$.indexedDB("ix").objectStore(storename).get(keyname).done(function(result, event){
if(!result) {
console.log('db empty');
getData(function(d){
$.indexedDB("ix").objectStore(storename).put(d.resource);
});
} else {
var lastVersion = result.version;
if(keyversion === lastVersion){
console.log('same version and result:');
$.indexedDB("ix").objectStore(storename).each(function(item){
upUI(item.value);
return item.value;
})
// TODO 版本相同，直接渲染数据
} else {
console.log('different version');
// 版本不同，api获取新版本，然后渲染模版，写入缓存
getData(function(d){
// upUI(item.value);
upUI(d.resource);
$.indexedDB("ix").objectStore(storename).put(d.resource);
});
}
}
});
this.loadFromCache = function(keyname, keyversion, data, fn){
// open data
var dbOpen = $.indexedDB("ix", {
"version": 1,
"schema": {
1: function(trans){
var objectStore = trans.createObjectStore(storename, {
"keyPath": storename
});
// objectStore.createIndex(storename);
}
}
}).done(function(db, event){
// get version
$.indexedDB("ix").objectStore(storename).get(keyname).done(function(result, event){
if(!result) {
console.log('db empty');
getData(function(d){
$.indexedDB("ix").objectStore(storename).put(d.resource);
});
} else {
var lastVersion = result.version;
if(keyversion === lastVersion){
console.log('same version and result:');
$.indexedDB("ix").objectStore(storename).each(function(item){
upUI(item.value);
return item.value;
})
// TODO 版本相同，直接渲染数据
} else {
console.log('different version');
// 版本不同，api获取新版本，然后渲染模版，写入缓存
getData(function(d){
// upUI(item.value);
upUI(d.resource);
$.indexedDB("ix").objectStore(storename).put(d.resource);
});
}
}
});
});
};
this.deleteFromCache = function(){
var deletePromise = $.indexedDB("ix").deleteDatabase();
};
getData(function(d){
// upUI(item.value);
upUI(d.resource);
$.indexedDB("ix").objectStore(storename).put(d.resource);
});
getData(function(d){
$.indexedDB("ix").objectStore(storename).put(d.resource);
});