ce/Functions/Arrow_functions">new ES2015 syntax for callback functions</a>
that provides a lexical <code>this</code>.
If this syntax is new,
think of it as a function that has the same <code>this</code> as the context it is defined in.</p>
<pre class="language-javascript line-numbers"><code class="javascript language-javascript"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">'a'</span><span class="token punctuation">)</span><span class="token punctuat