Node.js里转码

gistfile1.js

var iconvLite = require('iconv-lite');

global.convertEncoding = function(str, encoding){
  encoding = encoding || 'utf8';
  if (encoding === 'utf8') {
    return iconvLite.decode(new Buffer(str, 'binary'), 'gb2312');
  }else{
    return iconvLite.encode(str, 'gb2312').toString('binary');
  }
};