altKey is not defined.

[ghost]

#2655

                const term = new xterm.default.Terminal({ cursorBlink: true });
		const fitAddon = new xtermAddonFit.FitAddon();
		term.loadAddon(fitAddon);
		term.open(document.getElementById('term'));
		term.writeln('Terminal: ');
		term.writeln('');
		term.prompt = function () {
			term.write('\r\n' + '$: ');
		};
		term.prompt();
		term.onKey(function (key, ev) {
			console.log(ev)
			var printable = (
				!ev.altKey && !ev.altGraphKey && !ev.ctrlKey && !ev.metaKey
			);

			if (ev.keyCode == 13) {
				term.prompt();
			} else if (ev.keyCode == 8) {
				// Do not delete the prompt
				if (term.x > 2) {
					term.write('\b \b');
				}
			} else if (printable) {
				term.write(key);
			}
		});

		term.paste('paste', function (data, ev) {
			term.write(data);
		});
		const socket = new WebSocket('ws://localhost:8000/')
		term.loadAddon(attachAddon);
		const attachAddon = new attachAddon(socket)
		fitAddon.fit();

output when I press any button:

I'm not sure, what is problem.

[Tyriar]

onKey's has an object as the first param, not 2 params.

xterm.js/typings/xterm.d.ts

Line 641 in 1913e95

onKey: IEvent<{ key: string, domEvent: KeyboardEvent }>;

Do this instead:

term.onKey(function (ev) {
			console.log(ev.key);
			console.log(ev.domEvent)

[ghost]

my onKey function look now like this:

term.onKey(function (ev) {
			var printable = (
				!ev.altKey && !ev.altGraphKey && !ev.ctrlKey && !ev.metaKey
			);

			if (ev.keyCode == 13) {
				term.prompt();
			} else if (ev.keyCode == 8) {
				// Do not delete the prompt
				if (term.x > 2) {
					term.write('\b \b');
				}
			} else if (printable) {
				term.write(ev.key);
			}
		});

but when I write command and press enter, it doesn't create new line in output.
I tried to add term.writeln(''); to if (ev.Keycode == 13)

same with backspace (keyCode 8)..

other things work fine.

[Tyriar]

If you want to write things to the terminal, the recommended way it to listening to onData instead which gives you a string containing serialized keystrokes. Stack Overflow would be a better place for these sorts of questions.