H5 Common storage Methods-localstorage

1. Storage type:key:value
2. Expiration policy:local has no expiration limit , unless manually deleted, session Browser closes or re-opens the page
3. Size: 5M per domain
4. Browser:ie8<=
5. Api
• GetItem
• SetItem
• RemoveItem
• Key stores the subscript of the data, starting from zero
• Clear

Code:

Features: Custom storge

1 functionSetstorage (Key, Val, exp) {//Save Storage min2 3  　　 varexpires = exp! = ' &&typeof(exp)! = ' undefined '? exp*60*1000 +NewDate (). GetTime (): 0;4 5  　　 Localstorage.setitem (Key, Json.stringify ({data:val, expires:expires}));6 7 }8 9 functionGetStorage (key) {Ten  One  　　 vardata =Localstorage.getitem (key); A  -  　　 varDataobj =json.parse (data); -  the  　　 if(NewDate (). GetTime () >=dataobj.expires) { -  -Console.log (' Expires '); -  +  　　 } -  +  　　 Else{ A  at returnDataobj.data; -  -  　　 } -  -}

　　

H5 Common storage Methods-localstorage