vuejs -tree code example

Example 1: vuejs

var app = new Vue({
  el: '#app',
  data: {
    message: 'Hello Vue!'
  }
})

Example 2: vuejs

const CounterApp = {
  data() {
    return {
      counter: 0
    }
  },
  mounted() {
    setInterval(() => {
      this.counter++
    }, 1000)
  }
}