JQuery实现动态表格

 1 var count = 1;
 2     function add() {
 3         var tbl = document.all.ci;
 4         var rows = tbl.rows.length;
 5         var tr = tbl.insertRow(rows);
 6 
 7         var e_id = tr.insertCell(0);
 8         e_id.innerHTML = ‘<input type="text" name="e_id‘ + count + ‘" size="7"  />‘;
 9 
10         var class_id = tr.insertCell(1);
11         class_id.innerHTML = ‘‘;
12 
13         var memo = tr.insertCell(2);
14         memo.innerHTML = ‘<input type="text" name="memo‘ + count + ‘" size="14" />‘;
15 
16         var del = tr.insertCell(3);
17         del.innerHTML = ‘<input type="button" onclick="del(this)" value="删除" />‘;
18         count++;
19     }
20 
21     function del(btn) {
22         var tr = btn.parentElement.parentElement;
23         var tbl = tr.parentElement;
24         if (tr.rowIndex >= 1) {
25             tbl.deleteRow(tr.rowIndex);
26         } else {
27 
28         }
29     };