<html>
<head>
<script language="javascript">
var r=-1;
function addrow(){
r++;
//alert(r);
var tbody = document.getElementById("tb");
var row = tbody.insertRow();
var innerHTML1 = "<input type='text' name='cusername' size='15' value=''>";
var innerHTML2 = "<input type='text' name='cpassword' size='15' value=''>";
var innerHTML3 = "<input type='button' name='cpassword2' value='删除' onclick='remove("+r+")'>";
row.insertCell(0).innerHTML = innerHTML1;
row.insertCell(1).innerHTML = innerHTML2;
row.insertCell(2).innerHTML = innerHTML3;
tbody.appendChild(row);
}
function remove(ind){
//alert(ind);
var tbody = document.getElementById("tb");
r--;
var oTr = tbody.childNodes[ind];
// alert(tbody.childNodes.length);
// alert(oTr.tagName);
//alert(oTr.innerHTML);
tbody.removeChild(oTr);
var trRows = tbody.childNodes;
for (var i = ind; i < trRows.length; i++) {
var sibingTr = trRows[i];
//alert(sibingTr.innerHTML);
if (sibingTr == null) {
continue;
}
var cells = sibingTr.childNodes;
for (var j = 0; j < cells.length; j++) {
var oldContent = cells[j].innerHTML;
if (j == 0) {
var replaceRegx = "(\d+)/g";
oldContent = oldContent.replace(replaceRegx, "" + (i + 1));
}
cells[j].innerHTML = ProcessStrIndex(oldContent, i);
}
//alert(sibingTr.innerHTML);
}
}
function ProcessStrIndex(str, index) {
//alert(index);
var replaceRegx = /\(\d+\)/g;
str = str.replace(replaceRegx, "(" + index + ")");
replaceRegx = /\[\d+\]/g;
str = str.replace(replaceRegx, "[" + index + "]");
return str;
}
</script>
</head>
<table border = "1" width="55%">
<tbody id = "tb">
<thead><td colspan = "3">addAndRemoveRows</td></thead>
</tbody>
<tr align = "left"><td align = "right" colspan="3"><input type="button" value="添加" onclick="addrow()"/></td></tr>
</table>
</html>
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