Web Programming - Week 8

Question 1

What is AJAX

Answer 1

Asynchronous Javascript and XML - A set of web development techniques

Question 2

AJAX Bullet points

Answer 2

Enables web browser to send and recieve data in the background
Makes it possible to update the page without reloading

Question 3

How to create an object for AJAX

Answer 3

var httprequest = new XMLHttpRequest();

Question 4

How to initialise a request

Answer 4

httprequest.open(method, url, async)

Question 5

Methods of http requests

Answer 5

GET and POST

Question 6

How to send a http request

Answer 6

httprequest.send();

Question 7

How to send a request with form data

Answer 7

httprequest.setRequestHeader(“Content type”, url)

Question 8

AJAX status responses

Answer 8

200 - OK
403 - Forbidden
404 - Page not found

Question 9

Choosing which function will manage a response of a request

Answer 9

httprequest.onreadystatechange = function;

Question 10

jQuery AJAX methods

Answer 10

load() - loads data directly in html
$.get()
$.post() - large data
$.ajax() - most configurable

Question 11

AJAX load syntax

Answer 11

$(selector).load(URL,callback);

Question 12

What is the callback argument

Answer 12

The name of a function to be executed after a load method

Question 13

AJAX method syntax

Answer 13

$.ajax({name:value, name:value…})