$(function () {
  // 显示区高度
  let ch = document.documentElement.clientHeight || document.body.clientHeight;
  let lock = false;
  $(window).scroll(function () {
    if (lock) return false;
    // 滑动区高度
    let sh = document.documentElement.scrollHeight || document.body.scrollHeight;
    // 滑动位置
    let st = document.documentElement.scrollTop || document.body.scrollTop;
    let c = sh * 1 - ch * 1 - st * 1;
    if (c == 0) {
      lock = true;
      $(".my-loading").show();
      data().then(res => { lock = res; $(".my-loading").hide(); })
    }
  })
  // 加载数据
  function data () {
    let str = `<a target="_blank" href="https://www.baidu.com" class="list-item">
    <div class="item-img">
      <img src="https://imgs.app.gaokaozhitongche.com/uploads/img/2021/0809/1628514522805675.png!cover2"
        alt="">
    </div>
    <div class="item-detail">
      <div class="title">广东省警察学院：从未委托任何个人或机构进行招生宣传;广东省警察学院：从未委托任何个人或机构进行招生宣传</div>
      <div class="time">高考动态<span>2021-04-21</span></div>
    </div>
  </a>`
    return new Promise(resolve => {
      setTimeout(() => {
        $(".list").append(str);
        resolve(false)
      }, 2000)
    })
  }
})