escape() 方法

MSDN JScript Reference中如是說：

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 character. For example, a space is returned as "%20."

鄙人譯：escape方法以Unicode格式返回一個包含傳入參數內容的string類型的值。 Escape方法會將傳入參數中所有的空格、標點符號、重音字符以及其它任何非ASCII字符替換為%xx的編碼形式，其中xx與其所表示的字符的16進制數表示形式相同。如空格字符的16進制表示形式為0x20，則此時xx應為20，即escape(‘ ') 返回“%20”。

Mozilla Developer Core Javascript Guide中如是說：

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.

鄙人譯：escape和unescape方法能夠幫助你編碼和解碼字符串。escape方法對于ISO Latin字符集中的字符組成的參數，返回其16進制編碼。相對應的，unescape方法則能將16進制編碼形式的參數轉化成為其ASCII碼形式。

encodeURI()方法

MSDN JScript Reference中如是說：

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 encodeURIComponent to encode these characters.

鄙人譯：encodeURI方法返回一個經過編碼的URI。如果將encodeURI方法的編碼結果傳遞給decodeURI方法作參數，則能得到原始的未編碼的字符串。需要注意到是encodeURI方法不編碼如下字符":", "/", ";", and "?"。如果想要編碼這些字符，請使用encodeURIComponent方法。

Mozilla Developer Core Javascript Guide中如是說：

Encodes a Uniform Resource Identifier (URI) by replacing each instance of certain characters by one, two, or three escape sequences representing the UTF-8 encoding of the character.

鄙人譯：通過將每個屬于特定的字符集合的字符替換為一個、兩個或者三個（為什么是“一個、兩個或者三個”本人也沒有搞懂，望高人賜教）使用UTF-8編碼來表示這個字符的escape序列來編碼一個URI。如 ~!@#$%^&*(){}[]=:/,;?+/'"http:// 將被替換為 ~!@#$%25%5E&*()%7B%7D%5B%5D=:/,;?+'%22%5C

encodeURIComponent()方法

MSDN JScript Reference中如是說：

The encodeURIComponent method returns an encoded URI. If you pass the result to decodeURIComponent, the original string is returned. Because the encodeURIComponent method encodes all characters, be careful if the string represents a path such as /folder1/folder2/default.html. The slash characters will be encoded and will not be valid if sent as a request to a web server. Use the encodeURI method if the string contains more than a single URI component.