examples:
例如：请test.php教程网页，但忽略了返回结果。

$.post("test.php");

example:

request the test.php page and send some additional data along (while still ignoring the return results).
请求test.php网页，发送一些额外的数据沿（同时仍忽略了返回结果）。
$.post("test.php", { name: "john", time: "2pm" } );

example: pass arrays of data to the server (while still ignoring the return results).
$.post("test.php", { 'choices[]': ["jon", "susan"] });

example: send form data using ajax requests
$.post("test.php", $("#testform").serialize());

example: alert out the results from requesting test.php (html or xml, depending on what was returned).
$.post("test.php", function(data){
   alert("data loaded: " + data);
 })

;example: alert out the results from requesting test.php with an additional payload of data (html or xml, depending on what was returned).
$.post("test.php", { name: "john", time: "2pm" },
   function(data){
     alert("data loaded: " + data);
   });example: gets the test.php page content, store it in a xmlhttpresponse object and applies the process() 网页特效 function.
$.post("test.php", { name: "john", time: "2pm" },
   function(data){
     process(data);
   }, "xml");

example: gets the test.php page contents which has been returned in json format ()
$.post("test.php", { "func": "getnameandtime" },
   function(data){
     alert(data.name); // john
     console.log(data.time); //  2pm
   }, "json");