We’ll occasionally send you account related emails. I have solved this from testing process. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. For example: Internet Explorer does not respect the null return value and will display this to users as "null" text.
Get the latest and greatest from MDN delivered straight to your inbox. The HTML specification states that authors should use the Event.preventDefault() method instead of using Event.returnValue to prompt the user. Otherwise we can just use the
Get the latest and greatest from MDN delivered straight to your inbox. If Seems like its become standard functionality for this event to fire WHEN an element is changed, not after it … fixed, then for clicking on detached checkboxes we would have to use However note that not all browsers support this method, and some instead require the event handler to implement one of two legacy methods: Some browsers used to display the returned string in the confirmation dialog, enabling the event handler to display a custom message to the user. IE and Chrome have the Isn't jQuery supposed to fix browser incompatibilities after all?
And the issue is not also just Firefox specific, the behavior is different
MouseEvent('click'). For a more verbose approach (which works with Internet Explorer), see the old-fashioned waybelow. Attaching an event handler/listener to window or document 's beforeunload event prevents browsers from using in-memory page navigation caches, like Firefox's Back-Forward cache or WebKit's Page … Events can be created with the Eventconstructor as follows: The above code example uses the EventTarget.dispatchEvent()method.
https://github.com/mdn/browser-compat-data, Unloading Documents — Prompt to unload a document, Remove Custom Messages in onbeforeload Dialogs after Chrome 51. returning a string from the event handler.
Typically, it is better to use window.addEventListener() and the beforeunload event, instead of onbeforeunload.
There
It's interesting that using MouseEvent works differently.
it works for once only. Moreover, some don't display them at all. See the HTML specification for more details. The workaround to set checked is to use .attr("checked", "checked") or .prop("checked", true).
Looks like this should not have been closed. #2245 (comment). @dmethvin could you take a look here? To combat unwanted pop-ups, browsers may not display prompts created in beforeunload event handlers unless the page has been interacted with, or may even not display them at all. The compatibility table on this page is generated from structured data.
You have to use undefined to skip the prompt. If user interact with page after that user confirm message appear.
Successfully merging a pull request may close this issue. Only Chrome works, in IE the 'click' event is not dispatched at all, in Firefox the event is dispatched but the 'checked' property is not properly updated.
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