https://developers.weixin.qq.com/miniprogram/dev/framework/workers.html

worker.onMessage(function (res) {
  console.log('这是worker内部线程打印的')
  console.log(res)
  let sum = add(res.x, res.y);
  console.log(wx); // error
  worker.postMessage({
    sum: sum
  })
});


function add(x, y) {
  return x + y;
}

tion add(x, y) {
  return x + y;
}

tion add(x, y) {
  return x + y;
}