类Ext.MessageBox

用来生成不同样式的消息框的实用类。还可以使用它的别名Ext.Msg。Utility class for generating different styles of message boxes. The alias Ext.Msg can also be used.


需要注意的是 MessageBox 对象是异步的。不同于 JavaScript中原生的alert（它会暂停浏览器的执行），显示 MessageBox 不会中断代码的运行。由于这个原因，如果你的代码需要在用户对 MessageBox 做出反馈之后执行，则必须用到回调函数（详情可见show方法中的function参数）。Note that the MessageBox is asynchronous. Unlike a regular JavaScript alert (which will halt browser execution), showing a MessageBox will not cause the code to stop. For this reason, if you have code that should only run after some user feedback from the MessageBox, you must use a callback function (see the function parameter for show for more details).

用法示例：Example usage:


// 基本的通知： Basic alert:
Ext.Msg.alert('Status', 'Changes saved successfully.');

// 提示用户输入数据并使用回调方法进得处理： Prompt for user data and process the result using a callback:
Ext.Msg.prompt('Name', 'Please enter your name:', function(btn, text){
if (btn == 'ok'){
// process text value and close...
}
});

// 显示一个使用配置选项的对话框： Show a dialog using config options:
Ext.Msg.show({
title:'Save Changes?',
msg: 'You are closing a tab that has unsaved changes. Would you like to save your changes?',
buttons: Ext.Msg.YESNOCANCEL,
fn: processResult,
animEl: 'elId',
icon: Ext.MessageBox.QUESTION
});