Add a module to wrap around localStorage and make it handy

www/save.js

@@ -0,0 +1,48 @@
+function Save(modules) {
+  var save = JSON.parse(localStorage.getItem('save')) || {};
+
+  return {
+    get: get,
+    set: set
+  };
+
+  function move(coordinates) {
+    if(coordinates.path.length == 1) {
+      return coordinates;
+    } else {
+      var newFocus = coordinates.focus[coordinates.path[0]];
+      if (newFocus != undefined) {
+        var newCoordinates = {path: coordinates.path.slice(1), focus: newFocus};
+        return move(newCoordinates);
+      } else {
+        return coordinates;
+      }
+    }
+  }
+
+  function get(key) {
+    if(key != undefined) {
+      var outputCoordinates = move({path: key.split('.'), focus: save});
+      if(outputCoordinates.focus != undefined && outputCoordinates.path.length == 1) {
+        return outputCoordinates.focus[outputCoordinates.path[0]]
+      } else {
+        return null;
+      }
+    }
+  }
+
+  function set(key, value) {
+    if(key != undefined) {
+      var outputCoordinates = move({path: key.split('.'), focus: save});
+      while(outputCoordinates.path.length > 1) {
+        outputCoordinates.focus[outputCoordinates.path[0]] = {};
+        outputCoordinates.focus = outputCoordinates.focus[outputCoordinates.path[0]];
+        outputCoordinates.path = outputCoordinates.path.slice(1);
+      }
+      outputCoordinates.focus[outputCoordinates.path[0]] = value;
+    } else {
+      save = value;
+    }
+    localStorage.setItem('save', JSON.stringify(save));
+  }
+}