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ÀÚ¹Ù½ºÅ©¸³Æ®¿¡¼­´Â document.cookie °´Ã¼¸¦ ÅëÇØ ÄíŰ¿¡ Á¢±ÙÇÒ ¼ö ÀÖ½À´Ï´Ù. ÀÌ °´Ã¼´Â ´ëÀÔ¿¬»êÀÚ¸¦ ÅëÇØ »õ·Î¿î °ªÀ» ³»ºÎ ÄíŰ ¸®½ºÆ®¿¡ Ãß°¡ÇÒ ¼ö ÀÖ½À´Ï´Ù.

document.cookie = "ID=123456789";
document.cookie = "PW=abcdefghi";

À§¿Í °°Àº ÀÚ¹Ù½ºÅ©¸³Æ®¸¦ ¼öÇàÇϸé ÀϹÝÀûÀÎ ´ëÀÔ¹®Ã³·³ Äí۸í ID°¡ ¾ø¾îÁö´Â °ÍÀÌ ¾Æ´Ï¶ó ³»ºÎ ÄíŰ ¸®½ºÆ®¿¡ ID¶ó´Â ÄíŰ¿Í PW¶ó´Â Äí۰¡ Ãß°¡µÉ °ÍÀÔ´Ï´Ù.
¸¸¾à Äí۸íÀÌ ÀÏÄ¡ÇÏ´Â °ÍÀÌ ³»ºÎ ÄíŰ ¸®½ºÆ®¿¡ ÀÖ¾ú´Ù¸é »õ·Î¿î °ªÀ¸·Î ´ëÄ¡µÉ °ÍÀÔ´Ï´Ù.

ÀÌ¹Ì »ý¼ºµÇ¾î ÀÖ´Â Äí۸¦ ÂüÁ¶ÇÏ·Á¸é document.cookie °´Ã¼¸¦ ¹®ÀÚ¿­Ã³·³ ´Ù·ç¸é µË´Ï´Ù. ÀÌ ¹®ÀÚ¿­Àº Äí۸í°ú Äí۰ªÀ¸·Î ±¸¼ºµÇ¾î ÀÖ½À´Ï´Ù. °¢ Äí۸í°ú Äí۰ªÀº µîÈ£(=)·Î ±¸ºÐµÇ¾î ÀÖ°í, °¢°¢ÀÇ ÄíŰ´Â ¼¼¹ÌÄÝ·Ð(;)À¸·Î ±¸ºÐµÇ¾î ÀÖ½À´Ï´Ù. À§¿Í °°ÀÌ Äí۰¡ »ý¼ºµÇ¾úÀ» ¶§ document.cookie °´Ã¼¸¦ ÂüÁ¶Çϸé "ID=123456789;PW=abcdefghi"¶ó´Â ¹®ÀÚ¿­À» ¾òÀ» ¼ö ÀÖ½À´Ï´Ù. ÀÌ ¹®ÀÚ¿­À» °¡Áö°í ¹®ÀÚ¿­ ¸Þ¼ÒµåÀÎ indexOf() ¶Ç´Â substring() ÇÔ¼ö¸¦ ÀÌ¿ëÇÏ¸é °¢ ÄíŰ¿¡ ´ëÇÑ Á¤º¸¸¦ ºÐ¸®ÇÒ ¼ö ÀÖÀ» °ÍÀÔ´Ï´Ù. ÀÌ·¯ÇÑ ¿¹´Â ¾Æ·¡¿¡ ÀÖ´Â »ç¿ëÀÚ Á¤ÀÇ ÇÔ¼ö getCookie()¸¦ ÂüÁ¶Çϱ⠹ٶø´Ï´Ù.

