How can I capture the right-click event in JavaScript?

Use the oncontextmenu event. Here’s an example: And using event listeners (credit to rampion from a comment in 2011): Don’t forget to return false, otherwise the standard context menu will still pop up. If you are going to use a function you’ve written rather than javascript:alert(“Success!”), remember to return false in BOTH the function AND the oncontextmenu attribute.

Why onbeforeunload event is not firing

The onbeforeunload event is not cancel-able, because of security reasons, but if an event handler function for the onbeforeunload event returns a string value, this text will be shown in a confirmation dialog box, where the user can confirm whether he wants to stay or leave the current page. Note that event listeners cannot be registered for the onbeforeunload event with the addEventListener and attachEvent methods (only … Read more