SOURCE

var vm = new Vue({
  el: '#app',
  data: {
    age: 28,
    name: 'keepfool',
    sex: 'Male'
  }
})

<div id="app">
  <h1 v-if="age >= 25">
    Age: {{ age }}
  </h1>
  <h1 v-else>
    Name: {{ name }}
  </h1>
  <h1>
    ---------------------分割线---------------------
  </h1>
  <h1 v-show="name.indexOf('keep') >= 0">
    Name: {{ name }}
  </h1>
  <h1 v-else>
    Sex: {{ sex }}
  </h1>
</div>