listen for on change vue code example

Example 1: how to watch for changes within a prop in vue

watch: {
    $props: {
      handler() {
        this.parseData();
      },
      deep: true,
      immediate: true,
    },

Example 2: v-on:change vue

// It is important that the watch function be named the same as the data/computed property.
new Vue({
  computed: {
    parsedInput () {
      return parse(this.userInput)
    }
  },
  methods: {
    process () {
      serverProcess(this.parsedInput);
  	},
  },
  watch: {
    parsedInput() {
      this.process()
    }
  }
})