Simulate keypress that works in Google nav in Chrome

simulate_keypress.js

// Based on http://stackoverflow.com/a/10520017/1307721 and http://stackoverflow.com/a/16022728/1307721

Podium = {};

Podium.keydown = function(k) {
    var oEvent = document.createEvent('KeyboardEvent');

    // Chromium Hack
    Object.defineProperty(oEvent, 'keyCode', {
                get : function() {
                    return this.keyCodeVal;
                }
    });     
    Object.defineProperty(oEvent, 'which', {
                get : function() {
                    return this.keyCodeVal;
                }
    });     

    if (oEvent.initKeyboardEvent) {
        oEvent.initKeyboardEvent("keydown", true, true, document.defaultView, k, k, "", "", false, "");
    } else {
        oEvent.initKeyEvent("keydown", true, true, document.defaultView, false, false, false, false, k, 0);
    }

    oEvent.keyCodeVal = k;

    if (oEvent.keyCode !== k) {
        alert("keyCode mismatch " + oEvent.keyCode + "(" + oEvent.which + ")");
    }

    document.body.dispatchEvent(oEvent);
}

Podium.keydown(40); // for arrow-down, arrow-up is 38

very good, I lost my two hours in simulating arrow key for the Chrome browser. Jquery simulation won't work, this scripts works.

好活

Works great in chrome 81, thank you!

Works great in chrome 91, thank you!
I tried on dev console.

I wanted to simulate key "1" press.
so called Podium.keydown(49) on chrome 91. Did not work.
Even i tried enter key with code 13. it did not work. What could be wrong.
There is a webpage which does operations based on shortcut keys. So my requirement is to press "1".

Did not work dude this wrong and i do
fix it

looks good, how to pass element to it, for example a button with class 'the-btn'? thanks

Great! It's work! Thanks