用js实现编码转换gb2312转utf8

bzlrj

[size=medium]在文件编码为gb2312的html文件中，提交表单到utf8页面中会出现乱码的现象,针对这样的问题既可以从前端下手也可以从后端进行处理，为了方便，决定从前端下手，从网上搜集到了相关js特分享如下：[code="js"]<script language="JavaScript"> <!-- function utf8(wide) { var c, s; var enc = ""; var i = 0; while(i<wide.length) { c= wide.charCodeAt(i++); // handle UTF-16 surrogates if (c>=0xDC00 && c<0xE000) continue; if (c>=0xD800 && c<0xDC00) { if (i>=wide.length) continue; s= wide.charCodeAt(i++); if (s<0xDC00 || c>=0xDE00) continue; c= ((c-0xD800)<<10)+(s-0xDC00)+0x10000; } // output value if (c<0x80) enc += String.fromCharCode(c); else if (c<0x800) enc += String.fromCharCode(0xC0+(c>>6),0x80+(c&0x3F)); else if (c<0x10000) enc += String.fromCharCode(0xE0+(c>>12),0x80+(c>>6&0x3F),0x80+(c&0x3F)); else enc += String.fromCharCode(0xF0+(c>>18),0x80+(c>>12&0x3F),0x80+(c>>6&0x3F),0x80+(c&0x3F)); } return enc; } var hexchars = "0123456789ABCDEF"; function toHex(n) { return hexchars.charAt(n>>4)+hexchars.charAt(n & 0xF); } var okURIchars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-"; function encodeURIComponentNew(s) { var s = utf8(s); var c; var enc = ""; for (var i= 0; i<s.length; i++) { if (okURIchars.indexOf(s.charAt(i))==-1) enc += "%"+toHex(s.charCodeAt(i)); else enc += s.charAt(i); } return enc; } alert(encodeURIComponentNew("中文")) alert(decodeURIComponent(encodeURIComponentNew("中文"))) // --> </script>[/code]