jquery framework usage tutorial AJAX_jquery

I tried AJAX for a while and found it to be much simpler than prototype. In JQuery, AJAX has three implementation methods: $.ajax(), $.post, $.get().
XHTML (main):

Enter name:

Enter age:

Enter gender:

Enter job:

Submit
POST submit
GET submit
JS:
1. Introduce jquery framework:


2. Build AJAX. The advantage of JQUERY is that there is no need to use JS code in XHTML to trigger events. It can be directly encapsulated in JS files:

PHP code:
$arr=$_POST; //If you send data using $.get(), change it to $_GET. Or simply: $_REQUEST
$myjson=json_encode($arr); echo $myjson; ?>