表のソート

		<style>
			th {cursor : pointer;}	
		</style>
		<table border="1" id="table">
				<thead>
					<tr>
						<th> </th>
						<th> </th>
						<th> </th>
					</tr>	
				</thead>
				<tbody>
						<tr>
							<td>23</td>
							<td>1988-03-30</td>
							<td>10000</td>
						</tr>
						
						<tr>
							<td>21</td>
							<td>1986-02-14</td>
							<td>8000</td>
						</tr>
						
						<tr>
							<td>25</td>
							<td>1989-02-28</td>
							<td>6000</td>
						</tr>
				</tbody>
		</table>

<script>
	window.onload = function() {
		var ths = table.tHead.rows[0].cells;
		for(var i = 0 ; i < ths.length ; i++) {
			ths[i].onclick = function(i) {
				return function() {
					sortFun(i + 1);	
				};
			}(i);	
		}
	};
	function sortFun(num) {
			var rows = table.tBodies[0].rows;
			var arr = [];
			for(var i = 0 ; i < rows.length ; i++) {
				arr.push(rows[i]);	
			}
			arr.sort(window['sort' + num]);
			for(var i = 0 ; i < arr.length ; i++) {
				table.tBodies[0].appendChild(arr[i]);
			}
	}
	function sort1(a , b) {
			var num1 = parseInt(a.cells[0].firstChild.nodeValue);
			var num2 = parseInt(b.cells[0].firstChild.nodeValue);
			return num1 - num2;
	}
	function sort2(a , b) {
		var arrs1 = a.cells[1].firstChild.nodeValue.split('-');
		var arrs2 = b.cells[1].firstChild.nodeValue.split('-');
		var date1 = new Date(arrs1[0] , arrs1[1] , arrs1[2]);	
		var date2 = new Date(arrs2[0] , arrs2[1] , arrs2[2]);	
		return date1.getTime() - date2.getTime() ;
	}
	function sort3(a , b) {
			var num1 = parseInt(a.cells[2].firstChild.nodeValue);
			var num2 = parseInt(b.cells[2].firstChild.nodeValue);
			return num1 - num2;
	}
</script>