{"html":"<!DOCTYPE html>\n<html>\n\n<head>\n  <meta charset=\"utf-8\" />\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n\n\n</head>\n\n<body>\n  <ul id=\"myList\">\n    <li id=\"item1\">项目 1</li>\n    <li id=\"item3\">项目 3</li>\n    <li id=\"item2\">项目 2</li>\n    <li id=\"item4\">项目 4</li>\n  </ul>\n\n  <script>\n     function sortAndReturnTextContent() {\n      const items = document.getElementById('myList').children;\n      // 在此补全代码\n      const arr = Array.from(items)\n      //冒泡排序\n      for (let i = 0; i < arr.length; i++) {\n        for (let j = 0; j < arr.length - i - 1; j++) {\n          if (arr[j].id.substr(4) * 1 > arr[j + 1].id.substr(4) * 1) {\n            let temp = arr[j]\n            arr[j] = arr[j + 1]\n            arr[j + 1] = temp\n          }\n        }\n      }\n      for (let item of arr) {\n        document.getElementById('myList').appendChild(item)\n      }\n    }\n    sortAndReturnTextContent()\n  </script>\n\n\n\n</body>\n\n</html>","css":"","js":""}