Task: A simple Ajax application $($Total $10$ marks$)$

$$ The overall task is to get a general idea of how Ajax works and modify program to incorporate

additional concepts

Step $1$: $(2$ marks$)$

Copy from Canvas, into your $$lab$07$ folder on the server the various sample files from Lecture $7$ which

are at the bottom of the $$Week $7$ Lecture$$ page. Load them into your preferred editor, and read the files

carefully, so that you get a good feel for the structure of the example, and appreciate how the html$,$

Javascript and PHP technologies work together. Use your browser to visit simpeajax.htm in the

$$get$-$xhr$$ folder and run the example. The php program $($XHR GET version$)$ has a $$sleep$$ statement

in it$,$ so that the server takes time to respond. Experiment with various client interactions in the waiting

period $$ for example, try entering different data whilst waiting for the server to respond, and see what

the eventual response is$.$

Examine the code in the $$po