onbeforeunload

问题 I'm using window.onbeforeunload to display a message to the user on windows close, the function works well with chrome and IE but it doesn't work with Firefox, i'm using firefox version 26.0 i have tried many but with no mean, somebody said that its a bug in firefox as in this post and another suggests some solutions as in this post i tried all the solutions available using javascript and jquery but it doesn't work, now i display a confirm dialog but the browser default dialog appears after

问题 Is there an alternative method to use instead of onbeforeunload in mobile-safari? I've noticed that Google was able to capture the onbeforeunload event in mobile-safari. Has anyone figured out how they are doing so? Google was able to do so using their gmail client. Create a new message... type something in the text area... hit the browser back button. It pops up a warning message. I used an iPad to do my test. 回答1: I would guess that they are using the History API. By listening to popstate

问题 Does window.onbeforeunload() fire in all browsers? I need a onbeforeunload functionality which is supported at least by IE6 and FF3.6. For IE, onbeforeunload() seems only to be supported by IE9 回答1: I found a workaround for Firefox with setTimeout function because it does not have the same behaviour as other web browsers. window.onbeforeunload = function (e) { var message = "Are you sure ?"; var firefox = /Firefox[\/\s](\d+)/.test(navigator.userAgent); if (firefox) { //Add custom dialog /

问题 Does window.onbeforeunload() fire in all browsers? I need a onbeforeunload functionality which is supported at least by IE6 and FF3.6. For IE, onbeforeunload() seems only to be supported by IE9 回答1: I found a workaround for Firefox with setTimeout function because it does not have the same behaviour as other web browsers. window.onbeforeunload = function (e) { var message = "Are you sure ?"; var firefox = /Firefox[\/\s](\d+)/.test(navigator.userAgent); if (firefox) { //Add custom dialog /

问题 Does window.onbeforeunload() fire in all browsers? I need a onbeforeunload functionality which is supported at least by IE6 and FF3.6. For IE, onbeforeunload() seems only to be supported by IE9 回答1: I found a workaround for Firefox with setTimeout function because it does not have the same behaviour as other web browsers. window.onbeforeunload = function (e) { var message = "Are you sure ?"; var firefox = /Firefox[\/\s](\d+)/.test(navigator.userAgent); if (firefox) { //Add custom dialog /

问题 I was using this snippet for almost 2 years. It was fine then, until I saw it was not working today on Google Chrome version 51.0.2704.103m . $(window).on('beforeunload', function () { return "Are you sure you want to exit this page?"; }); It doesn't show my custom message but instead just show: Changes you made may not be saved. Is overriding onbeforeunload message is still supported on our browsers? Because this issue is same with Mozilla Firefox version 47.0.1 . Or, am I doing it wrong?

问题 I have an ajax based application (ie no page 'reloads` when getting new data). Initially I wanted to find a way to prevent navigation when unsaved data was present on a form. I came across window.onbeforeunload . That didn't work when clicking a links (where content is loaded via ajax and pop/push state changes the url). I added some handling of the a links but need to use the default window.onbeforeunload to cover the standard means of leaving a page (ie manually entering a new URL or using

问题 I have an ajax based application (ie no page 'reloads` when getting new data). Initially I wanted to find a way to prevent navigation when unsaved data was present on a form. I came across window.onbeforeunload . That didn't work when clicking a links (where content is loaded via ajax and pop/push state changes the url). I added some handling of the a links but need to use the default window.onbeforeunload to cover the standard means of leaving a page (ie manually entering a new URL or using

问题 I am having some trouble with the on before unload and the unload method. I thought i set the code right in terms of the onload method only firing up after the confirm method for onbeforeunload was set a true. but sadly that isn't the case, what is happening is the unload method is starting even if the onbeforeunload method is set to false and the person wants to stay at the website. Here is the code I am working on it has changed a lot since I started hope its okay. I am sure it isn't since

问题 How can I programmatically trigger onbeforeunload and onunload events?(No jquery please). I've tried: var event = new Event('onbeforeunload'); event.initEvent("onbeforeunload", true, true); window.document.dispatchEvent(event); 回答1: Either use object.onunload=function(){myScript}; or the addEventListener() method: object.addEventListener("unload", myScript); to trigger the event use object.unload(); 回答2: window.dispatchEvent(new Event('beforeunload')) I think this would be the best way now.