: HTTP/1.1

Response Code: 400

Date: Wed, 01 Mar 2006 21:27:39 GMT

Server: Apache

X-Powered-By: PHP/4.3.11

Status: No order was received.

Connection: close

Transfer-Encoding: chunked

Content-Type: text/html

Web server

Web Browser

Internet Explorer

Firefox

Opera

Safari

Mozilla

<script>

var request...

function foo()

{

...

}

</script>

request.getResponseHeader(“Status”)

Servers send information to the

browser using response headers.

This is what the server sends

back to the browser.

The server sends back a response

header and status code.