Prevent possible duplicate email sending. #143

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opened 2025-10-14 16:30:54 -06:00 by navan · 0 comments

navan commented

2025-10-14 16:30:54 -06:00

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Originally created by @tarasyarema on 2/24/2019

I was getting duplicate email sending so I figured out that if you do the XHR request sync you will only send it once for sure [1]. In addition, I added a conditional statement inside the XHR callback so you only hide the form + show the thank you message when the request is achieved correctly [2].

Reference:
[1] XMLHttpRequest: xhr.open
[2] MDN web docs: xhr.onreadystatechange

*Originally created by @tarasyarema on 2/24/2019* I was getting duplicate email sending so I figured out that if you do the XHR request sync you will only send it once for sure [1]. In addition, I added a conditional statement inside the XHR callback so you only hide the form + show the thank you message when the request is achieved correctly [2]. Reference: [1] [XMLHttpRequest: xhr.open](https://xhr.spec.whatwg.org/#the-open()-method) [2] [MDN web docs: xhr.onreadystatechange](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/onreadystatechange)