Vue：观察者可以用来观察计算属性吗？

Question

我正在尝试查看是否可以使用观察者方法来查找计算属性中的更改，而不是在此处查看各个商店属性。这会起作用还是只能用于数据属性和道具？

computed: {
      optionsTrue() {
            return this.$store.getters.getOption1IsTrue && this.$store.getters.getOption2IsTrue
      } 
},
watch: {
     optionsTrue(newVal) {
         // would this work to check when the value of the computed property has changed or can watcher only watch data properties?
     }

}

Answer 1

工作代码

computed: {
  completed: function () {
     return this.required && this.textAnswer !== '';
  },
},
watch: {
  completed: function(val) {
    console.log(val)
  }
}