JSFiddle - React, Tailwind, and code Playground

HTML

<button id="zoom">zoom</button>

<div id="log"></div>

JavaScript

$("#zoom").click(function() {

    var e = $.Event("keydown");
    e.which = 61; // # key code for +
    e.ctrlKey = true;
    $(document).trigger(e);

});

$(document).bind('keydown', function(e) {
    e.preventDefault();
    
    var d = new Date();
    $('#log').html(
        'time: ' + d.getTime() + '<br/>' +
        'key: ' + e.which + '<br/>' +
        'ctrl: ' + (e.ctrlKey ? 'Yes' : 'No')
    );
});