title: How to get value from emit event without v-on directive?
body: <p>I have two components: Parent and Child. </p>
  
  <p>In Child component, I create user event:</p>
  
  <pre><code>someMethod() {
      this.$emit('init-event', 100)
  }
  </code></pre>
  
  <p>Parent component:</p>
  
  <pre><code>getChildEventValue() {
      // how now get value from event 'init-event' without v-on directive in template?
  }
  </code></pre>