i'm currently developing a web application and i encounter a problem.
As you might know or not, chrome has a feature that gives <input> (especially text inputs) an "undo" function when you hit CTRL+Z and "redo" with CTRL+Y it may seem like a good feature in normal websites, but currently i'm making an image editor that also uses those keyboard shortcuts (CTRL+Z & CTRL+Y).
in my app i also have a text input, so when i change the text input's content and then hit CTRL+Z to undo the changes in my image editor, it would undo the change in the text editor instead!
here is a Codepen that would demonstrate the effect
(instruction is in the Codepen)
So in conclusion i want to remove the undo/redo function in chrome how can i do that?
var ctrlDown = false;
var ctrlKey = 17, vKey = 86, cKey = 67, zKey = 90;
document.body.onkeydown = function(e) {
if (e.keyCode == 17 || e.keyCode == 91) {
ctrlDown = true;
}
if ((ctrlDown && e.keyCode == zKey) || (ctrlDown && e.keyCode == vKey) || (ctrlDown && e.keyCode == cKey)) {
e.preventDefault();
return false;
}
}
document.body.onkeyup = function(e) {
if (e.keyCode == 17 || e.keyCode == 91) {
ctrlDown = false;
};
};<body>
<input type='text' value='test' />
</body>Does this work?
You could use onkeydown event, and preventDefault.. eg.
document.onkeydown = function(e) {
if (e.ctrlKey && e.key === 'z') {
e.preventDefault();
alert("CTRL + Z!");
}
}
来源：https://stackoverflow.com/questions/39802159/disable-chromes-text-input-undo-redo-ctrlz-ctrly