Chinese COOKIE_PHP tutorial for reading PHP settings using Javascript

Agni Website Building Academy (Bkjia.Com) PHP Tutorial The PHP program writes some Chinese data in COOKIE, but when it is read with Javascript, it is read and cannot be displayed correctly? I believe many friends have encountered this situation. I searched the day before yesterday and found a solution: PHP writes COOKIE in UTF-8 encoding, and JS just decodes it when reading it out, because Javascript uses it internally. It is Unicode encoding.

The following is the quoted content:
/**
*
* URL encode / decode
*
**/

var Url = {

// public method for url encoding
encode : function (string) {
return escape(this._utf8_encode(string));
},

// public method for url decoding
decode : function (string) {
return this._utf8_decode(unescape(string));
},

// private method for UTF-8 encoding
_utf8_encode : function (string) {
string = string.replace(/rn/g,"n");
var utftext = "";

for (var n = 0; n < string.length; n++) {

var c = string.charCodeAt(n);

if (c < 128) {
utftext += String.fromCharCode(c);
}
else if((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
}
else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}

}

return utftext;
},

// private method for UTF-8 decoding
_utf8_decode : function (utftext) {
var string = "";
var i = 0;
var c = c1 = c2 = 0 ;

while ( i < utftext.length ) {

c = utftext.charCodeAt(i);

if (c < 128) {
191) && (c < i++;
}
else if((c > 191) && (c < 224)) {
             c2 = utftext.charCodeAt(i+1);
             string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
          i += 2;​ string += String .fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}

}

return string;
}

}

/**
* This section is for reading Cookie
*/
function GetCookie(sName)
{
var mycookie = document.cookie.split("; ");
for (var i = 0; i < mycookie.length; i++)
{
var cookie1 = mycookie[i].split("=");
if (cookie1[0] == sName)
{
               return Url.decode(cookie1[1]);
                                                                                                                                                

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