Searches for autocomplete attributes in the page and sets the value to on.
// ==UserScript==
// @name Autocomplete On
// @namespace https://greasyfork.org/en/scripts/4256-autocomplete-on
// @description Searches for autocomplete attributes in the page and sets the value to on.
// @include *
// @grant none
// @noframes
// @version 13.0
// ==/UserScript==
function enableAutocomplete()
{
/* Get all autocomplete attributes */
var nodeSnapshot = document.evaluate('//*[@autocomplete]', document, null,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null),
numNodeValues = nodeSnapshot.snapshotLength - 1,
focusedAndBlurred = false,
formNode = null,
numFormElements = 0,
scrollX = window.pageXOffset,
scrollY = window.pageYOffset,
activeElement = document.activeElement;
/* Loop through all the attributes found in the snapshot */
for (var i = numNodeValues; i >= 0; i--) {
/*
Get the attribute snapshot object and
Change the attribute value to "on"
*/
nodeSnapshot.snapshotItem(i).setAttribute('autocomplete', 'on');
/* If element is of type text and autocomplete is set, it's probably the username */
if (nodeSnapshot.snapshotItem(i).getAttribute('type') == 'text') {
/*
Blurring and focusing allows gecko to make suggestions
immediately when double clicking username
*/
nodeSnapshot.snapshotItem(i).focus();
nodeSnapshot.snapshotItem(i).blur();
focusedAndBlurred = true;
}
/* Remember the form node if autocomplete was set on it */
if (nodeSnapshot.snapshotItem(i).nodeName.toLowerCase() == 'form') {
formNode = nodeSnapshot.snapshotItem(i);
numFormElements = formNode.elements.length - 1;
}
}
/*
If formNode was set and username was not focused and blurred,
then autocomplete was only set on the form node
*/
if (formNode != null && ! focusedAndBlurred) {
for (var i = numFormElements; i >= 0; i--) {
/* Blur and focus every text field in the form ending with the first field */
if (formNode.elements[i].getAttribute('type') == 'text') {
formNode.elements[i].focus();
formNode.elements[i].blur();
focusedAndBlurred = true;
}
}
}
/*
If form fields were focused and blurred, return to the original
scroll position and refocus the active element
*/
if (focusedAndBlurred) {
activeElement.focus();
/*
Create a slight delay before scrolling back to the first scroll position
since executing it immediately sometimes doesn't work
*/
setTimeout(() => {
window.scrollTo(scrollX, scrollY);
}, '1');
}
}
function newSubmit()
{
enableAutocomplete();
if (this._submit !== undefined) {
this._submit();
}
}
/* Override DOM submit */
HTMLFormElement.prototype._submit = HTMLFormElement.prototype.submit;
HTMLFormElement.prototype.submit = newSubmit;
/* Run enable on form submit and page load */
window.addEventListener('submit', newSubmit, true);
window.addEventListener('load', enableAutocomplete, false);