title: Count the attr size = "small" using jquery
body: <p>I want length of the size attribute contains "small"</p>
  
  <pre><code>&lt;div class="handle" id="parentSmall-1" value="0" size="small"&gt;
      &lt;div class="csd a" id="child1"&gt;&lt;/div&gt;
      &lt;div class="csd a" id="child2"&gt;&lt;/div&gt;
  &lt;/div&gt;
  &lt;div class="handle" id="parentSmall-2" value="1" size="small"&gt;
      &lt;div class="csd b" id="child3"&gt;&lt;/div&gt;
      &lt;div class="csd b" id="child4"&gt;&lt;/div&gt;
  &lt;/div&gt;
  &lt;div class="handle" id="parentLarge-1" value="2" size="large"&gt;
      &lt;div class="csd c" id="child5"&gt;&lt;/div&gt;
      &lt;div class="csd c" id="child6"&gt;&lt;/div&gt;
  &lt;/div&gt;
  &lt;div class="handle" id="parentLarge-2" value="3" size="large"&gt;
      &lt;div class="csd d" id="child7"&gt;&lt;/div&gt;
      &lt;div class="csd d" id="child8"&gt;&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>