js下滑加载更多

作者: 左木北鱼 | 来源:发表于2018-12-06 18:44 被阅读0次

js下滑加载更多
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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Load more</title>
</head>
<body>
  <ul id="list">
  </ul>
  <script type="text/javascript" src="./jquery.min.js"></script>
  <script>
    $(document).ready(function () {
      let html = ``;
      for (let i = 0; i < 30; i++) {
        html += `<li>${i}</li>`;
      }
      $("#list").html(html);
    });
    window.addEventListener('scroll', () => {
      let clientHeight = document.documentElement.clientHeight || window.innerHeight; // 可视区域高度
      let scrollHeight = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop; // 滚动高度
      let offsetHeight = document.body.offsetHeight || document.documentElement.offsetHeight; // 文档高度
      console.log(clientHeight, scrollHeight, offsetHeight);
      let sw = true;
      if ((clientHeight + scrollHeight) >= (offsetHeight - 100)) {
        if (sw) {
          sw = false;
          let length = $("#list li").length;
          let html = '';
          for (let i = length; i < length + 10; i++) {
            html += `<li>${i}</li>`;
          }
          $("#list").append(html);
          sw = true;
        }
      }
    })
  </script>
  <style>
    ul {
      list-style-type: none;
    }
    ul li {
      float: left;
      display: inline;
      width: 100%;
      height: 40px;
    }
    ul li:nth-of-type(odd) {
      background: darkgray;
    }
    ul li:nth-of-type(even) {
      background: darkcyan;
    }
  </style>
</body>
</html>

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