jquery implements sorting according to Chinese tables

//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(); 
} 
} 
// 汉字排序方法 
function chrComp(a,b) 
{ 
return a.localeCompare(b); 
} 
//排序函数产生器 
function generateCompareTRs(iCol, sDataType,isinput,sDec) 
{ 
return function compareTRs(oTR1, oTR2) 
{ 
if(isinput == 1) 
{ 
var vValue1 = convert(oTR1.getElementsByTagName("input")[iCol].value); 
var vValue2 = convert(oTR2.getElementsByTagName("input")[iCol].value); 
} 
else 
{ 
var vValue1 = convert(oTR1.cells[iCol].firstChild.nodeValue, sDataType); 
var vValue2 = convert(oTR2.cells[iCol].firstChild.nodeValue, sDataType); 
} 
if(sDec=='desc') 
{ 
if(sDataType=='int') 
{ 
return vValue1 == vValue2 ? 0 :(vValue1 - vValue2 <0 ? 1 : -1); 
} 
else if(sDataType ==&#39;cn&#39;) 
{ 
if(chrComp(vValue1,vValue2)>0) 
{ 
return -1; 
} 
else if(chrComp(vValue1,vValue2)<0) 
{ 
return 1; 
} 
else 
{ 
return 0; 
} 
} 
else 
{ 
if (vValue1 > vValue2) { 
return -1; 
} else if (vValue1 < vValue2) { 
return 1; 
} else { 
return 0; 
} 
} 
} 
else if(sDec==&#39;asc&#39;) 
{ 
if(sDataType==&#39;int&#39;) 
{ 
return vValue1 == vValue2 ? 0 :(vValue1 - vValue2 >0 ? 1 : -1); 
} 
else if(sDataType ==&#39;cn&#39;) 
{ 
return chrComp(vValue1,vValue2); 
} 
else 
{ 
if (vValue1 > vValue2) { 
return 1; 
} else if (vValue1 < vValue2) { 
return -1; 
} else { 
return 0; 
} 
} 
} 
}; 
} 
//重置单元格的classname 
function ChangeClsName(tr,num) 
{ 
num = num%2?1:2; 
num.toString(); 
for ( var i = 0 ; i < tr.childNodes.length; i ++ ) 
{ 
tr.childNodes[i].className = "row" + num 
} 
} 
/*排序方法（主函数）

*/ 
function sortTable(sTableID, iCol, sDataType, isinput, sDec) 
{ 
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]; 
} 
aTRs.sort(generateCompareTRs(iCol, sDataType,isinput, sDec)); 
var oFragment = document.createDocumentFragment(); 
for (var i=0; i < aTRs.length; i++) 
{ 
oFragment.appendChild(aTRs[i]); 
ChangeClsName(aTRs[i],i); 
} 
oTBody.appendChild(oFragment); 
}

/* sorting methods */ 
function multisort(table,sortList,cache) { 
if(table.config.debug) { var sortTime = new Date(); } 
var dynamicExp = "var sortWrapper = function(a,b) {", l = sortList.length; 
for(var i=0; i < l; i++) { 
var c = sortList[i][0]; 
var order = sortList[i][1]; 
var s = (getCachedSortType(table.config.parsers,c) == "text") ? ((order == 0) ? "sortText" : "sortTextDesc") : ((order == 0) ? "sortNumeric" : "sortNumericDesc"); 
var e = "e" + i; 
dynamicExp += "var " + e + " = " + s + "(a[" + c + "],b[" + c + "]); "; 
dynamicExp += "if(" + e + ") { return " + e + "; } "; 
dynamicExp += "else { "; 
} 
for(var i=0; i < l; i++) { 
dynamicExp += "}; "; 
} 
dynamicExp += "return 0; "; 
dynamicExp += "}; "; 
eval(dynamicExp); 
cache.normalized.sort(sortWrapper); 
if(table.config.debug) { benchmark("Sorting on " + sortList.toString() + " and dir " + order+ " time:", sortTime); } 
return cache; 
}; 
function sortText(a,b) { 
return ((a < b) ? -1 : ((a > b) ? 1 : 0)); 
}; 
function sortTextDesc(a,b) { 
return ((b < a) ? -1 : ((b > a) ? 1 : 0)); 
}; 
function sortNumeric(a,b) { 
return a-b; 
}; 
function sortNumericDesc(a,b) { 
return b-a; 
}; 
function getCachedSortType(parsers,i) { 
return parsers[i].type; 
};

function sortText(a,b) { 
return a.localeCompare(b); 
}; 
function sortTextDesc(a,b) { 
return -a.localeCompare(b); 
};