PHP:

correct code example

AJAX

asynchronous code

AJAX:

synchronous code:

various stages of a TCP connection is shown by...

AJAX:

readystate does not test success or failure
status must be tested after readystate:

Add code to implement the the following three messages (AJAX):

1.Loading, please wait
2.Successfully loaded
3.Error trying to fetch

By putting the status into its own IF block on the line after the readyState check, then this ensures this check has completed before check on Status

short JSON example

modules JSON example

prerequisites must be an array

semesters can be an integer with 3 permissible values.

AJAX jQuery

.click & .load example

AJAX “Request failed” message

AJAX “Awaiting response. . .” message

AJAX “Request complete” message

{
”title”: ”Home”,
”abstract”: ”Welcome to XYZ”,
”main-content”: ”some more text”
}

.getJSON for for above JSON data:

Write the relevant JavaScript/jQuery code to extract the maximum marks:

Add code to implement the the following three messages (jQUERY):

1.Loading, please wait
2.Successfully loaded
3.Error trying to fetch

.load() method (with ASO):

.load() method (without ASO):

jQuery “Please wait” message