The function of ASP.net jqurey to modify and check the imitated GridView

Jqurey Code section:

<script type= "Text/javascript" > var flag = 0; Add new Row function AddRow () {var nrow = ' <tr><td><input name= ' hideid ' type= ' hidden ' V Alue= '/><input name= ' username ' type= ' text ' value= ' ' size= ' maxlength= ' Select Name= ' seltype ' id=seltype1><option value= ' text ' > TextBox </option><option value= ' textarea ' > Multi-text Area </option><option value= ' Select ' > Dropdown box </option><option value= ' Radio ' > Radio box </option ><option value= ' checkbox ' > CheckBox </option></select></td><td><span class= ' heb ' Name= ' Buttonspan ' ><input value= ' add ' onclick= ' AddData (this) ' type= ' button ' class= ' Se_buton '/>&nbsp; <input value= ' Cancel ' type= ' button ' onclick= ' Deletenewrow (this) ' class= ' Se_buton '/></span></td></  
            Tr> ";  
                if (flag = = 0) {$ (' #attributetable '). Append (Nrow);  
flag = 1;            }//Add data from new row to background function addData (obj) {var tr  
            obj = $ (obj). Parents (' tr ');  
            var username = $ (trobj). Find (': Text[name=username] '). Val ();  
     
            var SelType = $ (trobj). Find (' select[name=seltype] '). Val (); $.post ("Supplyajax.aspx", {username:username, Seltype:seltype, type: "Add"}, function (data) {if (d  
                    Ata.tostring ()!= "0") {$ (trobj). Find (': Hidden[name=hideid] '). Val (data.tostring ());  
                Changedisable (obj, 0);  
                    else {deletenewrow (obj);  
                Alert (' Add failed ');  
            }  
            });  
        Flag = 0; }//Update row function Upddata (obj) {var trobj = $ (ob  
            j). Parents (' tr ');  
    var id = $ (trobj). Find (': Hidden[name=hideid] '). Val ();        var username = $ (trobj). Find (': Text[name=usrname] '). Val ();  
            var SelType = $ (trobj). Find (' select[name=seltype] '). Val ();  $.post ("Supplyajax.aspx", {id:id, username:username, Seltype:seltype, type: "Update"}, function (data)  
                {if (data.tostring ()!= "0") {changedisable (obj, 0);  
                else {alert (' update failed ');  
        }  
            });  
            ///delete new line function Deletenewrow (obj) {$ (obj). Parents (' tr '). ReplaceWith (');  
        Flag = 0;  
            //Delete Row function deleterow (obj) {var trobj = $ (obj) in the database. Parents (' tr ');  
            var id = $ (trobj). Find (': Hidden[name=hideid] '). Val (); $.post ("Supplyajax.aspx", {id:id, type: "Delete"}, function (data) {if (data.tostring ()!= "0") { 
                    $ (obj). Parents (' tr '). ReplaceWith (');  
                else {alert (' delete failed ');  
        }  
            });  
            //Change Edit Status function changedisable (obj, type) {var trobj = $ (obj). Parents (' tr ');  
                if (type = = 0) {$ (trobj). Find (': Text ')-attr (' disabled ', ' disabled ');  
                $ (trobj). Find (' select '). attr (' disabled ', ' disabled '); $ (trobj). Find (' Span[name=buttonspan] '). HTML ("<input name= ' GX ' value= ' Update ' type= ' button ' onclick= ' Changedisable" ( this,1) ' class= ' Se_buton '/>&nbsp;<input value= ' delete ' type= ' button ' name= ' qx ' onclick= ' (this) ' class  
            = ' Se_buton '/> ');  
                } if (type = = 1) {$ (trobj). Find (': Text '). attr ("Disabled");  
                $ (trobj). Find (' select '). attr (' disabled ', '); $ (trobj). Find (' Span[name=buttonspan] '). HTML ("<inpuT name= ' GX ' value= ' Determine ' type= ' button ' onclick= ' Upddata (this) ' class= ' Se_buton '/>&nbsp;<input ' ' The "Cancel ' type  
            = ' button ' name= ' qx ' onclick= ' changedisable (this,0) ' class= ' Se_buton '/> '); }} </script>