'Handle refresh page event with JavaScript

Is it possible to use JavaScript to handle the event of refreshing page? What I want is get notice if user do one of these behaviours:

refresh page by pressing F5
close tab or browser
enter a new url then press enter on browser

to display a warning message?

javascript dom-events

Solution 1:^[1]

The closest you could get is the window.onbeforeunload event:

window.onbeforeunload = function (e) {
    var e = e || window.event;

    // For IE and Firefox
    if (e) {
        e.returnValue = 'Leaving the page';
    }

    // For Safari
    return 'Leaving the page';
};

It is important to note that you need to return a string from this function.

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Solution 1	Darin Dimitrov

'Handle refresh page event with JavaScript

Solution 1:[1]

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Related Questions

Solution 1:^[1]