js table sorting example analysis (supports four data types: int, float, date, string)

js table sorting example analysis (supports four data types: int, float, date, string)_javascript skills

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Release： 2016-05-16 16:00:42

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

<html>
<head>
<title>SortTable2</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript">
var k=0;
/**//**************************************************************************
排序的主方法，有三个形参，STableTd,iCol,sDataType分别为需要排序的表格ID，
需要排序的表格列号，所在列的数据类型（支持int,float,date,string四种数据类型)
**************************************************************************/
function sortTable(sTableId,iCol,sDataType)
{
  var oTable=document.getElementById(sTableId);//获取表格的ID 
  var oTbody=oTable.tBodies[0]; //获取表格的tbody
  var colDataRows=oTbody.rows; //获取tbody里的所有行的引用

  var aTRs=new Array(); //定义aTRs数组用于存放tbody里的行
  for(var i=0;i<colDataRows.length;i++) //依次把所有行放如aTRs数组
  {
    aTRs.push(colDataRows[i]);
  }
  /**//***********************************************************************
  sortCol属性是额外给table添加的属性，用于作顺反两种顺序排序时的判断，区分
  首次排序和后面的有序反转
  ************************************************************************/
  if(oTable.sortCol==iCol) //非首次排序
  {
    aTRs.reverse();
  }
  else  //首次排序
  {
    if(k%2==0) //升序
    {
      aTRs.sort(generateCompareTRs(iCol,sDataType));
    }
    else if(k%2==1) //降序
    {
      aTRs.sort(generateCompareTRs1(iCol,sDataType));
    }
  }
  var oFragment=document.createDocumentFragment();  //创建文档碎片
  for(var i=0;i<aTRs.length;i++)  //把排序过的aTRs数组成员依次添加到文档碎片
  {
    oFragment.appendChild(aTRs[i]);
  }
  oTbody.appendChild(oFragment); //把文档碎片添加到tbody,完成排序后的显示更新 
  oTable.sortCol=iCol;  //把当前列号赋值给sortCol,以此来区分首次排序和非首次排序,//sortCol的默认值为-1
};

//比较函数，用于两项之间的排序
//升序
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;
    }
  };
};
//降序
function generateCompareTRs1(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;
    }
  };
};
//数据类型转换函数
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();
  }
};
</script>
</head>
<body>
<form name="f1" id="f1" action="" method="post">
<table border="1" id="tblSort" sortCol="-1">
<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">Silbings</th>
 </tr>
</thead>
<tbody>
 <tr>
  <td>Simth</td>
  <td>John</td>
  <td>7/12/1978</td>
  <td>50nGy/h</td>
 </tr>
 <tr>
  <td>Johnson</td>
  <td>Betty</td>
  <td>5/12/1965</td>
  <td>20nGy/h</td>
 </tr>
 <tr>
  <td>Henderson</td>
  <td>Nathan</td>
  <td>10/15/1977</td>
  <td>130nGy/h</td>
 </tr>
 <tr>
  <td>Willianms</td>
  <td>James</td>
  <td>2/25/1949</td>
  <td>10nGy/h</td>
 </tr>
 <tr>
  <td>Gilliam</td>
  <td>Michael</td>
  <td>7/8/1980</td>
  <td>140nGy/h</td>
 </tr>
 <tr>
  <td>Walker</td>
  <td>Matthew</td>
  <td>6/18/1981</td>
  <td>103nGy/h</td>
 </tr>
</tbody>   
</table>
</form>
</body>
</html>

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