[VUE] watch

<template>
  <h1 @click="changeMessage">
    {{ msg }}
  </h1>
  <h1>{{ reversedMessage }}</h1>
</template>

<script>
export default {
  data() {
    return {
      msg: 'Hello?'
    }
  },
  computed: {
    reversedMessage() {
      return this.msg.split('').reverse().join('')
    }
  },
  watch: {
    msg(value) {
      console.log('msg:', value)
    },
    reversedMessage() {
      console.log('reversedMessage:', this.reversedMessage)
    }
  },
  methods: {
    changeMessage() {
      this.msg = 'Good!'
    }
  }
}
</script>