Chrome浏览器有个彩蛋，在断网状态下或者地址栏输入Chrome://dino按下空格键，会触发小恐龙游戏彩蛋，下面这个脚本来源于网络，一位大佬写出来自动控制小恐龙跳跃，以供学习：

function TrexRunnerBot() {
  const makeKeyArgs = (keyCode) => {
    const preventDefault = () => void 0;
    return {keyCode, preventDefault};
  };

  const upKeyArgs = makeKeyArgs(38);
  const downKeyArgs = makeKeyArgs(40);
  const startArgs = makeKeyArgs(32);

  if (!Runner().playing) {
    Runner().onKeyDown(startArgs);
    setTimeout(() => {
      Runner().onKeyUp(startArgs);
    }, 500);
  }

  function conquerTheGame() {
    if (!Runner || !Runner().horizon.obstacles[0]) return;

    const obstacle = Runner().horizon.obstacles[0];

    if (obstacle.typeConfig && obstacle.typeConfig.type === 'SNACK') return;

    if (needsToTackle(obstacle) && closeEnoughToTackle(obstacle)) tackle(obstacle);
  }

  function needsToTackle(obstacle) {
    return obstacle.yPos !== 50;
  }

  function closeEnoughToTackle(obstacle) {
    return obstacle.xPos <= Runner().currentSpeed * 18;
  }

  function tackle(obstacle) {
    if (isDuckable(obstacle)) {
      duck();
    } else {
      jumpOver(obstacle);
    }
  }

  function isDuckable(obstacle) {
    return obstacle.yPos === 50;
  }

  function duck() {
    Runner().onKeyDown(downKeyArgs);

    setTimeout(() => {
      Runner().onKeyUp(downKeyArgs);
    }, 500);
  }

  function jumpOver(obstacle) {
    if (isNextObstacleCloseTo(obstacle))
      jumpFast();
    else
      Runner().onKeyDown(upKeyArgs);
  }

  function isNextObstacleCloseTo(currentObstacle) {
    const nextObstacle = Runner().horizon.obstacles[1];

    return nextObstacle && nextObstacle.xPos - currentObstacle.xPos <= Runner().currentSpeed * 42;
  }

  function jumpFast() {
    Runner().onKeyDown(upKeyArgs);
    Runner().onKeyUp(upKeyArgs);
  }

  return {conquerTheGame: conquerTheGame};
}

let bot = TrexRunnerBot();
let botInterval = setInterval(bot.conquerTheGame, 2);

再将这个代码复制粘贴在浏览器控制台 Console 中，（按F12打开控制台），回车键即可。