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let form;
let unsavedChanges = false;
window.onload = () => {
form = document.getElementById('update');
let inputs = form.elements;
for (i = 0; i < inputs.length; i++) {
inputs[i].onchange = changeHandler;
inputs[i].oninput = changeHandler;
}
form.onsubmit = submitHandler;
window.onkeydown = keyboardHandler;
window.onbeforeunload = confirmExit;
};
/**
* Manage a keyboardEvent
* @param {KeyboardEvent} e
*/
function keyboardHandler(e) {
if (e.composed) {
if (e.ctrlKey) {
// console.log(e.key);
switch (e.key) {
case 's':
e.preventDefault();
unsavedChanges = false;
form.submit();
return false;
}
}
}
}
/**
* Manage change event
* @param {Event} e
*/
function changeHandler(e) {
unsavedChanges = true;
// console.log({unsavedChanges});
}
/**
* Manage submit event
* @param {Event} e
*/
function submitHandler(e) {
unsavedChanges = false;
}
/**
* Manage a beforeUnloadEvent
* @param {BeforeUnloadEvent} e
*/
function confirmExit(e) {
// console.log({unsavedChanges});
if (unsavedChanges) {
return "You have unsaved changes, do you really want to leave this page?";
}
}
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