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getAttribute for IE7

getAttribute 

大部分介绍都说仅仅有一个。包含w3cschool。

事实上这种方法在iE7下有两个參数。

msdn 上查到的。

简单翻一下
0 是默认情况,不区分大写和小写!
1 区分大写和小写
2 返回字符串,这个加不加我没发现有什么差别!
4仅对url有效!比方属性的值为/posetedit/31234,加上这个參数会加上域名,自己主动补全url,变为http://xxx.com//posetedit/31234

注:这些事实上仅仅针对ie7(包含IE7)曾经的版本号

源文档:

Syntax

object.getAttribute(strAttributeName, lFlags)

Parameters

strAttributeName [in]

Type: String

String that specifies the name of the attribute.

lFlags [in, optional]

Type: Integer

Integer that specifies one or more of the following flags:

0

Default. Performs a property search that is not case-sensitive, and returns an interpolated value if the property is found.

1

Performs a case-sensitive property search. To find a match, the uppercase and lowercase letters in strAttributeName must exactly match those in the attribute name.

2

Returns attribute value as a String. This flag does not work for event properties.

4

Returns attribute value as a fully expanded URL. Only works for URL attributes.

Return value

Type: Variant

Variant that returns a StringVariant of type Integer, or Boolean value as defined by the attribute. If the attribute is not present, this method returns null.



msdn:http://msdn.microsoft.com/en-us/library/ms536429(VS.85).aspx

getAttribute for IE7