PHP¿¡¼­¿Í ¸¶Âù°¡Áö·Î À¯È¿ÇÑ µµ¸ÞÀΰú À¯È¿ÇÑ °æ·Î¿¡¼­ ¸¸µé¾î ³½ ÄíŰ Á¤º¸¸¸ÀÌ document.cookieÀ» ÅëÇØ¼­ º¼ ¼ö ÀÖ½À´Ï´Ù.

document.cookie °´Ã¼¸¦ Á÷Á¢ »ç¿ëÇÒ ¼öµµ ÀÖÁö¸¸, ´ëºÎºÐ ¾Æ·¡¿Í °°ÀÌ ¹Ì¸® Á¤ÀÇµÈ ÇÔ¼ö setCookie(), getCookie(), delCookie()¸¦ ÅëÇØ Äí۸¦ ´Ù·ç°Ô µË´Ï´Ù.

ÄíŰ ¼³Á¤Çϱâ

PHPÀÇ setcookie() ÇÔ¼ö¿Í´Â ´Þ¸® expires(À¯È¿±â°£) ¸Å°³º¯¼öÀÇ ´ÜÀ§´Â õºÐÀÇ ÀÏÃÊ´ÜÀ§·Î ¼³Á¤ÇÕ´Ï´Ù. secure°¡ ´Ù¼Ò ´Ù¸£±â´Â ÇÏÁö¸¸ ´Ù¸¥ ¸Å°³º¯¼ö´Â PHP¿Í º°´Ù¸£Áö ¾Ê½À´Ï´Ù. ÀúÀåµÈ ÄíŰ Á¤º¸¸¦ º¸¸é ¹®ÀÚ¿­ ¼Ò½º Â÷¿ø¿¡¼­ PHP¿¡¼­ ´Ù·ê ¶§¿Í µ¿ÀÏÇÏÁö ¾Ê½À´Ï´Ù. ¿Ö³ÄÇϸé PHP¿¡¼­ ÀÎÄÚµù/µðÄÚµùÇÏ´Â ¹æ½Ä°ú ÀÚ¹Ù½ºÅ©¸³Æ®¿¡¼­ ÀÎÄÚµù/µðÄÚµùÇÏ´Â ¹æ½ÄÀÌ ´Ù¸£±â ¶§¹®ÀÔ´Ï´Ù.
µû¶ó¼­ ¾çÂÊÀÇ ÇÔ¼ö¸¦ È¥¿ëÇÏ¿© »ç¿ëÇϴµ¥´Â ¹®Á¦°¡ ÀÖÀ¸´Ï ÁÖÀÇÇϱ⠹ٶø´Ï´Ù. ¿©±â¿¡ Á¤ÀÇµÈ setCookie() ÇÔ¼ö´Â "Designing Dynamic Web Pages with JavaScript"ÀÇ ÀúÀÚ Nick HeinleÀÇ ÀÛǰÀ» º¯Çü½ÃŲ °ÍÀÔ´Ï´Ù. º»·¡ÀÇ ÇÔ¼ö´Â ¼­ÀûÀ» ÂüÁ¶ÇϽñ⠹ٶø´Ï´Ù. ÀÌ ¿ø¼­¿¡ ´ëÇÑ ¹ø¿ª¼­´Â "ÀÚ¹Ù½ºÅ©¸³Æ®·Î ´ÙÀ̳ª¹Í À¥ÆäÀÌÁö µðÀÚÀÎÇϱâ"¶ó´Â Á¦¸ñÀ¸·Î ³ª¿Í ÀÖ½À´Ï´Ù.

function setCookie(name, value, expires, path, domain, secure) {
  secure = (secure == null) ? false : secure;
  var exp = new Date();
  exp.setTime(expires);
  document.cookie = name + "=" + escape(value)
    + ((expires == null) ? "" : ("; expires=" + exp.toGMTString()))
    + ((path == null) ? "" : ("; path=" + path))
    + ((domain == null) ? "" : ("; doamin=" + domain))
    + ((secure == true) ? "; secure" : "");
}

¿¹¸¦ µé¾î ¾Æ·¡¿Í °°ÀÌ °¢ ¸Å°³º¯¼ö¸¦ ÁöÁ¤ÇÒ ¼ö ÀÖÀ¸¸ç, ÀÌ ¶§ À¯È¿±â°£Àº 1½Ã°£ÀÌ µË´Ï´Ù.

