Head Rush Ajax

you’re on your way 4

77

ajax requests

Speaking of planning...

Looking for answers to the Be the Architect exercise back on

page 73? You’ll nd them... throughout this entire chapter.

As you read through the chapter, you’ll see how we decided to

build the Break Neck Pizza order app. See how your decisions match

up with ours, and think about how you might do things differently.

Sometimes, it’s better to do a little planning

before you jump in and start writing code. In

this case, we can go ahead and decide what

we’ll call the JavaScript function that makes a

request to the Break Neck server, even though

you haven’t started coding it yet. Let’s name this

function getCustomerInfo(), since that’s

exactly what the function is going to do: ask the

server for the customer’s information.

And now that you know the name of this

function, you can go ahead and update

the HTML in the Break Neck form to run

getCustomerInfo() when a phone number

is entered... even though you won’t code the

function for a few more pages.

Plan rst, code later

Aren’t you getting a little ahead of

things? How can we write an event

handler if we haven’t even written a

JavaScript function yet?

You might want to ip back to your

application blueprints on page 73,

and add the name of this JavaScript

function to your notes.