Adds titlecase filter.

Author: addyosmani

demo.html

@@ -27,6 +27,9 @@ <h3>replace('World','Peeps')</h3>
     <h3>truncate(8, true)</h3>
     {{'Lorem Catsum Itsum' | truncate(8, true) }}
 
+    <h3>titlecase</h3>
+    {{'this is a sentence that was not using title case.' | titlecase}}
+
     <h3>startsWith(T)</h3>
     <template repeat="{{friend in friends | startsWith('T')}}">
         {{ friend.name }}

filter-titlecase.js

@@ -0,0 +1,13 @@
+/**
+ * Return a title-cased version of the input
+ * @param  {string} input 
+ * @return {string}
+ */
+PolymerExpressions.prototype.titlecase = function (input) {
+    var words = input.split(' ');
+    for (var i = 0; i < words.length; i++) {
+        var ret = words[i].toLowerCase();
+        words[i] = ret.charAt(0).toUpperCase() + ret.slice(1);
+    }
+    return words.join(' ');
+}

polymer-filters.html

@@ -12,6 +12,7 @@
 <script src="filter-random.js"></script>
 <script src="filter-round.js"></script>
 <script src="filter-truncate.js"></script>
+<script src="filter-titlecase.js"></script>
 <script src="filter-trim.js"></script>
 
 <!--
@@ -69,6 +70,12 @@
 
 > 2010-10-29 04:40:23 Z
 
+####Title case
+
+    {{'this is a sentence that was not using title case.' | titlecase}}
+
+> This Is A Sentence That Was Not Using Title Case.
+
 ####Order an array by the expression predicate
 
     <template repeat="{{friends | orderBy('age')}}">