for bookmarklet

bookmarklet.js

main();

async function main() {
  clickXXXButton();
  setPageXXXData();
}

// your functions
function clickXXXButton() {}

function setPageXXXData() {}

// helper functions
function sleep(ms) {
  return new Promise((resolve) => setTimeout(resolve, ms));
}

function $(selector) {
  return document.querySelector(selector);
}

function $$(selector) {
  return Array.from(document.querySelectorAll(selector));
}

function $contain(selector, text) {
  return $$(selector).find((item) => item.textContent.indexOf(text) > -1);
}

function $containExact(selector, text) {
  return $$(selector).find((item) => item.textContent === text);
}

function readScript(src) {
  return new Promise((resolve, reject) => {
    var script = document.createElement("script");

    script.type = "text/javascript";
    script.src = src;
    script.onload = resolve;
    script.onerror = reject;

    document.head.appendChild(script);
  });
}

// https://github.com/neos21/frontend-sandboxes/blob/master/web-audio-beep-morse-code/index.html
async function beep(options = { sec: 0.1, times: 1, interval: 0.1 }) {
  let { times = 1 } = options;
  const { sec = 0.1, interval = 0.1 } = options;

  function play() {
    return new Promise((resolve) => {
      // Create Audio Context
      const audioContext = new window.AudioContext();
      const oscillator = audioContext.createOscillator();
      const gain = audioContext.createGain();
      oscillator.connect(gain);
      gain.connect(audioContext.destination);
      // Set Options
      oscillator.type = "sine";
      oscillator.frequency.value = 440;
      gain.gain.value = 0.3;
      // Start
      oscillator.onended = () => {
        gain.disconnect(audioContext.destination);
        oscillator.disconnect(gain);
        resolve();
      };

      oscillator.start(audioContext.currentTime);
      oscillator.stop(audioContext.currentTime + sec);
    });
  }

  while (times-- > 0) {
    await play();
    await sleep(interval * 1000);
  }
}

function downloadFile(filename, data, format = "plain") {
  if (format === "json") {
    data = JSON.stringify(data, null, 2);
  } else if (format === "csv") {
    data = data
      // escape double quotes and add double quotes
      .map((row) => row.map((cell) => `"${String(cell).replace(/"/g, '""')}"`))
      .map((row) => row.join(","))
      .join("\n");
  }

  const blob = new Blob([data], { type: "text/plain" });
  const url = URL.createObjectURL(blob);
  const a = document.createElement("a");

  document.body.appendChild(a);

  a.href = url;
  a.download = filename;

  a.click();
  document.body.removeChild(a);
}

function speak(message) {
  const synth = window.speechSynthesis;
  const utterThis = new SpeechSynthesisUtterance(message);
  
  synth.speak(utterThis);
}