html中table数据排序的js代码

代码如下：

function sortCells(event) { 
var obj = event.target; 
var count = 0; count是记录点击次数的，根据奇偶进行升序或降序 
if(!obj.getAttribute("clickCount")){ 
obj.setAttribute("clickCount", 0); 
} else { 
count = parseInt(obj.getAttribute("clickCount")); 
count++; 
obj.setAttribute("clickCount", count); 
} 
var table = event.target.parentNode.parentNode; 
if(table.nodeName.localeCompare("THEAD") == 0){ 
if(table.parentNode.nodeName.localeCompare("TABLE") == 0){ 
table = table.parentNode; 
} else { 
return; 
} 
} else if(table.nodeName.localeCompare("TBODY") == 0){ 
if(table.parentNode.nodeName.localeCompare("TABLE") == 0){ 
table = table.parentNode; 
} else { 
return; 
} 
} else if(table.nodeName.localeCompare("TABLE") == 0){ 
} else { 
return; 
} 
var colNum; 
for(x = 0; x < table.rows(1).cells.length; x++){ 
if(event.target.innerText.localeCompare(table.rows(0).cells[x].innerText) == 0){ 
colNum = x; 
break; 
} 
} 
var column = table.rows(1).cells.length; 
var row = table.rows.length; 
var Ar = new Array(row - 1); 
for (x = 0; x < row - 1; x++) { 
Ar[x] = new Array(column); 
} 
for (x = 1; x < row; x++) { 
for (y = 0; y < column; y++) { 
Ar[x - 1][y] = table.rows(x).cells(y).innerHTML; 
} 
} 
　　　　　//这个可以对字符串进行本地化排序 
/* if((count%2) == 0){ 
Ar.sort(function(a, b) { 
return b[colNum].localeCompare(a[colNum]) 
}); 
} else { 
Ar.sort(function(a, b) { 
return a[colNum].localeCompare(b[colNum]) 
}); 
} */ 
var temp; 
for (x = 0; x < row - 1; x++) { 
for (y = 1; y < row - 1; y++) { 
temp = Ar[y - 1]; 
if((count % 2) == 0){ 
if (parseInt(Ar[y - 1][colNum]) >= parseInt(Ar[y][colNum])) { 
Ar[y - 1] = Ar[y]; 
Ar[y] = temp; 
} 
} else { 
if (parseInt(Ar[y - 1][colNum]) <= parseInt(Ar[y][colNum])) { 
Ar[y - 1] = Ar[y]; 
Ar[y] = temp; 
} 
} 
} 
} 
for (x = 1; x < row; x++) { 
for (y = 0; y < column; y++) { 
table.rows(x).cells(y).innerHTML = Ar[x - 1][y]; 
} 
} 
count++; 
}