JQuery Ajax instances ($.ajax, $.post, $.get)

jquery is very well encapsulated in asynchronous commits, and it's very cumbersome to use Ajax directly, and jquery greatly simplifies our operations, regardless of the browser's surprise.

Recommend a good jquery Ajax instance article, forget to go to see, the address is:http://www.cnblogs.com/yeer/archive/2009/07/23/1529460.html and/http www.w3school.com.cn/jquery/

$.post, $.get is a simple method, if you want to deal with complex logic, still need to use the Jquery.ajax ()

I. General format of $.ajax

$.ajax ({

Type: ' POST ',

URL: URL ,

Data: data ,

Success: Success ,

DataType: dataType

});

Second, the parameter description of $.ajax

Parameter description

Url	Necessary. Specifies which URL to send the request to.
Data	Optional. The map or string value. Specifies the data that is sent to the server along with the request.
Success (data, Textstatus, JQXHR)	Optional. The callback function to execute when the request succeeds.
DataType	Optional. Specifies the data type of the expected server response. The default is to perform smart judgments (XML, JSON, script, or HTML).

three, $.ajax need to pay attention to some places:

There are three main ways of 1.data, HTML splicing, JSON array, form form is serialized by Serialize (), and no intelligent judgment is specified by datatype.

2.$.ajax only submits form in text mode, if the asynchronous commit contains <file> uploads are not passed over, you need to use Jquery.form.js $.ajaxsubmit

Iv. $.ajax Examples of my practical application

JS Code

2. 1.$.ajax asynchronous requests with JSON data
4. var aj = $.ajax ({
6. URL:' productmanager_reverseupdate ',//Jump to action
8. data:{
10. Selrollback:selrollback,
12. Seloperatorscode:seloperatorscode,
14. Provincecode:provincecode,
16. Pass2:pass2
18. },
20. Type:' post ',
22. Cache:false,
24. DataType:' json ',
26. Success:function (data) {
28. if (data.msg = ="true") {
30. //View ("Modified successfully!")    ");
32. Alert ("modified successfully!    ");
34. Window.location.reload ();
36. }else{
38. View (DATA.MSG);
40. }
42. },
44. Error: function () {
46. //view ("Exception!    ");
48. Alert ("Exception!    ");
50. }
52. });
58. 2.$.ajax asynchronous requests that serialize the contents of a table to a string
60. function Notips () {
62. var Formparam = $ ("#form1"). Serialize (); Serialize table contents as strings
64. $.ajax ({
66. Type:' post ',
68. URL:' notice_notipsnotice ',
70. Data:formparam,
72. Cache:false,
74. DataType:' json ',
76. Success:function (data) {
78. }
80. });
82. }
88. 3.$.ajax asynchronous requests for stitching URLs
90. var Yz=$.ajax ({
92. Type:' post ',
94. URL:' validatepwd2_checkpwd2?password2= ' +password2,
96. data:{},
98. Cache:false,
100. DataType:' json ',
102. Success:function (data) {
104. if (data.msg = ="false") //The server returns false to change the value of ValidatePassword2 to Pwd2error, which is asynchronous and takes into account the return time
106. {
108. Textpassword2.html ("<font color= ' red ' > Business password is incorrect!    </font> ");
110. $ ("#validatePassword2"). Val ("pwd2error");
112. CheckPassword2 = false;
114. return;
116. }
118. },
120. Error:function () {}
122. });
128. 4.$.ajax asynchronous request to splice data
130. $.ajax ({
132. URL:' <%=request.getcontextpath ()%>/kc/kc_checkmernameunique.action ',
134. Type:' post ',
136. Data:' mername= ' +values,
138. Async: false, //default is True async
140. Error:function () {
142. Alert (' error ');
144. },
146. Success:function (data) {
148. $ ("#" +divs). HTML (data);
150. }
152. });

JQuery Ajax instances ($.ajax, $.post, $.get)