Here is some extended version of the code posted by @danottposted by danott:
It'll also implement a delete value from localstorage and shows how to adds a Getter and Setter layer so instead of,
localstorage.setItem(preview, true)
you can write
config.preview = true
Okay, here were go:
var PT=Storage.prototype
if (typeof PT._setItem >='u')
PT._setItem = PT.setItem;
PT.setItem = function(key, value)
{
if (typeof value >='u') //..undefined
this.removeItem(key)
else
this._setItem(key, JSON.stringify(value));
}
if (typeof PT._getItem >='u')
PT._getItem = PT.getItem;
PT.getItem = function(key)
{
var ItemData = this._getItem(key)
try
{
return JSON.parse(ItemData);
}
catch(e)
{
return ItemData;
}
}
// Aliases for localStorage.set/getItem
get = localStorage.getItem.bind(localStorage)
set = localStorage.setItem.bind(localStorage)
// Create ConfigWrapperObject
var config = {}
// Helper to create getter & setter
function configCreate(PropToAdd){
Object.defineProperty( config, PropToAdd, {
get: function () { return (get(PropToAdd) )},
set: function (val) { set(PropToAdd, val)}
})
}
//------------------------------
// Usage Part
// Create properties
configCreate('preview')
configCreate('notification')
//...
// Configuration Data transfer
// Set
config.preview = true
// Get
config.preview
// Delete
config.preview = undefined
Well, you may strip the aliases part with .bind(...). However, I just put it in since it's really good to know about this. I took me hours to find out why a simple get = localStorage.getItem; don't work.