suchasplus

(async () => {
  const SCROLL_STEP = 300;       // 每次滚动像素
  const SCROLL_INTERVAL = 800;   // 滚动间隔(ms)
  const IDLE_WAIT = 3000;        // 到底后等待加载时间(ms)
  const MAX_IDLE_RETRIES = 5;    // 最大等待加载重试次数

  const sleep = ms => new Promise(r => setTimeout(r, ms));
  let idleCount = 0;
  let lastHeight = 0;