node. JS Encoding Conversion

node. JS's own ToString () method does not support GBK, so it is necessary to load a third-party library when converting to Chinese, the following two encoding libraries, iconv-lite and encoding are recommended.

What are    iconv, iconv-lite and encoding?    iconv: is a standard character set conversion interface in Unix-like systems for converting between different character set encodings, first appearing in the HP-UX system.  iconv-lite: is a pure JS implementation of ICONV, the supported encodings include node. JS native code: UTF8, UCS2, ASCII, binary, base64; support for widely used single-byte encoding: Windows 125x Family, ISO-8859 family, Ibm/dos codepages, Macintosh family, KOI8 family, Latin1, us-ascii; multi-byte encoding: GBK, gb2313, Big5, cp950 。 Officials claim to be quicker than node-iconv.  encoding: Is the Node-iconv and iconv-lite again encapsulation, encoding first call Node-iconv, if Node-iconv cannot parse, then call Iconv-lite as an alternative.    iconv-lite installation uses    1. Installs the  $ npm install iconv-lite  2. Use  var Iconv = require (' Iconv-lite ');  //Convert from a encoded buffer to JS STRING.STR = Iconv.decode (buf, ' WI n1251 ');  //Convert from JS string to an encoded BUFFER.BUF = Iconv.encode ("Sample input string", ' win1251 ');  // Check if encoding is supportediconv.encodingexists ("Us-ascii") to copy code   3. Performance comparison of Iconv-lite and Node-iconv  operation             [EMAIL&NBSp;protected]   [email protected] ---------------------------------------------------------- Encode (' win1251 ')     ~115 MB/s     ~230 mb/sdecode (' win1251 ')     ~95 MB/s     &N bsp;~130 mb/s  encoding installation uses    1. Installs the  $ npm install encoding  2. Use the  encoding module to convert () in one way, using the following method: Encoding.convert (text, Tocharset, Fromcharset).  text: The object that needs to be converted, either a buffer or a string object. Tocharset: the converted encoding. Fromcharset: The encoding before conversion, the default is UFT8. The converted input result is a buffer object.  var encoding = require (' encoding ');  var result = Encoding.convert ("Õäöü", "latin_1"); Console.log (result); <buffer d5 c4 d6 dc>   Chapter:jschardet    what is Jschardet?  jschardet is the jschardet of António Afonso from Python Chardet to JavaScript.    1. Installs the  $ npm install jschardet  2. Use   var Jschardet = require ("Jschardet")  //"Àíàçã" in Utf-8jschardet.detect ("\xc3\xa0\xc3\xad\xc3\ Xa0\xc3\xa7\xc3\xa3 ")//{Encoding: "Utf-8", confidence:0.9690625} //"secondary common standard" in Big5 jschardet.detect ("\xa6\xb8\xb1\x60\xa5\ Xce\xb0\xea\xa6\x72\xbc\xd0\xb7\xc7\xa6\x72\xc5\xe9\xaa\xed ")//{encoding:" Big5 ", confidence:0.99}

Node. JS Encoding Conversion