Javascript onbeforeunload函数 [英] Javascript onbeforeunload function
本文介绍了Javascript onbeforeunload函数的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试在onbeforeunload事件上调用此确认函数，但未调用它.我在这里想念什么?
我在body标签中称呼它:<body onbeforeunload="confirmation();">
我也尝试过:<body onbeforeunload="return confirmation();">
Folks I am trying to call this confirmation function on onbeforeunload event but its not getting called. What am I missing here?
I am calling this inside the body tag: <body onbeforeunload="confirmation();">
I also tried: <body onbeforeunload="return confirmation();">
代码:
function confirmation(){
var answer = confirm('You have unsaved changes!!');
if(answer == true)
{
alert('Bye Bye!!!');
}
else{
alert('You are staying');
return false;
}
}
推荐答案
onbeforeunload 有效，并且代码中包含语法错误.
That's not remotely how onbeforeunload works, and the code contains syntax errors.
window.onbeforeunload = function (e)
{
var e = e || window.event,
message = 'You have unsaved changes!!';
// For IE and Firefox prior to version 4
if (e)
{
e.returnValue = message;
}
return message;
}
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