4 Ajax asynchronous submission methods commonly used in extJS_extjs

/**

Copy code The code is as follows:

* The first Ajax submission method
* This This method requires direct use of the ext Ajax method for submission
* Using this method, the parameters to be passed need to be encapsulated
* @return
*/
function saveUser_ajaxSubmit1() {
Ext.Ajax.request( {
url : 'user_save.action',
method : 'post',
params : {
userName : document.getElementById('userName').value,
password : document.getElementById('password').value
},
success : function(response, options) {
var o = Ext.util.JSON.decode(response.responseText);
alert(o.msg);
},
failure : function() {
}
});
}
/**
* The second Ajax submission method
* This method will specify an html form for ext's ajax
* Using this method, there is no need to encapsulate the parameters to be passed
*
* @return
*/
function saveUser_ajaxSubmit2() {
Ext.Ajax.request( {
url : 'user_save.action',
method : 'post',
form : 'userForm', // 指定表单
success : function(response, options) {
var o = Ext.util.JSON.decode(response.responseText);
alert(o.msg);
},
failure : function() {
}
});
}
/**
* The third Ajax submission method
* This method will submit ext's own form
* Using this method, you need to use ext's own textField component
*
* @return
*/
function saveUser_ajaxSubmit3() {
// 定义表单
var formPanel = new Ext.FormPanel( {
labelWidth : 75,
frame : true,
bodyStyle : 'padding:5px 5px 0',
width : 350,
defaults : {
width : 230
},
defaultType : 'textfield',
items : [ {
fieldLabel : '用户名',
name : 'userName',
allowBlank : false
}, {
fieldLabel : '密 码',
name : 'password'
} ]
});
// 定义窗口
var win = new Ext.Window( {
title : '添加用户',
layout : 'fit',
width : 500,
height : 300,
closeAction : 'close',
closable : false,
plain : true,
items : formPanel,
buttons : [ {
text : '确定',
handler : function() {
var form = formPanel.getForm();
var userName = form.findField('userName').getValue().trim();
var password = form.findField('password').getValue().trim();
if (!userName) {
alert('用户名不能为空');
return;
}
if (!password) {
alert('密码不能为空');
return;
}
form.submit( {
waitTitle : '请稍后...',
waitMsg : '正在保存用户信息,请稍后...',
url : 'user_save.action',
method : 'post',
success : function(form, action) {
alert(action.result.msg);
},
failure : function(form, action) {
alert(action.result.msg);
}
});
}
}, {
text : '取消',
handler : function() {
win.close();
}
} ]
});
win.show();
}
/**
* The fourth Ajax submission method
* This method converts the html form into an ext form for asynchronous submission
* Using this method, you need to define the html form
*
* @return
*/
function saveUser_ajaxSubmit4() {
new Ext.form.BasicForm('userForm').submit( {
waitTitle : '请稍后...',
waitMsg : '正在保存用户信息,请稍后...',
url : 'user_save.action',
method : 'post',
success : function(form, action) {
alert(action.result.msg);
},
failure : function(form, action) {
alert(action.result.msg);
}
});
}