mturk-hit-shorthand.user.library.js

const documentFunctionMappings = {
  "$": document.querySelector,
  "$$": document.querySelectorAll,
  "e$": document.addEventListener
};

Object.entries(documentFunctionMappings).forEach(([key, fn]) => window[key] = fn.bind(document));

const _noop = () => {};
const _switch = (val, branches) => (branches[val] || branches.default || _noop)();

const $createDosForAttr = (attr, attrValArrs, callbacks) => {
	const { before, every, after } = callbacks;
	every = typeof callbacks === "function" ? callbacks : every;
	return attrValArrs.map(attrValArr => (
		() => {
			(before || _noop)();
			const els = attrValArr.map(attrVal => $(`[${attr}="${attrVal}"]`));
			els.forEach(el => fnEach(el));
			(after || _noop)();
		}
	));
}

const $createDosForValueAttr = (attrValArrs, callbacks) => $createDosForAttr("value", attrValArrs, callbacks);