<h3 dir="auto">Version</h3>
<p dir="auto">2.5.17</p>
<h3 dir="auto">Reproduction link</h3>
<p dir="auto"><a href="https://codepen.io/anon/pen/EOaXpd" rel="nofollow">https://codepen.io/anon/pen/EOaXpd</a></p>
<h3 dir="auto">Steps to reproduce</h3>
<ol dir="auto">
<li>打开chrome dev tool</li>
<li>点击页面的add按钮</li>
<li>控制台会打印三个updated</li>
</ol>
<h3 dir="auto">What is expected?</h3>
<p dir="auto">最终值没有改变的情况下组件不需要重新渲染</p>
<h3 dir="auto">What is actually happening?</h3>
<p dir="auto">最终值没有改变的情况下组件重新渲染了</p>
<hr>
<p dir="auto">2.5.17-beta已经没有这个问题了，什么时候会添加到正式版？</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/1060733/21605109/e54b2e3c-d1e1-11e6-8991-6cc7cca1a6bd.png"><img src="https://cloud.githubusercontent.com/assets/1060733/21605109/e54b2e3c-d1e1-11e6-8991-6cc7cca1a6bd.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto">as you can see,i repeatly defined the <code class="notranslate">methods</code> option twice<br>
so the last one will overwrite the first one<br>
but,there will be no warning for that<br>
i didn't know what is the matter when there was an error said that <code class="notranslate"> handleFoo</code> is not defined<br>
cause of actually i did have defined it</p>