buyTickets.js

// to be used with: https://chrome.google.com/webstore/detail/custom-javascript-for-web/poakhlngfciodnhlhhgnaaelnpjljija?hl=en
// thank you: http://youmightnotneedjquery.com/


onPageLoad(buyTickets(4, 'https://www.ticketfly.com/purchase/event/1828188'));


function buyTickets(amount, ticketHref) {
    if (location.href !== ticketHref) return;

    const buySubmitEl = document.querySelectorAll('#bestSeats')

    if (buySubmitEl.length) {
        const clickEvent = document.createEvent('HTMLEvents');
        clickEvent.initEvent('click', true, false);

        const addEl = document.querySelectorAll('.plus')[0]
        Array(amount).fill(amount).forEach(() => addEl.dispatchEvent(clickEvent))

        buySubmitEl[0].dispatchEvent(clickEvent)

    } else { 
        location.reload();
    }
}
 
function onPageLoad(fn) {
  if (document.attachEvent ? document.readyState === "complete" : document.readyState !== "loading"){
    fn();
  } else {
    document.addEventListener('DOMContentLoaded', fn);
  }
}