I am working on a form that submits data to a JSP page with Java code.
<form method="POST" id="form1" action"<%=login%>">
<input id="btn" type="submit" value="Log in" />
However, I have observed that if the user holds down the enter button or presses the login button multiple times, it creates new sessions and requests each time. Is there a way to prevent this behavior while waiting for a server response?
Thank you!
One way to handle this situation is by invoking the JSP page using an AJAX call. This approach allows you to update content on the page without having to reload it. You can achieve this by attaching an EventListener to the form element:
document.getElementById("form1").addEventListener("submit", event => {
event.preventDefault();
document.getElementById("btn").disabled = true;
// Perform AJAX request here
});
After the AJAX request completes, remember to re-enable the button by setting its disabled attribute to false.
To avoid the action from occurring multiple times, you need to detect it as soon as possible
document.querySelector("#form1").addEventListener("submit", function(e) {
if (this.dataset.active) {
e.preventDefault;
return;
}
this.dataset.active = 'true';
});
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