IE6/7 浏览器存在的setAttribute bug
版权声明：转载时请以超链接形式标明文章原始出处和作者信息及本声明
文章引用地址：http://www.iefans.net/ie-setattribute-bug/ 作者：iefans
IE的setAttribute中与标准浏览器的有许多不同，主要表现在IE对setAttribute的功能上有些限制，就是不能用setAttribute来设定class、style于onclick等事件的值以及设置name属性，那这样就会导致setAttribute在IE浏览器里失去很多的用途！而在IE6,IE7中，如果动态生成input元素，是无法为其设置name属性的。不过当然这bug已经在最新版的IE8中被修复，详情可以浏览微软官网给出的资料。由于name属性对表单元素非常重要（在提交表单时，与value属性组成键值对，发送到后台），因此必须留意这个bug。
微软的相关资料：NAME Attribute | name Property
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var form = document.createElement("form");
var input = document.createElement("input");
var root = document.body;
input.setAttribute("name", "test");
root.appendChild(form);//注意添加顺序，添加顺序错的话，IE会内存泄漏
form.appendChild(input);
alert(form.elements.test)
}
</script>
</head>
<body>
<h3>请在IE6与IE7下浏览，当然IE8也可以，我已让IE8处在IE7的兼容模式下运作。兼容模式连bugs也兼容了……</h3>
</body>
</html>
解决办法有两个，如用innerHTML，觉得innerHTML真是一个伟大的发明，连火狐与W3C那帮死对头也不得不屈服。
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var form = document.createElement("form");
form.innerHTML = "<input name='test' type='text' />"
body.appendChild(form);
alert(form.elements.test)
}
</script>
</head>
<body>
<h3>请在IE6与IE7下浏览</h3>
</body>
</html>
另一个利用IE强大的createElement特征，它能在创建元素的同时，连属性也一起创建。
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var form = document.createElement("form");
try{
var input = document.createElement("<input type='text' name='test'>");
}catch(e){
var input = document.createElement("input");
input.setAttribute("name", "test")
}
body.appendChild(form);//注意添加顺序，添加顺序错的话，IE会内存泄漏
form.appendChild(input);
alert(form.elements.test)
}
</script>
</head>
<body>
<h3>请在IE6与IE7下浏览</h3>
</body>
</html>
但name只是冰山一角，setAttribute在设置属性时，有许多属性在IE下与标准浏览器的命名是不一样的，看一下jQuery，发现它也是不全的。许多地雷埋在这里，总有一个你迟早会中的。下面是一个详尽的参照表：左边为标准游览器的，右边是IE的。
var IEfix = {
acceptcharset: "acceptCharset",
accesskey: "accessKey",
allowtransparency: "allowTransparency",
bgcolor: "bgColor",
cellpadding: "cellPadding",
cellspacing: "cellSpacing",
"class": "className",
colspan: "colSpan",
checked: "defaultChecked",
selected: "defaultSelected",
"for": "htmlFor" ,
frameborder: "frameBorder",
hspace: "hSpace",
longdesc: "longDesc",
maxlength: "maxLength",
marginwidth: "marginWidth",
marginheight: "marginHeight",
noresize: "noResize",
noshade: "noShade",
readonly: "readOnly",
rowspan: "rowSpan",
tabindex: "tabIndex",
valign: "vAlign",
vspace: "vSpace"
}
IE不能用setAttribute为dom元素设置onXXX属性，换言之，不能用setAttribute设置事件。
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var form = document.createElement("form");
form.innerHTML = "<input name='test' type='text' />"
body.appendChild(form);
form.elements.test.setAttribute("onfocus", "alert(this.name)");
}
</script>
</head>
<body>
<h3>用setAttribute设置事件</h3>
<p>在IE下文本域获得焦点后并没有弹出预期的alert!</p>
</body>
</html>
IE要直接赋给一个函数！
var body = document.body;
var form = document.createElement("form");
form.innerHTML = "<input name='test' type='text' />"
body.appendChild(form);
if(!+"\v1"){
form.elements.test.setAttribute("onfocus", function(){alert(this.name)});
}else{
form.elements.test.setAttribute("onfocus", "alert(this.name)");
}
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var form = document.createElement("form");
form.innerHTML = "<input name='test' type='text' />"
body.appendChild(form);
if(!+"\v1"){
form.elements.test.setAttribute("onfocus", function(){alert(this.name)});
}else{
form.elements.test.setAttribute("onfocus", "alert(this.name)");
}
}
</script>
</head>
<body>
<h3>IE用setAttribute设置事件要直接赋函数！</h3>
</body>
</html>
在IE6与IE7中也不能用setAttribute设置样式:dom.setAttribute("style","font-size:14px")
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var styleData = 'border:1px solid #000;background:#F1FAFA;font-weight:bold;';
var h3 = document.getElementsByTagName("h3")[0]
h3.setAttribute('style', styleData);
}
</script>
</head>
<body>
<h3>IE6与IE7看不到效果！</h3>
</body>
</html>
这时要统一用dom元素的style.csstext属性赋值比较安全。
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var styleData = 'border:1px solid #000;background:#F1FAFA;font-weight:bold;';
var h3 = document.getElementsByTagName("h3")[0]
if(!+"\v1"){
//use the .cssText hack
h3.style.setAttribute('cssText', styleData);
} else {
//use the correct DOM Method
h3.setAttribute('style', styleData);
}
}
</script>
</head>
<body>
<h3>h3.style.setAttribute('cssText', styleData);</h3>
</body>
</html>
文章引用地址：http://www.iefans.net/ie-setattribute-bug/ 作者：iefans
