title: How do these 2 notations differ in meaning in React.js?
body: <p>Came across these 2 notations recently. While both appear to be doing similar things, one of them uses an assignment operator while another one appears to be an object. Are they doing anything different?</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
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  <pre class="snippet-code-js lang-js prettyprint-override"><code>const { value = "" } = this.props;</code></pre>
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  <p>and </p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>let { value: newValue } = newProps;</code></pre>
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