escape,encodeuri,encodeuricomponent function Comparison

Comparison | function |escape|encodeuri|encodeuricomponent

JS encoding text involves 3 functions: Escape,encodeuri,encodeuricomponent, corresponding 3 decoding functions: Unescape,decodeuri,decodeuricomponent

1, the transfer of parameters need to use encodeuricomponent, so that the combination of the URL will not be # and other special characters truncated.

For example: <script language= "JavaScript" >document.write (' <a href= ' http://passport.baidu.com/?logout&aid=7 &u= ' +encodeuricomponent ("http://cang.baidu.com/bruce42") + ' > Exit </a> ');</script>

2, the URL jump can be used as a whole encodeURI

For example: Location.href=encodeuri ("http://cang.baidu.com/do/s?word= Baidu &ct=21");

3, JS use of data can use escape

For example: History records in the search of Tibet.

4, Escape to encode the Unicode value other than 0-255, output%u**** format, in other cases escape,encodeuri,encodeuricomponent encoding results are the same.

The most used should be encodeuricomponent, which is to convert Chinese, Korean and other special characters into utf-8 format URL encoding, So if you need to use encodeURIComponent when passing parameters to the background, you need background decoding for utf-8 support (the form is encoded in the same way as the current page encoding)

Escape does not encode 69 characters: *,+,-,.,/,@,_,0-9,a-z,a-z

There are 82 encodeURI not encoded characters:!,#,$,&, ', (,), *,+,,,-,.,/,:,;,=,?,@,_,~,0-9,a-z,a-z

There are 71 encodeuricomponent characters that are not encoded:!, ', (,), *,-,.,_,~,0-9,a-z,a-z

Escape method
Encode String objects so that they can be read on all computers,

Escape (charstring)

The required charstring parameter is any String object or literal that you want to encode.

Description
The Escape method returns a string value (Unicode format) that contains the contents of the charstring. All spaces, punctuation, accented symbols, and other non-ASCII characters are replaced with%xx encodings, where xx equals the hexadecimal number that represents the character. For example, a space returns "%20".

Characters with a value greater than 255 are stored in%UXXXX format.

Note that the escape method cannot be used to encode a Uniform Resource Identifier (URI). The encodeURI and encodeURIComponent methods should be used for encoding.

encodeURI method
Encodes a text string into a valid Uniform Resource Identifier (URI).

encodeURI (uristring)

The required uristring parameter represents an encoded URI.

Description
The encodeURI method returns an encoded URI. If you pass the encoding result to decodeURI, the original string is returned. The encodeURI method does not encode the following characters: ":", "/", ";" and "?". Please encode these characters using the encodeURIComponent method.

encodeURIComponent method
Encodes a text string as a valid component of a Uniform Resource Identifier (URI).

encodeURIComponent (encodeduristring)

The required encodeduristring parameter represents an encoded URI component.

Description
The encodeURIComponent method returns an encoded URI. If you pass the encoding result to decodeURIComponent, the original string is returned. Because the encodeURIComponent method encodes all characters, note that if the string represents a path, such as/folder1/folder2/default.html, the slash will also be encoded. This will not be valid when the encoding result is sent as a request to the Web server. If the string contains more than one URI component, use the encodeURI method.