Send "1337" on 13:37 to a selected WhatsApp chat, Run the code in your console

WhatsAppSender1337.js

function sendMessage(message) {
    window.InputEvent = window.Event || window.InputEvent;

    var event = new InputEvent('input', {
        bubbles: true
    });

    var textbox = document.querySelector('div._3FRCZ');

    textbox.textContent = message;
    textbox.dispatchEvent(event);

    document.querySelector("button._1U1xa").click();
}


function addZero(i) {
    if (i < 10) {
        i = "0" + i;
    }
    return i;
}


var startCheck = setInterval(checkTime, 1000);

function checkTime() {

    var d = new Date();
    var h = addZero(d.getHours());
    var m = addZero(d.getMinutes());
    var s = addZero(d.getSeconds());

    console.log(h + ":" + m + ":" + s);

    if (h === 13 && m === 37) {
        sendMessage("1337");
        console.log("Message is successfully sent ");
        clearInterval(startCheck);
    }


}