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localStorage polyfill with check first
(function(){
if(
!(function(t){
try {
window.localStorage.setItem(t,t);
window.localStorage.removeItem(t);
return true;
} catch(e) {
return false;
}
})('t')) {
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;
}
})();
(function(){try{window.localStorage.setItem("t","t");window.localStorage.removeItem("t");var b=!0}catch(a){b=!1}b||(window.localStorage={getItem:function(a){return a&&this.hasOwnProperty(a)?unescape(document.cookie.replace(new RegExp("(?:^|.*;\\s*)"+escape(a).replace(/[\-\.\+\*]/g,"\\$&")+"\\s*\\=\\s*((?:[^;](?!;))*[^;]?).*"),"$1")):null},key:function(a){return unescape(document.cookie.replace(/\s*=(?:.(?!;))*$/,"").split(/\s*=(?:[^;](?!;))*[^;]?;\s*/)[a])},setItem:function(a,b){a&&(document.cookie=
escape(a)+"="+escape(b)+"; expires=Tue, 19 Jan 2038 03:14:07 GMT; path=/",this.length=document.cookie.match(/=/g).length)},length:0,removeItem:function(a){a&&this.hasOwnProperty(a)&&(document.cookie=escape(a)+"=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/",this.length--)},hasOwnProperty:function(a){return(new RegExp("(?:^|;\\s*)"+escape(a).replace(/[\-\.\+\*]/g,"\\$&")+"\\s*\\=")).test(document.cookie)}},window.localStorage.length=(document.cookie.match(/=/g)||window.localStorage).length)})();
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