关于 cookie 使用中遇到的问题

   前段时间在一个项目中涉及到cookie的存取，于是打算封装一个 cookie 的CRUD 。按理来说，这本身是一个很简单的问题，不注意的话简单的问题也有大坑。

 1 /** 2  * Set or get cookie ;parse to object 3  * 4  *@date 2015-04-11 5  * 6  *@author 飘摇的枫叶 7  * 8  * 9  * 10 */ 11 'use strict'; 12 (function (window) { 13   // class2type refer to zepto.js $.type(obj) ## https://github.com/madrobby/zepto 14   var class2type = {}, 15     toString = class2type.toString; 16   "Boolean Number String Function Array Date RegExp Object Error".split(" ").forEach(function(name) { 17     class2type["[object " + name + "]"] = name.toLowerCase(); 18   }); 19  20   var _qcookie = { 21     cookies: document.cookie, 22     get: function(name) { 23       return this.all()[name]; 24     }, 25     /* 26      *Set cookie 27      * 28      *@param  {string} cookieName  29      *@param  {string}  cookieValue 30      * or 31      *@param  {object}  cookieObject{key:value} 32      * 33      *@param  {object}  options{path:'/demo';domain:'/';expire:new Date();secure:0|1} 34     */ 35     set: function(name, value, options) { 36       var opt = options || {}; 37       if (!name) return; 38       if (type(name) === 'string' && value) { 39         this.write(name, value, opt); 40       } else if (type(name) === 'object') { 41         opt = value || {}; 42         for (var k in name) { 43           this.write(k, name[k], opt); 44         } 45       } 46       // if (type(name) === 'string' && value) { 47       //   str = encode(name) + '=' + encode(value) + '; '; 48       // } else if (type(name) === 'object') { 49       //   opt = value || {}; 50       //   for (var k in name) { 51       //     str += encode(k) + '=' + encode(name[k]) + '; '; 52       //   } 53       // } 54       // if (opt.path) str += 'path=' + opt.path; 55       // if (opt.domain) str += 'domain=' + opt.domain; 56       // if (opt.expires) str += 'expires=' + opt.expires.toUTCString(); 57       // if (opt.secure) str += 'secure'; 58       // document.cookie = str; 59     }, 60     all: function() { 61       return this.parse(this.cookies); 62     }, 63     delete: function(name) { 64       var expires = new Date(); 65       expires.setDate(expires.getDate() - 1); 66       document.cookie = name + "=" + this.get(name) + '; expires=' + expires.toUTCString(); 67     }, 68     write: function(name, value, opt) { 69       var str = encode(name) + '=' + encode(value); 70       if (opt.path) str += '; path=' + opt.path; 71       if (opt.domain) str += '; domain=' + opt.domain; 72       if (opt.expires) str += '; expires=' + opt.expires.toUTCString(); 73       if (opt.secure) str += '; secure'; 74       document.cookie = str; 75     }, 76     parse: function(cookieStr) { 77       var obj = {}; 78       var arrs = cookieStr.split(/ *; */); // Similar with the split(';') + trim() 79       var kv = []; 80       if (arrs[0] == '') { 81         return obj; 82       } 83       for (var i = 0; i < arrs.length; i++) { 84         kv = arrs[i].split('='); 85         obj[decode(kv[0])] = decode(kv[1]); 86       } 87       return obj; 88     } 89   } 90  91   function encode(str) { 92     return encodeURIComponent(str); 93   } 94  95   function decode(str) { 96     return decodeURIComponent(str); 97   } 98  99   function type(obj) {100     return obj == null ? String(obj) :101       class2type[toString.call(obj)] || "object"102   }103   window.qcookie = _qcookie;104 })(window)

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原标题：关于 cookie 使用中遇到的问题

关键词：ie