What are the ways to set encoding in javascript

How to set encoding in javascript: 1. The escape() function can encode a string; 2. The encodeURI() function can encode a string as a URI; 3. The encodeURIComponent() function can Encode the string as a URI component.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

Several ways to set encoding in javascript

escape() function

escape() function can encode a string so that it can be All computers read this string.

Syntax

Parameters	Description
string	Required. The string to be escaped or encoded.

Return Value

A copy of the encoded string. Some of these characters are replaced with hexadecimal escape sequences.

Explanation

This method does not encode ASCII letters and numbers, nor does it encode the following ASCII punctuation marks: * @ - _ . / . All other characters will be replaced by escape sequences.

Tips and Notes

Tip: You can use unescape() to decode escape() encoded strings.

Note: ECMAScript v3 deprecates the use of this method, applications should use decodeURI() and decodeURIComponent() instead.

Example:

encodeURI() function

encodeURI() function can Encode the string as a URI.

Syntax

##URIstring Required. A string containing the URI or other text to be encoded.

Parameters	Description

Return value

A copy of the URIstring, where some characters will be replaced by hexadecimal escape sequences .

Explanation

This method does not encode ASCII letters and numbers, nor does it encode these ASCII punctuation marks: - _ . ! ~ * ' ( ).

The purpose of this method is to completely encode the URI, so the encodeURI() function will not escape the following ASCII punctuation marks that have special meanings in the URI:

;/? :@&= $,

#Tips and comments

Can be decoded with decodeURI()

Tips: If the URI component Contains delimiters, such as ? and #, you should use the encodeURIComponent() method to encode each component separately.

Example

encodeURIComponent() function

encodeURIComponent() function can use strings as URI components. coding.

Syntax

encodeURIComponent(URIstring)

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ParametersDescriptionURIstring Required. A string containing URI components or other text to be encoded.

Return value

A copy of the URIstring, where some characters will be replaced by hexadecimal escape sequences .

Explanation

This method does not encode ASCII letters and numbers, nor does it encode these ASCII punctuation marks: - _ . ! ~ * ' ( ).

Other characters (such as :;/?:@&= $,# these punctuation marks used to separate URI components) are replaced by one or more hexadecimal escape sequences.

Tips and Notes

Tip: Please note that the encodeURIComponent() function is different from the encodeURI() function in that the former assumes that its parameters are part of the URI (such as protocol, hostname, path, or query string). The encodeURIComponent() function therefore escapes the punctuation characters that separate parts of the URI.

Example

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