Implement storage.js, list example API usage, and list TODO items. This sheit still needs to get tested

Author: marcuswestin

README

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+store.js
+========
+
+store.js exposes a simple API for cross browser local store
+
+	// Store 'marcus' at 'username'
+	store.set('username', 'marcus')
+	
+	// Get 'username'
+	store.get('username')
+	
+	// Delete 'username'
+	store.delete('username')
+	
+	// Clear all keys
+	store.clear()
+	
+	// Use JSON to stash an object (see http://www.json.org/json2.js)
+	store.set('user', JSON.stringify({ name: 'marcus', likes: 'javascript' }))
+	
+	// Use JSON to retrieve an object (see http://www.json.org/json2.js)
+	var user = JSON.parse(store.get('user'))
+	alert(user.name + ' likes ' + user.likes)
+
+TODO
+----
+I wrote store.js in the past hour looking at https://developer.mozilla.org/en/dom/store and http://msdn.microsoft.com/en-us/library/ms531424.aspx. I haven't tested it yet though.
+
+ - I believe underlying APIs can throw under certain conditions. Where do we need try/catch?
+ - Write tests
+ - Test in IE6
+ - Test in IE7
+ - Test in IE8
+ - Test in Firefox 2.0
+ - Test in Firefox 3.0
+ - Test in Firefox 3.5
+ - Test in Firefox 3.6
+ - Test in Safari 2
+ - Test in Safari 3
+ - Test in Safari 4
+ - Test in Safari 5
+ - Test in Chrome 4
+ - Test in Chrome 5
+ - Test in Opera 9
+ - Test in Opera 10

store.js

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+var store = (function(){
+	var api = {},
+		win = window,
+		doc = win.document,
+		name = 'localStorage',
+		store
+	
+	api.set = function(key, value) {}
+	api.get = function(key) {}
+	api.delete = function(key) {}
+	api.clear = function() {}
+	
+	if (win.globalStorage) {
+		store = win.globalStorage[win.location.hostname]
+		api.set = function(key, val) { store[key] = val }
+		api.get = function(key) { return store[key].value }
+		api.delete = function(key) { delete store[key] }
+		api.clear = function() { for (var key in store ) { delete store[key] } }
+	} else if (win.localStorage) {
+		store = win.localStorage
+		api.set = function(key, val) { store[key] = val }
+		api.get = function(key) { return store[key] }
+		api.delete = function(key) { delete store[key] }
+		api.clear = function() { for (var key in store ) { delete store[key] } }
+	} else if (Element.prototype.addBehavior) {
+		store = doc.body.appendChild(doc.createElement('div'))
+		store.style.display = 'none'
+		// See http://msdn.microsoft.com/en-us/library/ms531081(v=VS.85).aspx
+		// and http://msdn.microsoft.com/en-us/library/ms531424(v=VS.85).aspx
+		store.addBehavior('#default#userData') 
+		store.load(name)
+		api.set = function(key, val) {
+			store.setAttribute(key, val)
+			store.save(name)
+		}
+		api.get = function(key) {
+			return store.getAttribute(key)
+		}
+		api.delete = function(key) {
+			store.removeAttribute(key)
+			store.save(name)
+		}
+		api.clear = function() {
+			var attributes = store.XMLDocument.documentElement.attributes;
+			for (var i=0, attr; attr = attributes[i]; i++) {
+				store.removeAttribute(attr.name)
+			}
+			store.save(name)
+		}
+	}
+	
+	return api
+})();