JS将URL中的UTF-8字符串转成中文字符

将URL中的UTF-8字符串转成中文字符，如将%E7%BC%96%E7%A8%8B%E8%AF%AD%E8%A8%80  转成“编程语言”

函数getCharFromUtf8实现如下：

	//将URL中的UTF-8字符串转成中文字符串
	function getCharFromUtf8(str) {
		var cstr = "";
		var nOffset = 0;
		if (str == "")
			return "";
		str = str.toLowerCase();
		nOffset = str.indexOf("%e");
		if (nOffset == -1)
			return str;
		while (nOffset != -1) {
			cstr += str.substr(0, nOffset);
			str = str.substr(nOffset, str.length - nOffset);
			if (str == "" || str.length < 9)
				return cstr;
			cstr += utf8ToChar(str.substr(0, 9));
			str = str.substr(9, str.length - 9);
			nOffset = str.indexOf("%e");
		}
		return cstr + str;
	}

	//将编码转换成字符
	function utf8ToChar(str) {
		var iCode, iCode1, iCode2;
		iCode = parseInt("0x" + str.substr(1, 2));
		iCode1 = parseInt("0x" + str.substr(4, 2));
		iCode2 = parseInt("0x" + str.substr(7, 2));
		return String.fromCharCode(((iCode & 0x0F) << 12) | ((iCode1 & 0x3F) << 6) | (iCode2 & 0x3F));
	}

//获取当前页面的URL

var url = location.href;

//截取传递参数
var paraString = url.substring(url.indexOf("=") + 1, url.length);