dom.js

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dom.js
¶

DOM module
¶
¶

Register dom namespace on scandiojs object
```
Scandio.dom = {};
```
¶

Closes and secures a cache module with within its own scope Note: This function being an IIFE leaves of parameters on outer function
```
Scandio.dom.cache = (function($, Scandio){
```
¶

Sets up local cache store
```
   var
      cache = {},
```

Handler of DOMNodeRemoved handling external node removals Sorry, I didn’t hack this

      nodeRemoved = function(event) {
         var label, coll, l, t = event.target;
         for (label in cache) {
            l = (coll = cache[label]).length;
            while (l--) {
               if (coll[l] === t || $.contains(t,coll[l])) {
                  delete coll[l]; --coll.length;
               }
            }
         }
      },

¶

Updates complete cache or scoped to a label
```
      update = function(label) {
```
¶

Passed in label is string, scoping to that label
```
         if (Scandio.isString(label)) {
```

Reset cache value at label

            if(cache[label] !== undefined) {
               cache[label] = $(cache[label].selector || '');
            }
         } else {

For each value in cache refresh it

            Scandio.util.each(cache, function($cached, label) {
               cache[label] = $($cached.selector);
            });
         }
      },

¶

Gets a value from cache or loads it from DOM
```
      get = function(label, selector) {
```

Both label and selector passed, cache/dom reading…

         if (Scandio.isString(selector) && Scandio.isString(label)) {

…either from cache or DOM

            cache[label] = cache[label] || $(selector);
         }

¶

What the callee gets: a jQuery object
```
         return cache[label];
      };
```

Bind to node removal in DOM

   $(document).on('DOMNodeRemoved', nodeRemoved);

Return public functions in object literal

   return {
      get: get,
      update: update
   };
}($, Scandio));

dom.js

DOM module