Carve

var waitForEl = function (selector, callback, maxTimes = false) {
  if (jQuery(selector).length) {
    callback();
  } else {
    if (maxTimes === false || maxTimes > 0) {
      maxTimes != false && maxTimes--;
      setTimeout(function () {
        waitForEl(selector, callback, maxTimes);
      }, 100);
    }