Delete all unread gmail

gistfile1.txt

Search -> is:unread 

const checkIcon = document.querySelector('.T-Jo')
const deleteIcon = document.querySelector('.nX')

// https://stackoverflow.com/questions/24025165/simulating-a-mousedown-click-mouseup-sequence-in-tampermonkey/24026594
function triggerMouseEvent (node, eventType) {
    var clickEvent = document.createEvent ('MouseEvents');
    clickEvent.initEvent (eventType, true, true);
    node.dispatchEvent (clickEvent);
}

function deleteNow(el) {
    triggerMouseEvent (el, "mouseover");
    triggerMouseEvent (el, "mousedown");
    triggerMouseEvent (el, "mouseup");
    triggerMouseEvent (el, "click");
}

const intv212 = setInterval(() => { checkIcon.click(); }, 10000);
const intv213 = setInterval(() => {deleteNow(deleteIcon); }, 10000);