Enhance user experience friendliness jquery easyui window prompt when the window is closed_jquery

My pop-up window is written like this

Copy code The code is as follows:

$('# aa').click(function(){ //Button click event
　$('#w').window({//Window initialization
　title:'Just click',width:400,height: 300,iconCls:'icon_add',
//Important part
onBeforeClose:function(){ //Events triggered before the panel is closed
if (confirm('The window is closing, please confirm your current The action has been saved. Do you want to continue closing the window? ')) {
　　　　$('#w').window('close', true); //The close method is called here, true means that the onBeforeClose callback function is ignored when the panel is closed.
　　　} else
　　　　　 return false;
　　}
　});
}); When clicking the button of the class, the confirm window will pop up. Click OK to close the window, and click Cancel to keep the window.
If you don’t want the prompt to pop up, just call: $('#w').window('close', true)