IE的setAttribute中与标准浏览器的有许多不同，主要表现在IE对setAttribute的功能上有些限制，就是不能用setAttribute来设定class、style于onclick等事件的值以及设置name属性，那这样就会导致setAttribute在IE浏览器里失去很多的用途！而在IE6,IE7中，如果动态生成input元素，是无法为其设置name属性的。不过当然这bug已经在最新版的IE8中被修复，详情可以浏览微软官网给出的资料。由于name属性对表单元素非常重要（在提交表单时，与value属性组成键值对，发送到后台），因此必须留意这个bug。
微软的相关资料：NAME Attribute | name Property
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var form = document.createElement("form");
var input = document.createElement("input");
var root = document.body;
input.setAttribute("name", "test");
root.appendChild(form);//注意添加顺序，添加顺序错的话，IE会内存泄漏
form.appendChild(input);
alert(form.elements.test)
}
</script>
</head>
<body>
<h3>请在IE6与IE7下浏览，当然IE8也可以，我已让IE8处在IE7的兼容模式下运作。兼容模式连bugs也兼容了……</h3>
</body>
</html>
解决办法有两个，如用innerHTML，觉得innerHTML真是一个伟大的发明，连火狐与W3C那帮死对头也不得不屈服。
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var form = document.createElement("form");
form.innerHTML = "<input name='test' type='text' />"
body.appendChild(form);
alert(form.elements.test)
}
</script>
</head>
<body>
<h3>请在IE6与IE7下浏览</h3>
</body>
</html>
另一个利用IE强大的createElement特征，它能在创建元素的同时，连属性也一起创建。
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var form = document.createElement("form");
try{
var input = document.createElement("<input type='text' name='test'>");
}catch(e){
var input = document.createElement("input");
input.setAttribute("name", "test")
}
body.appendChild(form);//注意添加顺序，添加顺序错的话，IE会内存泄漏
form.appendChild(input);
alert(form.elements.test)
}
</script>
</head>
<body>
<h3>请在IE6与IE7下浏览</h3>
</body>
</html>
但name只是冰山一角，setAttribute在设置属性时，有许多属性在IE下与标准浏览器的命名是不一样的，看一下jQuery，发现它也是不全的。许多地雷埋在这里，总有一个你迟早会中的。下面是一个详尽的参照表：左边为标准游览器的，右边是IE的。
var IEfix = {
acceptcharset: "acceptCharset",
accesskey: "accessKey",
allowtransparency: "allowTransparency",
bgcolor: "bgColor",
cellpadding: "cellPadding",
cellspacing: "cellSpacing",
"class": "className",
colspan: "colSpan",
checked: "defaultChecked",
selected: "defaultSelected",
"for": "htmlFor" ,
frameborder: "frameBorder",
hspace: "hSpace",
longdesc: "longDesc",
maxlength: "maxLength",
marginwidth: "marginWidth",
marginheight: "marginHeight",
noresize: "noResize",
noshade: "noShade",
readonly: "readOnly",
rowspan: "rowSpan",
tabindex: "tabIndex",
valign: "vAlign",
vspace: "vSpace"
}
IE不能用setAttribute为dom元素设置onXXX属性，换言之，不能用setAttribute设置事件。
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var form = document.createElement("form");
form.innerHTML = "<input name='test' type='text' />"
body.appendChild(form);
form.elements.test.setAttribute("onfocus", "alert(this.name)");
}
</script>
</head>
<body>
<h3>用setAttribute设置事件</h3>
<p>在IE下文本域获得焦点后并没有弹出预期的alert!</p>
</body>
</html>
IE要直接赋给一个函数！
var body = document.body;
var form = document.createElement("form");
form.innerHTML = "<input name='test' type='text' />"
body.appendChild(form);
if(!+"\v1"){
form.elements.test.setAttribute("onfocus", function(){alert(this.name)});
}else{
form.elements.test.setAttribute("onfocus", "alert(this.name)");
}
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var form = document.createElement("form");
form.innerHTML = "<input name='test' type='text' />"
body.appendChild(form);
if(!+"\v1"){
form.elements.test.setAttribute("onfocus", function(){alert(this.name)});
}else{
form.elements.test.setAttribute("onfocus", "alert(this.name)");
}
}
</script>
</head>
<body>
<h3>IE用setAttribute设置事件要直接赋函数！</h3>
</body>
</html>
在IE6与IE7中也不能用setAttribute设置样式:dom.setAttribute("style","font-size:14px")
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var styleData = 'border:1px solid #000;background:#F1FAFA;font-weight:bold;';
var h3 = document.getElementsByTagName("h3")[0]
h3.setAttribute('style', styleData);
}
</script>
</head>
<body>
<h3>IE6与IE7看不到效果！</h3>
</body>
</html>
这时要统一用dom元素的style.csstext属性赋值比较安全。
<!doctype html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="utf-8"/>
<title>setAttribute bug By 司徒正美</title>
<meta http-equiv="X-UA-Compatible" content="IE=7">
<script type="text/javascript">
window.onload = function(){
var styleData = 'border:1px solid #000;background:#F1FAFA;font-weight:bold;';
var h3 = document.getElementsByTagName("h3")[0]
if(!+"\v1"){
//use the .cssText hack
h3.style.setAttribute('cssText', styleData);
} else {
//use the correct DOM Method
h3.setAttribute('style', styleData);
}
}
</script>
</head>
<body>
<h3>h3.style.setAttribute('cssText', styleData);</h3>
</body>
</html>