单击浏览器/选项卡的关闭按钮时，请确认框

问题描述

大家好
当用户单击浏览器关闭按钮时，我需要进行编码以创建确认警报消息.....

Javascript编码对我更有用....

谁能帮我.

Hello to all
I need coding to create confirm alert message when user clicks a browser close button..........

Javascript coding is more helpful to me....

Can anyone help me.

推荐答案

window.onunload = function () {
           var r = confirm( "Press a button!" )
           if ( r == true ) {
               alert( "You pressed OK!" )
           }
           else {
               alert( "You pressed Cancel!" )
           }

       };

参见参考资料

window.onunload

see reference

window.onunload

<input type="submit" value="Show" onclick="if(confirm('Are you sure ,You want to delete this?')){return true;}else{return false;}" />

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