先来说明两个函数的标准定义。
elementNode.setAttribute(name,value)
name 必需。规定要设置的属性名。
value 必需。规定要设置的属性值。
该方法把指定的属性设置为指定的值。如果不存在具有指定名称的属性，该方法将创建一个新属性。
elementNode.getAttribute(name)
name 必需。规定从中取得属性值的属性。
一、setAttribute的问题
elementNode为...
希望对其增加一个单击行的事件处理函数，
写法1：
table1row1.setAttribute("onclick", "selectrow1(this)");
IE8, Firefox, google chrome 能正确触发click 事件
IE6，IE7则不能触发click 事件。
写法2：
table2row1.onclick = function() { selectrow2(this) };所有测试浏览器均能触发click 事件
故为了兼容在不同的IE中，我们可以统一使用如下语句。
table2row1.onclick = function() { selectrow2(this) };二、getAttribute的问题
elementNode为...
先用setAttribute设置属性
table1row1.setAttribute("level", 1);
再用getAttribute来获取标签的属性值
var level = table1row1.getAttribute("level");
alert("table1row1 level:" + level + "\r\ntypeof(level) = " + (typeof (level)).toString());
在IE6，7 中显示
table1row1 level:1
typeof(level) = number
在IE8, Firefox, google chrome中显示
table1row1 level:1
typeof(level) = string
为统一处理此两种情况，代码统一如下：
代码如下:
var level = table1row1.getAttribute("level");
if (level === undefined || level == null) {
level = "0";
}
level = level.toString();
if (level.trim() == "") {
level = "0";
}$addHandler(row,"click", function() { selectrow(this) });代码如下:
<!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>
<title>Test</title>
<script type="text/javascript" language="javascript">
function pageLoad() {
var table1row1 = document.getElementById("table1row1");
table1row1.setAttribute("level", 1);
table1row1.setAttribute("onclick", "selectrow1(this)");
var table1row2 = document.getElementById("table1row2");
table1row2.setAttribute("level", 2);
table1row2.setAttribute("onclick", "selectrow1(this)");
var table2row1 = document.getElementById("table2row1");
table2row1.setAttribute("level", 3);
table2row1.onclick = function() { selectrow2(this) };
var table2row2 = document.getElementById("table2row2");
table2row2.setAttribute("level", 4);
table2row2.onclick = function() { selectrow2(this) };
}
var CurrentSelectRow1 = null;
function selectrow1(newSelectRow) {
if (CurrentSelectRow1 != null) {
CurrentSelectRow1.style.backgroundColor = '#ffffff';
}
newSelectRow.style.backgroundColor = 'PeachPuff';
CurrentSelectRow1 = newSelectRow;
}
var CurrentSelectRow2 = null;
function selectrow2(newSelectRow) {
if (CurrentSelectRow2 != null) {
CurrentSelectRow2.style.backgroundColor = '#ffffff';
}
newSelectRow.style.backgroundColor = '#ff0000';
CurrentSelectRow2 = newSelectRow;
}
function button1_click() {
var table1row1 = document.getElementById("table1row1");
var level = table1row1.getAttribute("level");
var desc1 = "table1row1 level:" + level + "\r\ntypeof(level) = " + (typeof (level)).toString();
alert(desc1);
var onclick1 = table1row1.getAttribute("onclick");
var desc2 = "table1row1 onclick:" + onclick1.toString() + "\r\ntypeof(onclick) = " + (typeof (onclick1)).
toString();
alert(desc2);
}
function button2_click() {
var table2row1 = document.getElementById("table2row1");
var level = table2row1.getAttribute("level");
var desc1 = "table2row1 level:" + level + "\r\ntypeof(level) = " + (typeof (level)).toString();
alert(desc1);
var onclick1 = table2row1.onclick;
var desc2 = "table2row1 onclick:" + onclick1.toString() + "\r\ntypeof(onclick) = " + (typeof (onclick1)).
toString();
alert(desc2);
}
</script>
</head>
<body onload="pageLoad();">
<div style="width: 600px">
<span>table1</span>
<table cellspacing="0" rules="all" border="1" id="table1" style="border-width: 1px;
border-style: Solid; width: 100%; border-collapse: collapse;">
<tr id="table1row0">
<td align="center" style="width: 50%;">
No.
</td>
<td align="center" style="width: 50%;">
Item
</td>
</tr>
<tr id="table1row1">
<td align="center" style="width: 50%;">
1
</td>
<td align="left" style="width: 50%;">
2C.40E80.041
</td>
</tr>
<tr id="table1row2">
<td align="center" style="width: 50%;">
2
</td>
<td align="left" style="width: 50%;">
4L.013Y2.003
</td>
</tr>
</table>
<input type="button" id="button1" onclick="return button1_click();" />
</div>
<div style="width: 600px">
<br />
<span>table2</span>
<table cellspacing="0" rules="all" border="1" id="table2" style="border-width: 1px;
border-style: Solid; width: 100%; border-collapse: collapse;">
<tr id="table2row0">
<td align="center" style="width: 50%;">
No.
</td>
<td align="center" style="width: 50%;">
Item
</td>
</tr>
<tr id="table2row1">
<td align="center" style="width: 50%;">
1
</td>
<td align="left" style="width: 50%;">
4G.0QE18.001
</td>
</tr>
<tr id="table2row2">
<td align="center" style="width: 50%;">
2
</td>
<td align="left" style="width: 50%;">
2K.61209.208
</td>
</tr>
</table>
<input type="button" id="button2" onclick="return button2_click();" />
</div>
</body>
</html>下载本文