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<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>
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