read13.md

Local Storage

local storage is used to store the client data local browser. Unlike cookies, the stored data is never transmitted to a remote web server. The storage is a pair values base. The data is stored by a name-key which is a string and the data value which can be any type of JavaScript supported data types. However, the data is actually stored as a string so to restore the value data type then methods as parseInt() and parseFloat() are used.

1. To store an item then localStorage.setItem("nameKey", value); or localStorage["nameKey"] = value;
2. To restore the item value then localStorage.getItem("nameKey"); or localStorage["nameKey"];.
3. To remove an item then removeItem("nameKey").
4. To clear the storage then clear();
5. To iterate through all of the name-keys stored by an index then key(index);.

The storage event is triggered on the window object when adding setItem (); , removing removeItem(); or clearing clear(); and actual changes are happened. The storage object is:

Local storage is based in pair values only, so to store an item with more than one value then the web SQL database is use as in: