JavaScript通过字典进行字符串翻译转换的方法

function CreateTranslator(translationTable)
function(s) s.replace(
new RegExp([k for (k in translationTable)].join('|'), 'g'),
function(str) translationTable[str]
);

var translationTable = { a:1, bb:2, b:3, c:4 };
var MyTranslater = CreateTranslator( translationTable );
MyTranslater('aabbbc'); // returns: 11234