jQuery替换为数组

我想用我的“替换”列表替换textarea的内容。 所以“嗨23”将是“\ u041D \ u0456 23”。 什么是我的错?

$("textarea#comment").val(function(i, val) { return val.replace(/*the first letter (eg A)*/g, "*the second row eg \u0410*"); }); replacements = { "A": "\u0410", "B": "\u0412", "C": "\u0421", "H": "\u041D", "I": "\u0406", "J": "\u0408", "M": "\u041C", "O": "\u041E", "P": "\u0420", "S": "\u0405", "T": "\u0422", "V": "\u0474", "Y": "\u04AE", "a": "\u0430", "c": "\u0441", "e": "\u0435", "h": "\u04BB", "i": "\u0456", "j": "\u0458", "l": "\u04C0", "o": "\u043E", "p": "\u0440", "s": "\u0455", "y": "\u0443", "v": "\u0475"; } 

 var replacements = { "A": "\\u0410", "B": "\\u0412", "C": "\\u0421", "H": "\\u041D", "I": "\\u0406", "J": "\\u0408", "M": "\\u041C", "O": "\\u041E", "P": "\\u0420", "S": "\\u0405", "T": "\\u0422", "V": "\\u0474", "Y": "\\u04AE", "a": "\\u0430", "c": "\\u0441", "e": "\\u0435", "h": "\\u04BB", "i": "\\u0456", "j": "\\u0458", "l": "\\u04C0", "o": "\\u043E", "p": "\\u0440", "s": "\\u0455", "y": "\\u0443", "v": "\\u0475" } $("textarea#comment").val(function(i, val) { val = val.split(''); $.each(val, function(i,e){ val[i] = replacements[e] ? replacements[e] : e; }); return val.join(''); }); 

http://jsfiddle.net/6A2JG/