JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="foo">
<input type="text" id="bar">

JavaScript

var cmdDown = false;
$('#foo')
    .keydown(function(_e) {
        if(_e.keyCode == 91)
            cmdDown = true;
        
        if(cmdDown && _e.keyCode == 37)
            console.log('cmd + left'); 
        
        console.log('Keydown: ' + _e.keyCode);
    })
    .keyup(function(_e) {
        if(_e.keyCode == 91)
            cmdDown = false;
        
        console.log('Keyup: ' + _e.keyCode);
    })
    .focus();

// just to confirm that this isn't because of jQuery event binding
var bar = document.getElementById('bar');
bar.addEventListener('keydown', function(_e) {
    console.log('Keydown: ' + _e.keyCode);
});
bar.addEventListener('keyup', function(_e) {
    console.log('Keyup: ' + _e.keyCode);
});