setCookie(
  "mycookie",               // Äí۸í
  "cookie_value",           // Äí۰ª
  exp.getTime()+1000*3600,  // À¯È¿ ±â°£
  "/exam",                  // À¯È¿ µð·ºÅ丮
  ".phpclass.com"           // À¯È¿ µµ¸ÞÀÎ
);

ÄíŰ Á¤º¸ Àоî¿À±â

Äí۸í°ú °ªÀº document.cookie °´Ã¼¿¡ ÅëÇØ ÂüÁ¶µÉ ¼ö ÀÖ½À´Ï´Ù. ÀÚ¹Ù½ºÅ©¸³Æ®°¡ ÀúÀåÇÏ´Â ÄíŰÀÇ ÇüÅ´ ¾Æ·¡¿Í °°À¸¸ç °¢°¢ÀÇ name=value ½ÖÀº ¼¼¸®Äݷаú °ø¹éÀ¸·Î ±¸ºÐµÇ¾îÁö°í Á¦ÀÏ ¸¶Áö¸· °ª¿¡´Â ¼¼¹ÌÄÝ·ÐÀÌ ¾ø½À´Ï´Ù.
name1=value1; name2=value2; name3=value3

ÄíŰÀÇ °ªÀ» Á» ´õ ½±°Ô ¾ò±â À§ÇØ ´ÙÀ½°ú °°ÀÌ getCookie() ÇÔ¼ö¸¦ Á¤ÀÇÇÏ¿© »ç¿ëÇÕ´Ï´Ù. ÀÌ ÇÔ¼ö´Â Nick HeinleÀÇ ÀÛǰÀ» ±×´ë·Î °¡Á®¿Ô½À´Ï´Ù.

// Heinle's function for retrieving a cookie.
function getCookie(name) {
  var cname = name + "=";
  var dc = document.cookie;
  if (dc.length > 0) {
    begin = dc.indexOf(cname);
    if (begin != -1) {
      begin += cname.length;
      end = dc.indexOf(";", begin);
      if (end == -1)
        end = dc.length;
      return unescape(dc.substring(begin, end));
    }
  }
  return null;
}

ÀÌ ÇÔ¼ö´Â ´ÜÁö ÄíŰ¸í¸¸ ÁöÁ¤ÇÏ¿© ÁÖ¸é document.cookie °´Ã¼¸¦ °Ë»çÇÏ¿© ÇØ´ç ÄíŰÀÇ °ªÀ» µÇµ¹·Á ÁÝ´Ï´Ù. ÀúÀåµÈ Äí۰¡ ¾ø´Â °æ¿ì¿¡´Â null °ªÀ» µÇµ¹·Á ÁÝ´Ï´Ù.
value = getCookie ("mycookie");

ÄíŰ »èÁ¦Çϱâ

¸¶Áö¸·À¸·Î Äí۸¦ »èÁ¦ÇÒ ¼ö ÀÖ´Â ÇÔ¼ö delCookie()¸¦ »ìÆìº¸°Ú½À´Ï´Ù. ÀÌ ÇÔ¼ö´Â ÄíŰ ¼¾Ãß·²(www.cookiecentral.com)¿¡ ÀÖ´Â DorchtÀÇ ÇÔ¼ö¸¦ ±×´ë·Î °¡Á®¿Ô½À´Ï´Ù.

