That being said, in most cases, this would suffice. Even though we have placed extra measures to ensure accurate results, there is still a possibility that we might miss it. We say probably in the third point because our bottleneck is the client’s hardware performance. If the tab count is decreased AND the storage time difference is less than 50ms, the user probably closed the browser.If the tab count is decreased, the user closed a tab.If navigation entries have reload navigation type, the user reloaded the page.Conclusionīased on what we saw so far, we can boil our detection method to 3 points: In case of really poor client hardware performance, the worst-case scenario is that every beforeunload event would be detected as a tab close. This little trick also reduces the probability that we will miss the browser close event due to the client’s poor hardware performance. Angular Example for beforeunload event handler ) beforeunloadHandler(event): void However, for most of the applications, we need to distinguish between a ‘close’ (tab or window) and a ‘reload’. It is enough if you are looking for just that. This means this event will be triggered whenever the user either reloads the page, closes the tab or the browser window. This event is called whenever the resources are removed/unloaded from the client. JavaScript provides an event handler called beforeunload. For example, the following will close the current window/tab. If you are using another framework or JavaScript in general, the syntax would vary but the theory remains the same. To close a window or tab that was opened using JavaScript, call window.close (). The examples I will be showing below are using Angular 10. In this article, you will learn a way to detect page reload, tab close and browser close actions effectively and also distinguish between them. I was surprised to find that there is no straightforward way to do so. In JavaScript/TypeScript, however, there is no direct/standard way to identify whether the user has closed a tab and/or the browser window. It could be clearing cookies or sending an API call. SImilarly onClicking the “Click here to close the window” button we are calling function which uses the close() method in javascript to close the opened window.Sometimes, you need to do something right before the user closes a tab. In this function it links the website using the window.open() method in javascript. In function openW() we have passed the website link and the window width and height which is assigned to the variable win. In The above code there are two buttons “Click to open website”, which calls a function onClick i.e openW(). Perform database operation before close the browser (without alert) Here, we will use the addEventListener () method to handle the beforeunload event to detect browser close. Win = window.open("", "_blank", "width=900, height=786") Way to detect browser or tab close event Perform database operation before close the browser (without alert) Show alert before close/reload the tab or browser 1. Here we are using close() method from JavaScript to close current tab. Using JavaScript we can open and close current tab in a browser window with JavaScript. How to close the current tab in a browser window using JavaScript
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