What happens when I click the Stop button on the browser?

Question

Let\'s say I click a button on a web page to initiate a submit request. Then I suddenly realize that some data I have provided is wrong and that if it gets submitted, then I

Answer 1

The client will immediately stop transmitting data and close its connection. 9 out of 10 times your request will already have got through (perhaps due to OS buffers being "flushed" to the server). No extra information is sent to the server informing it that you stopped your request.