Escape () method:
The specified string is encoded using the ISO Latin character set. All spaces, punctuation, special characters, and other non-ASCII characters will be converted into%XX-formatted character encodings (XX equals the encoded 16 digits of the character in the character set table). For example, spaces's corresponding encoding is%20. The Unescape method is the opposite. Characters that will not be encoded by this method: @ */+
English explanation: MSDN JScript reference:the Escape method returns a string value (in Unicode format) that contains the contents of [t He argument]. All spaces, punctuation, accented characters, and no other non-ascii characters-are with replaced%xx, where xx is equivalent to the hexadecimal number representing the character. For example, a and returned as "%20."
Edge Core Javascript guide:the escape and unescape functions let you encode and decode strings. The escape function returns the hexadecimal encoding of the argument in the ISO Latin character set. The Unescape function returns the ASCII string for the specified hexadecimal encoding value.
encodeURI () Method: Converts the URI string into a string in escape format using the UTF-8 encoding format. Characters that will not be encoded by this method:! @ # $& * () =:/;? + '
English explanation: MSDN JScript reference:the encodeURI method returns a encoded URI. If you are the result of the decodeURI, the original string is returned. The encodeURI method does not encode the following characters: ":", "/", ";", and "?". Use encodeURIComponent to encode these characters. Edge Core Javascript guide:encodes a uniform Resource Identifier (URI) by replacing each instance of certain characters B Y one, two, or three escape sequences representing the UTF-8 encoding of the character
encodeURIComponent () Method: Converts the URI string into a string in escape format using the UTF-8 encoding format. This method encodes more characters than encodeURI (), such as/or characters. So if a string contains several parts of the URI, this method cannot be encoded, otherwise the URL will display an error after the/character is encoded. Characters that will not be encoded by this method:! * ( )
English explanation:msdn jscript reference: 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. mozilla Developer Core Javascript Guide: Encodes a Uniform Resource identifier (URI) compoNent by replacing each instance of certain characters by one, two, or three escape sequences representing the utf-8 encoding of the character.
Copy Code code as follows:
Therefore, for Chinese strings, you only need to use escape if you do not want to convert the string encoding format into a UTF-8 format (such as when the original page and the target page charset are consistent). If your page is GB2312 or other code, and the page that accepts the parameter is UTF-8 encoded, you should use encodeURI or encodeuricomponent.
In addition, Encodeuri/encodeuricomponent was introduced after javascript1.5, and escape was in the javascript1.0 version.
English Note: the escape () method does not encode the + character which is interpreted as a space on the server side as well as generated by forms with spaces in their fields. due to this shortcoming, you should avoid use of escape () Whenever possible. the best alternative is usually encodeuricomponent (). Use of the encodeuri () method is a bit more specialized than escape () in that it encodes for URIs [REF] as opposed to the querystring, which is part of a url. use this Method when you need to encode a string to be used for any resource thAt uses uris and needs certain characters to remain un-encoded. Note that this method does not encode the ' character, as it is a valid character within URIs.Lastly, the encodeURIComponent () method should be used in most cases when encoding a single component of a uri. this method will Encode certain chars that would normally be recognized as special chars for uris so that many components may be included. Note that this method does not encode the ' character, as it is a valid character within uris.
