JavaScript Operations Table Sorting

Table sorting, the general approach is to pass the sorted fields to the background to requery and sort, JavaScript can also do a simple table sorting, Memo code:

Type converter, which converts the column's field type to a type that can be sorted: 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 ();
　　　　　　　　
}
}
　　　　　　
Sort function Generator, Icol represents the column index, Sdatatype represents the data type of the column
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;
}
};
}
　　　　　　
Sorting method
function sorttable (Stableid, Icol, Sdatatype) {
var otable = document.getElementById (Stableid);
var otbody = otable.tbodies[0];
var coldatarows = otbody.rows;
var atrs = new Array;
　　　　　　　　
Put all columns into an array
for (Var i=0 i < coldatarows.length; i++) {
Atrs[i] = coldatarows[i];
}
　　　　　　　　
To determine if the last sorted column is the same as the column you are sorting now, use the reverse () reverse order directly
if (Otable.sortcol = = Icol) {
Atrs.reverse ();
} else {
Using the sort method of an array to pass the sort function
Atrs.sort (Generatecomparetrs (Icol, Sdatatype));
}
　　　　
var ofragment = document.createdocumentfragment ();
for (Var i=0 i < atrs.length; i++) {
Ofragment.appendchild (Atrs[i]);
}
　　　
Otbody.appendchild (ofragment);
Record the last sorted column index
Otable.sortcol = Icol;
}