<blockquote>
I saw a code I don't know like "const { props } = this". What is "{}" mean?
</blockquote>
It is one of syntax in "destructuring assignment" in JavaScript ES6.
<h3 id="heading-for-example">For example</h3>
You can rewrite this.
<pre><code class="lang-javascript">const title = post.title
const date = post.date
const tags = post.tags
</code></pre>
As this.
<pre><code class="lang-javascript">const { title, date, tags } = post
</code></pre>

> I saw a code I don't know like "const { props } = this". What is "{}" mean?

It is one of syntax in "destructuring assignment" in JavaScript ES6.

### For example
You can rewrite this.
```javascript
const title = post.title
const date = post.date
const tags = post.tags
```
As this.
```javascript
const { title, date, tags } = post
```

Variable declaration with "{}" in JavaScript

For example