js编码与反编码
escape(var string);
encodeURI(var string);
encodeURIComponent(var string);
unescape(var string);
decodeURIComponent(var string);
decodeURI(var string);
escape(var string);
encodeURI(var string);
encodeURIComponent(var string);
unescape(var string);
decodeURIComponent(var string);
decodeURI(var string);