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);- Please show your code.Lance– Lance2015-07-18 20:44:35 +00:00Commented Jul 18, 2015 at 20:44
- 1possible duplicate of stackoverflow.com/questions/3490331/…Tushar Gupta– Tushar Gupta2015-07-18 20:50:52 +00:00Commented Jul 18, 2015 at 20:50
- 2Possible duplicate of Is it possible to trigger the onbeforeunload event programmatically?Brilliand– Brilliand2018-08-10 23:07:39 +00:00Commented Aug 10, 2018 at 23:07
- Note: The above mentioned articles refer to jQuery based solutions.Thomas Williams– Thomas Williams2019-11-08 11:02:25 +00:00Commented Nov 8, 2019 at 11:02
Add a comment |
2 Answers
window.dispatchEvent(new Event('beforeunload')) I think this would be the best way in 2020. In case anyone finds this.
window.addEventListener('beforeunload',()=>{console.log("beforeunload triggered")}) window.dispatchEvent(new Event('beforeunload')) 
Comments
Either use
object.onunload=function(){myScript}; or the addEventListener() method:
object.addEventListener("unload", myScript); to trigger the event use object.unload();
2 Comments
Alex
Given the case that we have
window.onbeforeunload=function(){return "you are leaving";} , if I call window.onbeforeunload, no alert box would pop up, but if I call window.location = 'http://someotherdomain.com' which will eventually trigger onbeforeunload, I see a pop up with the string "you are leaving". So is there a way to simulate leaving a page completely as it happens when we close a window?!(obviously I'm not looking for window.close())
Stephen Lujan
I think the question is about programmatically triggering the browser confirmation that onbeforeunload creates. This answer doesn't really accomplish that.