function delCookie (name, path, domain) {
  if (getCookie(name)) {
    document.cookie = name + "="
        + ((path == null) ? "" : "; path=" + path)
        + ((domain == null) ? "" : "; domain=" + domain)
        + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

delCookie() ÇÔ¼ö´Â ÄíŰ ÆÄÀÏ¿¡¼­ Äí۸¦ »èÁ¦Çϱâ À§ÇØ »ç¿ëµÇ´Â ÇÔ¼öÀÌ´Ù. delCookie() ÇÔ¼ö¸¦ »ç¿ëÇϱâ À§Çؼ­´Â º¸Åë ÄíŰ¸í¸¸ ³Ñ°ÜÁÖ¸é µÈ´Ù. ±×·¯³ª setCookie() ÇÔ¼ö¿¡¼­ Äí۸¦ ±¸¿ï ¶§ path¿Í domainÀ» ÁöÁ¤ÇÏ¿´À¸¸é, delCookie() ÇÔ¼ö·Î Áö¿ï ¶§µµ µ¿ÀÏÇÒ path¿Í domainÀ» ºÐ¸íÈ÷ ÁöÁ¤ÇØ ÁÖ¾î¾ß ÇÕ´Ï´Ù. ¿¹¸¦ µé¾î, "mycookie" ÄíŰ¿¡ ´ëÇÑ Á¤º¸´Â ´ÙÀ½°ú °°ÀÌ Áö¿ï ¼ö ÀÖ½À´Ï´Ù.

delCookie("mycookie", "/exam", ".phpclass.com");

±¸µÎÁ¡ ÀÎÄÚµù/µðÄÚµù

ºê¶ó¿ìÀú°¡ µîÈ£(=)¿Í ¼¼¹ÌÄÝ·Ð(;)À» °¢ Äí۸¦ ºÐ¸®½ÃŰ´Â ±¸ºÐÀÚ·Î »ç¿ëÇϱ⠶§¹®¿¡, À̰͵éÀº ÀÚ½ÅÀÌ ÀúÀåÇÏ´Â ÅØ½ºÆ®¾È¿¡ ³ÖÀ» ¼ö°¡ ¾ø½À´Ï´Ù. ÀÌ·¯ÇÑ Æ¯¼ö Äڵ带 Äí۰ª¿¡ ÀúÀåÇÏ·Á¸é document.cookie °´Ã¼¿¡ ¹®ÀÚ¿­À» ³Ñ±â±â Àü¿¡ escape()¸¦ »ç¿ëÇÏ¿© ÀÎÄÚµùÇØ¾ß Çϰí, unescape()¸¦ »ç¿ëÇÏ¿© º¹±¸ÇÏ¿©¾ß ÇÕ´Ï´Ù.

escape() ÇÔ¼ö

ÀϹݹ®ÀÚ¸¦ ASCII Çü½Ä(URL Çü½Ä; Æû¿¡¼­ º¸³»¾îÁø %°¡ ºÙÀº ¹®ÀÚ) ¹®ÀÚ·Î º¯È¯ÇÕ´Ï´Ù. ¿¹¸¦ µé¾î ¾Æ·¡¿Í °°ÀÌ "ASCII &? ¹®ÀÚ"¶ó´Â ¹®ÀÚ¿­À» escape() ÇÔ¼ö·Î ³Ñ°ÜÁÖ¸é "ASCII%20%26%3F%20%uBB38%uC790"¶ó´Â ¹®ÀÚ¿­À» µÇµ¹·Á ¹Þ½À´Ï´Ù.

var encode = escape("ASCII &? ¹®ÀÚ");

unescape() ÇÔ¼ö

ASCII Çü½Ä(URL Çü½Ä) ¹®ÀÚ¸¦ ÀϹݹ®ÀÚ·Î º¯È¯ÇÕ´Ï´Ù. ¿¹¸¦ µé¾î ¾Æ·¡¿Í °°ÀÌ "ASCII%20%26%3F%20%uBB38%uC790"¶ó´Â ¹®ÀÚ¿­À» unescape() ÇÔ¼ö·Î ³Ñ°ÜÁÖ¸é "ASCII &? ¹®ÀÚ"¶ó´Â ¹®ÀÚ¿­À» µÇµ¹·Á ¹Þ½À´Ï´Ù.

var decode = unescape("ASCII%20%26%3F%20%uBB38%uC790");
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