具体代码如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
table {
text-align: center;
}
</style>
<script>
function delRow(id) {
//取得要删除的那一行
var row = document.getElementById(id);//按照id来找到行
var table = document.getElementById('mytb');
table.deleteRow(row.rowIndex);//按照行的索引删除某行的内容
}
function addrow() {
var mytb = document.getElementById('mytb');
var index = mytb.rows.length - 1;//取得插入目标索引，某行
var row = mytb.insertRow(index);//把行插入到某个位置，插入某行
var id = 'row' + row.rowIndex;//拼接id
row.setAttribute('id', id);//设置id
var td0 = row.insertCell(0);//td0创建一个单元格
td0.innerHTML = "好看耐用超耐磨沙发两件套";//设置td0的内容
var td1 = row.insertCell(1);
td1.innerHTML = row.rowIndex;//把行的索引赋给td1的内容
var td2 = row.insertCell(2);//把td2插入在某个单元格里面
td2.innerHTML = '<input type="button" value="删除" onclick="delRow(\'' + id + '\')">' +
'<input type="button" value="修改" id="update" onclick="update(\'' + id + '\')">';
}
function update(id) {
var row = document.getElementById(id);
var td1 = row.cells[1];
var v = td1.innerHTML;
td1.innerHTML = '<input type="text" value="' + v + '">';
row.cells[2].innerHTML = '<input type="button" value="删除" onclick="delRow(\'' + id + '\')">' +
'<input type="button" value="确定" id="update" onclick="firmrow(\'' + id + '\')">';
}
function firmrow(id) {
var row=document.getElementById(id);
var td1=row.cells[1];//取得各行的第二个单元格
var input=td1.firstChild;//取得input标签
var v=input.value;//取得input的内容
td1.innerHTML=v;//把内容赋给td1
var td2=row.cells[2];
td2.innerHTML = '<input type="button" value="删除" onclick="delRow(\'' + id + '\')">' +
'<input type="button" value="修改" id="update" onclick="update(\'' + id + '\')">';
}
</script>
</head>
<body>
<table border="1" cellspacing="0" cellpadding="0" id="mytb">
<tr>
<td>商品名</td>
<td>数量</td>
<td>操作</td>
</tr>
<tr id="del1">
<td>好看耐用超耐磨沙发两件套</td>
<td>24</td>
<td><input type="button" value="删除" onclick="delRow('del1')"><input type="button" value="修改"></td>
</tr>
<tr>
<td colspan="3"><input type="button" value="增加订单" onclick="addrow()"></td>
</tr>
</table>
</body>
</html>
