lighting</p>
<pre class="language-js"><code><span class="token keyword">var</span> <span class="token function-variable function">foo</span> <span class="token operator">=</span> <span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token parameter">bar</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">return</span> bar<span class="token operator">++</span><span class="token punctuation">;</span>
<