一個javascript cookie讀取實現代碼

代碼如下

複製代碼

<script type="text/javascript"> <!-- function cookie(name, value, options) {     if (typeof value != 'undefined') { // name and value given, set cookie         options = options || {};         if (value === null) {             value = '';             options.expires = -1;         }         var expires = '';         if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {             var date;             if (typeof options.expires == 'number') {                 date = new Date();                 date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));             } else {                 date = options.expires;             }             expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE         }         var path = options.path ? '; path=' + options.path : '';         var domain = options.domain ? '; domain=' + options.domain : '';         var secure = options.secure ? '; secure' : '';         document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');     } else { // only name given, get cookie         var cookieValue = null;         if (document.cookie && document.cookie != '') {             var cookies = document.cookie.split(';');             for (var i = 0; i < cookies.length; i++) {                 var cookie = cookies[i];                 // Does this cookie string begin with the name we want?                 if (cookie.substring(0, name.length + 1) == (name + '=')) {                     cookieValue = decodeURIComponent(cookie.substring(name.length + 1));                     break;                 }             }         }         return cookieValue;     } }; function getCookieURL(){  var url="/union/dataHistroyQuery.jsp?type=2";  var b1=cookie("b1");  if( b1 && b1.length > 0){   url=b1;  }  location.href=url; } //--> </script>