Pro PHP and jQuery by Jason Lengstorf.pdf - Computer Science ...

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CHAPTER 2 ■ COMMON JQUERY ACTIONS AND METHODS
Figure 2-22. The loaded AJAX information from ajax.php
$.ajaxSetup()
To set default options for AJAX calls, the $.ajaxSetup() function is used. For instance, to specify that, by
default, all AJAX requests should be sent to ajax.php using POST and then loaded into the paragraph with
ID bar, the following would be used:
$.ajaxSetup({
"type":"POST",
"url":"ajax.php",
"success":function(data){
$("#bar")
.css("background","yellow")
.html(data);
}
});
Now, new AJAX requests can be made easily by simply passing new data:
$.ajax({
"data":{
"newvar1":"value1",
"newvar2":"value2"
}
});