js 的一点小问题，有空帮忙看看吗（javascript 问题）

V2EX = way to explore

V2EX 是一个关于分享和探索的地方

For Existing Member Sign In

This topic created in 4247 days ago, the information mentioned may be changed or developed.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
function deleteRows(e){
var deleteRows =document.getElementById(e);
var deleteRowsIndex =deleteRows.rowIndex;
document.getElementById("myTable").deleteRow(deleteRowsIndex);
}
function addRow(){
var newRow=document.getElementById("myTable").insertRow(3);
var col1=newRow.insertCell(0);
col1.innerHTML="葡萄";
var col2=newRow.insertCell(1);
col2.innerHTML="10";
var col3=newRow.insertCell(2);
col3.innerHTML="5";
var col4=newRow.insertCell(3);
col4.innerHTML="<input type='button' value='删除' onclick='delRow()'/>"
}
function delRows(){
document.getElementById("myTable").deleteRow(1);
}
function getRows(){
var tb=document.getElementById("myTable");
alert(tb.rows.length);
}
function getCells(){
var tb=document.getElementById("myTable");
var tr=tb.rows[1];
var tdCount =tr.cells.length;
alert(tdCount);
}
</script>
</head>

<body>
<table width="275" border="1" id="myTable">
<thead>
<td width="71" height="33">商品名称</td>
<td width="51">价格</td>
<td width="47">数量</td>
<td width="78"></td>
</thead>
<tbody>
<tr id="aa">
<td height="25">苹果</td>
<td>2</td>
<td>10</td>
<td><input type="button" value="删除" onclick="deleteRows('aa')" /></td>
</tr>
<tr id="aaa">
<td height="25">香蕉</td>
<td>5</td>
<td>10</td>
<td><input type="button" value="删除" onclick="deleteRows('aaa')" /></td>
</tr>
</tbody>
</table>
<input type="button" value="增加行" onclick="addRow()"/>
<input type="button" value="总行数" onclick="getRows()"/>
<input type="button" value="第二行单元格" onclick="getCells()"/>
<input type="button" value="删除第二行" onclick="delRows()"/>
</body>
</html>

var

onclick=

mytable

13 replies • 2014-09-11 12:51:56 +08:00