vue methods v-on =!

JavaScript
<div id="example-2">
  <!-- `greet` is the name of a method defined below -->
  <button v-on:click="greet">Greet</button>
</div><div class="nav-right-items menuBtn" @click="test">
methods: {
  test: function() {
    this.mobileClick = !this.mobileClick
  }
},
Source

Also in JavaScript: