function simulateMouseEvents(element, eventName)

{

    var mouseEvent = document.createEvent('MouseEvents');

    mouseEvent.initEvent(eventName, true, true);

    element.dispatchEvent(mouseEvent);

}

/*Schedule your message section starts here

var now = new Date();

// Replace Hours, Mins and secs with your 

// desired time in 24 hour time format e.g.

// var rt = new Date(now.getFullYear(), now.getMonth(), 

// now.getDate(), Hours, Minutes, Sec, 0) - now; 

// to send message at 2.30PM 

var rt = new Date(now.getFullYear(), now.getMonth(),

                now.getDate(), 14, 30, 00, 0) - now; 

if (rt < 0) {

    rt += 86400000; 

}

setTimeout(startTimer, rt);

Schedule your message section ends here*/

// Replace My Contact Name with the name 

// of your WhatsApp contact or group e.g. title="Peter Parker"

name = "My Contact Name" 

    simulateMouseEvents(document.querySelector('[title="' + name + '"]'), 'mousedown');

function startTimer()

{

    setTimeout(myFunc, 3000);

}

startTimer();

var eventFire = (MyElement, ElementType) => {

    var MyEvent = document.createEvent("MouseEvents");

    MyEvent.initMouseEvent

     (ElementType, true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);

    MyElement.dispatchEvent(MyEvent);

};

function myFunc()

{

    messageBox = document.querySelectorAll("[contenteditable='true']")[1];

    message = "My Message"; // Replace My Message with your message use   to add spaces to your message

    counter = 5; // Replace 5 with the number of times you want to send your message

    for (i = 0; i < counter; i++) {

        event = document.createEvent("UIEvents");

        messageBox.innerHTML = message.replace(/ /gm, ''); // test it

        event.initUIEvent("input", true, true, window, 1);

        messageBox.dispatchEvent(event);

        eventFire(document.querySelector('span[data-icon="send"]'), 'click');

    }

}