Javascript中escape(),_encodeURI()和encodeURIComponent()之精析与比较.doc

escape(), encodeURI()和 encodeURIComponent()是在 Javascript 中用于编码字符串的三个常用的方法，

而他们之间的异同却困扰了很多的 Javascript 初学者，今天我就在这里对这三个方法详细地分析与比较一

下。

escape() 方法

MSDN JScript Reference 中如是说：

The escape method returns a string value (in Unicode format) that contains the contents of [the

argument]. All spaces, punctuation, accented characters, and any other non-ASCII characters are

replaced with %xx encoding, where xx is equivalent to the hexadecimal number representing the

The escape and unescape functions let you encode and decode strings. The escape function returns

the hexadecimal encoding of an argument in the ISO Latin character set. The unescape function returns

the ASCII string for the specified hexadecimal encoding value.

鄙人译：escape 和 unescape 方法能够帮助你编码和解码字符串。escape 方法对于 ISO Latin 字符集中

的字符组成的参数，返回其 16 进制编码。相对应的，unescape 方法则能将 16 进制编码形式的参数转化

成为其 ASCII 码形式。

encodeURI()方法

MSDN JScript Reference 中如是说：

The encodeURI method returns an encoded URI. If you pass the result to decodeURI, the original string

is returned. The encodeURI method does not encode the following characters: ":", "/", ";", and "?". Use

two, or three escape sequences representing the UTF-8 encoding of the character.