是否有任何跨浏览器的JavaScript/jQuery代码来检测浏览器或浏览器标签是否正在关闭，但不是由于链接被单击?
当前回答
在window的帮助下可以检查。在'unload'事件的事件处理程序中关闭，但超时使用是必需的(所以结果不能保证如果SMTH延迟或阻止窗口关闭):
JSFiddle的例子(测试在最新的Safari, FF, Chrome, Edge和IE11)
var win = window.open('', '', 'width=200,height=50,left=200,top=50');
win.document.write(`<html>
<head><title>CHILD WINDOW/TAB</title></head>
<body><h2>CHILD WINDOW/TAB</h2></body>
</html>`);
win.addEventListener('load',() => {
document.querySelector('.status').innerHTML += '<p>Child was loaded!</p>';
});
win.addEventListener('unload',() => {
document.querySelector('.status').innerHTML += '<p>Child was unloaded!</p>';
setTimeout(()=>{
document.querySelector('.status').innerHTML += getChildWindowStatus();
},1000);
});
win.document.close()
document.querySelector('.check-child-window').onclick = ()=> {
alert(getChildWindowStatus());
}
function getChildWindowStatus() {
if (win.closed) {
return 'Child window has been closed!';
} else {
return 'Child window has not been closed!';
}
}
其他回答
正如@jAndy提到的，没有合适的javascript代码来检测一个窗口正在关闭。 我从@Syno的提议开始。
我曾经遇到过类似的情况，只要你遵循这些步骤，你就能发现它。 我在Chrome 67+和Firefox 61+上进行了测试。
var wrapper = function () { //ignore this
var closing_window = false;
$(window).on('focus', function () {
closing_window = false;
//if the user interacts with the window, then the window is not being
//closed
});
$(window).on('blur', function () {
closing_window = true;
if (!document.hidden) { //when the window is being minimized
closing_window = false;
}
$(window).on('resize', function (e) { //when the window is being maximized
closing_window = false;
});
$(window).off('resize'); //avoid multiple listening
});
$('html').on('mouseleave', function () {
closing_window = true;
//if the user is leaving html, we have more reasons to believe that he's
//leaving or thinking about closing the window
});
$('html').on('mouseenter', function () {
closing_window = false;
//if the user's mouse its on the page, it means you don't need to logout
//them, didn't it?
});
$(document).on('keydown', function (e) {
if (e.keyCode == 91 || e.keyCode == 18) {
closing_window = false; //shortcuts for ALT+TAB and Window key
}
if (e.keyCode == 116 || (e.ctrlKey && e.keyCode == 82)) {
closing_window = false; //shortcuts for F5 and CTRL+F5 and CTRL+R
}
});
// Prevent logout when clicking in a hiperlink
$(document).on("click", "a", function () {
closing_window = false;
});
// Prevent logout when clicking in a button (if these buttons rediret to some page)
$(document).on("click", "button", function () {
closing_window = false;
});
// Prevent logout when submiting
$(document).on("submit", "form", function () {
closing_window = false;
});
// Prevent logout when submiting
$(document).on("click", "input[type=submit]", function () {
closing_window = false;
});
var toDoWhenClosing = function() {
//write a code here likes a user logout, example:
//$.ajax({
// url: '/MyController/MyLogOutAction',
// async: false,
// data: {
// },
// error: function () {
// },
// success: function (data) {
// },
//});
};
window.onbeforeunload = function () {
if (closing_window) {
toDoWhenClosing();
}
};
};
简单的解决方案
window.onbeforeunload = function () {
return "Do you really want to close?";
};
没有事件，但是有一个属性窗口。在撰写本文时，所有主要浏览器都支持关闭。因此，如果您确实需要了解，可以轮询窗口以检查该属性。
如果(myWindow.closed){做事}
注意: 轮询任何东西通常都不是最佳解决方案。窗外。如果可能的话，应该使用Onbeforeunload事件，唯一的警告是，如果您导航离开，它也会触发。
试试这个, 我相信这对你有用。
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type='text/javascript'>
$(function() {
try{
opera.setOverrideHistoryNavigationMode('compatible');
history.navigationMode = 'compatible';
}catch(e){}
function ReturnMessage()
{
return "wait";
}
function UnBindWindow()
{
$(window).unbind('beforeunload', ReturnMessage);
}
$(window).bind('beforeunload',ReturnMessage );
});
</script>
我找到了一个方法，在我所有的浏览器上都能运行。
测试在以下版本: Firefox 57, Internet Explorer 11, Edge 41，最新的Chrome浏览器之一(无法显示我的版本)
注意:onbeforeunload火灾如果你离开页面以任何可能的方式(刷新，关闭浏览器，重定向，链接，提交..)。如果只希望它在浏览器关闭时发生，只需绑定事件处理程序。
$(document).ready(function(){
var validNavigation = false;
// Attach the event keypress to exclude the F5 refresh (includes normal refresh)
$(document).bind('keypress', function(e) {
if (e.keyCode == 116){
validNavigation = true;
}
});
// Attach the event click for all links in the page
$("a").bind("click", function() {
validNavigation = true;
});
// Attach the event submit for all forms in the page
$("form").bind("submit", function() {
validNavigation = true;
});
// Attach the event click for all inputs in the page
$("input[type=submit]").bind("click", function() {
validNavigation = true;
});
window.onbeforeunload = function() {
if (!validNavigation) {
// -------> code comes here
}
};
});
