Web1 okt. 2008 · On the very first page visit, we don't actually know yet if beforeunload is supported. But on that very first page, we set up both an unload and a beforeunload handler. If the beforeunload handler fires, we set a flag saying that beforeunload is supported (actually beforeunloadSupported = "yes" ). Web这几个事件最早出现于IOS safari中，为了向开发人员转达一些特殊的信息，所以新增了这些事件，随着Android中的webkit的加入，慢慢地这样的专有事件成了事实的标准，从而导致W3C开始指定Touch Event规范的内容。 touchstart 手指触摸屏幕时触发，即…

Javascript 在IOS设备中未触发beforeunload事件_Javascript_Ios - 多 …

Web在Chrome和Firefox中，页面加载完成后，如果用户未对页面进行操作，比如“点击”、“输入”等等，onbeforeunload将不会被执行。. 而在Safari中onbeforeunload总是会被执行。. … Web12 mrt. 2014 · lfjeff commented on Mar 12, 2014 Only run code if it's on a platform with known beforeunload "issues". Run code to intercept links (using your methods) and also form submits. Raise a custom event $ (window).trigger ('are-beforeunload') when a navigation event is detected. The shim manages the dialog and navigation exit. diamond family spa in rowland heights

javascript - onbeforeunload support detection - Stack Overflow

http://www.duoduokou.com/javascript/16136434622493520882.html WebWindow: beforeunload event 当浏览器窗口关闭或者刷新时，会触发 beforeunload 事件。 当前页面不会直接关闭，可以点击确定按钮关闭或刷新，也可以取消关闭或刷新。 事件 … Webwindow.onbeforeunload = function (event) { return 'test'; } window.onbeforeunload = function (event) { alert ('test')'; } All of these work on FF and Safari on the PC, but not on the iPad. … circular formation army