CODEWITHSUNDEEP
javascriptajax
Grodriguez
Grodriguez

Reputation: 22015

Detect Ajax request interrupted by user action

I want to detect cases where an Ajax call is in progress and then it is interrupted due to some user action (e.g. user navigating to another page)?

I can see that when this happens my onreadystatechange handler gets called with readyState == 4 (DONE) and status == 0.

The question is, is there any way to be sure that this really corresponds to the described scenario (request aborted due to user action)? I want to avoid masking other -potentially more dangerous- errors.

Upvotes: 3

Views: 971

Answers (2)

zaf
zaf

Reputation: 23264

For the user navigating to another page you could use the onbeforeunload event.

For example:

window.onbeforeunload = function() {
    // Check ajax request state and do something accordingly...
}

Upvotes: 3

Daniel
Daniel

Reputation: 609

You could set a variable (boolean) when the user fires the ajax request. Set it back in a callback function. If the user leaves the page, you could check this variable.

Upvotes: 1

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