I am making an application in PHP that by selecting a given the combobox regarding the vessel and a date field, do a SELECT in the bank returning some data that is entered in a table.
I would like the user to select the boat (1) and by some case press the button F5 (upgrade) [2] the system calls a function.
I did a search for this functionality in JavaScript, but I did not find it.
To get more visual, follow my screen.
The JavaScript event that is called before reloading the page by F5 is beforeunload . I tested the code below and it worked with Jquery 3.3.1 . Note: some events such as alert are blocked in this event for security reasons.
window.addEventListener("beforeunload", function(event) {
$.ajax({
async: false,
url: 'teste.php',
data: { dados: "teste"},
method: "POST"
});
return true;
});