3.select(<span class="hljs-built_in">this</span>).transition(<span class="hljs-string">&#x27;grow&#x27;</span>).attr(<span class="hljs-string">&#x27;transform&#x27;</span>, <span class="hljs-string">&#x27;scale(1.2)&#x27;</span>);
                    },
                    <span class="hljs-string">&#x27;mouseleave&#x27;</span>: <span class="hljs-function"><span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) </span>{
                        d3.select(<span class="hljs-built_in">thi