js文件Cookie存取值的使用

 這篇文章主要介紹了js文件Cookie存取值的使用,需要的朋友可以參考下

代碼如下: /*  Cookie工具  使用方法:  //存值  var value = "7天";  tools.cookie("day",value, {expires:7}); //將字符串:"7天" 以 "day"這個key保存到cookie中5天  //取值  var v = tools.cookie("day"); //用 "day" 這個key從cookie取出值  */  tools.cookie = function(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.toGMTString)) {  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.toGMTString(); // 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 = jQuery.trim(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;  }  };