Exploring VueJS's capability to monitor the changes of two different

If I have two data properties:

data() {
  return {
    a: false, 
    b: false, 
  }
}

Is there a way to trigger a specific task when both a and b are set to true simultaneously using Vue's watch method?

Answer №1

Monitor a computed value.

computed:{
    combined(){
        return this.a && this.b
    }
}
watch:{
    combined(value){
        if (value)
            //perform an action
    }
}

There is a more concise way to achieve the same using $watch.

vm.$watch(
  function () {
    return this.a + this.b
  },
  function (newVal, oldVal) {
    // perform an action
  }
)

Answer №2

Essentially, the solution is similar to what @Bert recommended. However, you can achieve the same result by following these steps:

data() {
  return {
      combined: {
          a: false, 
          b: false, 
      }
  }
},

Then:

watch: {
    combined:{
        deep:true,
        handler
    }
}

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