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August 4, 2017 01:31
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LocalStorage pollyfill , source: https://developer.mozilla.org/en-US/docs/Web/API/Storage/LocalStorage
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| if (!window.localStorage) { | |
| window.localStorage = { | |
| getItem: function (sKey) { | |
| if (!sKey || !this.hasOwnProperty(sKey)) { return null; } | |
| return unescape(document.cookie.replace(new RegExp("(?:^|.*;\\s*)" + escape(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*((?:[^;](?!;))*[^;]?).*"), "$1")); | |
| }, | |
| key: function (nKeyId) { | |
| return unescape(document.cookie.replace(/\s*\=(?:.(?!;))*$/, "").split(/\s*\=(?:[^;](?!;))*[^;]?;\s*/)[nKeyId]); | |
| }, | |
| setItem: function (sKey, sValue) { | |
| if(!sKey) { return; } | |
| document.cookie = escape(sKey) + "=" + escape(sValue) + "; expires=Tue, 19 Jan 2038 03:14:07 GMT; path=/"; | |
| this.length = document.cookie.match(/\=/g).length; | |
| }, | |
| length: 0, | |
| removeItem: function (sKey) { | |
| if (!sKey || !this.hasOwnProperty(sKey)) { return; } | |
| document.cookie = escape(sKey) + "=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/"; | |
| this.length--; | |
| }, | |
| hasOwnProperty: function (sKey) { | |
| return (new RegExp("(?:^|;\\s*)" + escape(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=")).test(document.cookie); | |
| } | |
| }; | |
| window.localStorage.length = (document.cookie.match(/\=/g) || window.localStorage).length; | |
| } |
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