$.ajax use of the detailed

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

$.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. Examples:

1.$.ajax asynchronous requests with JSON data

var aj = $.ajax ({
URL: ' productmanager_reverseupdate ',//Jump to action
data:{
Selrollback:selrollback,
Seloperatorscode:seloperatorscode,
Provincecode:provincecode,
PASS2:PASS2},
Type: ' Post ',
Cache:false,
DataType: ' JSON ',
Success:function (data) {
if (data.msg = = "true") {
View ("Modified successfully! ");
Alert ("Modified successfully! ");
Window.location.reload ();
}else{
View (DATA.MSG);
}
},
Error:function () {
View ("Exception! ");
Alert ("Exception! ");
}
});

2.$.ajax asynchronous requests that serialize the contents of a table to a string

function Notips () {
var Formparam = $ ("#form1"). Serialize ();//serialization of table contents as strings
$.ajax ({
Type: ' Post ',
URL: ' Notice_notipsnotice ',
Data:formparam,
Cache:false,
DataType: ' JSON ',
Success:function (data) {
}
});
}

3.$.ajax asynchronous requests for stitching URLs

var Yz=$.ajax ({
Type: ' Post ',
URL: ' validatepwd2_checkpwd2?password2= ' +password2,
data:{},
Cache:false,
DataType: ' JSON ',
Success:function (data) {
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
{
Textpassword2.html ("<font color= ' red ' > Business password is incorrect! </font> ");
$ ("#validatePassword2"). Val ("Pwd2error");
CheckPassword2 = false;
Return
}
},
Error:function () {}
});

4.$.ajax asynchronous request to splice data

$.ajax ({
URL: ' <%=request.getcontextpath ()%>/kc/kc_checkmernameunique.action ',
Type: ' Post ',
Data: ' Mername= ' +values,
Async:false,//default True Async
Error:function () {
Alert (' Error ');
},
Success:function (data) {
$ ("#" +divs). HTML (data);
}
});

Use of 5.done

$.ajax ({
Type: ' Get ',
Async:false,
Url:this.topUrl + ' sbjctdmninfo/queryvrsncd.action?rnd= ' + math.random ()
}). Done (function (data) {
if (Data.retcode = = ' 0000 ') {
AplnCommon.rightTreeSearchObj.dataVrsnId = Data.obj[0].vrsnid;
Func1 ();
}
});

$.ajax use of the detailed