title: How can I reload a vue component?
body: <p>I know the solution is update the prop data like this :</p>
  
  <pre><code>this.selectedContinent = ""
  </code></pre>
  
  <p>But I want to use another solution</p>
  
  <p>After I read some reference, the solution is :</p>
  
  <pre><code>this.$forceUpdate()
  </code></pre>
  
  <p>I try it, but it does not work</p>
  
  <p>Demo and full code like this : </p>
  
  <p><a href="https://jsfiddle.net/Lgxrcc5p/13/" rel="noreferrer">https://jsfiddle.net/Lgxrcc5p/13/</a></p>
  
  <p>You can click button test to try it</p>
  
  <p>I need a solution other than update the property data</p>