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Example analysis of javascript operation table sorting_javascript skills

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May 16, 2016 pm 04:00 PM

javascriptTable sorting

The example in this article describes the method of javascript operating table sorting. Share it with everyone for your reference. The details are as follows:

The complete example is as follows:

<html>
 <head>
 <title>Table Sort Example</title>
 <script type="text/javascript">
 //转换器，将列的字段类型转换为可以排序的类型：String,int,float
  function convert(sValue, sDataType) {
  switch(sDataType) {
   case "int":
   return parseInt(sValue);
   case "float":
   return parseFloat(sValue);
   case "date":
   return new Date(Date.parse(sValue));
   default:
   return sValue.toString();
  }
  }
  //排序函数产生器，iCol表示列索引，sDataType表示该列的数据类型
  function generateCompareTRs(iCol, sDataType) {
  return function compareTRs(oTR1, oTR2) {
    var vValue1 = convert(oTR1.cells[iCol].firstChild.nodeValue, sDataType);
    var vValue2 = convert(oTR2.cells[iCol].firstChild.nodeValue, sDataType);
    if (vValue1 < vValue2) {
    return -1;
    } else if (vValue1 > vValue2) {
    return 1;
    } else {
    return 0;
    }
   };
  }
  //排序方法
  function sortTable(sTableID, iCol, sDataType) {
  var oTable = document.getElementById(sTableID);
  var oTBody = oTable.tBodies[0];
  var colDataRows = oTBody.rows;
  var aTRs = new Array;
  //将所有列放入数组
  for (var i=0; i < colDataRows.length; i++) {
   aTRs[i] = colDataRows[i];
  }
  //判断最后一次排序的列是否与现在要进行排序的列相同，
  //是的话，直接使用reverse()逆序
  if (oTable.sortCol == iCol) {
   aTRs.reverse();
  } else {
   //使用数组的sort方法，传进排序函数
   aTRs.sort(generateCompareTRs(iCol, sDataType));
  }
  var oFragment = document.createDocumentFragment();
  for (var i=0; i < aTRs.length; i++) {
   oFragment.appendChild(aTRs[i]);
  }
  oTBody.appendChild(oFragment);
  //记录最后一次排序的列索引
  oTable.sortCol = iCol;
  }
 </script>
 </head>
 <body>
 <p>Click on the table header to sort in ascending order.</p>
 <table border="1" id="tblSort">
  <thead>
  <tr>
   <th onclick="sortTable('tblSort', 0)"
   style="cursor:pointer">Last Name</th>
   <th onclick="sortTable('tblSort', 1)"
   style="cursor:pointer">First Name</th>
   <th onclick="sortTable('tblSort', 2, 'date')"
   style="cursor:pointer">Birthday</th>
   <th onclick="sortTable('tblSort', 3, 'int')"
   style="cursor:pointer">Siblings</th>
  </tr>
  </thead>
  <tbody>
  <tr>
   <td>Smith</td>
   <td>John</td>
   <td>7/12/1978</td>
   <td>2</td>
  </tr>
  <tr>
   <td>Johnson</td>
   <td>Betty</td>
   <td>10/15/1977</td>
   <td>4</td>
  </tr>
  <tr>
   <td>Henderson</td>
   <td>Nathan</td>
   <td>2/25/1949</td>
   <td>1</td>
  </tr>
  <tr>
   <td>Williams</td>
   <td>James</td>
   <td>7/8/1980</td>
   <td>4</td>
  </tr>
  <tr>
   <td>Gilliam</td>
   <td>Michael</td>
   <td>7/22/1949</td>
   <td>1</td>
  </tr>
  <tr>
   <td>Walker</td>
   <td>Matthew</td>
   <td>1/14/2000</td>
   <td>3</td>
  </tr>
  </tbody>
 </table> 
 </body>
</html>

I hope this article will be helpful to everyone’s JavaScript programming design.

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