VueJS: watching two properties

Question

Suppose I have two data properties:

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

When a and b become true at the same time, I want to carry out a related task.

How can I use a watch method in Vue to achieve this?

user_11632064 · Answer

It's pretty much the same solution as @Bert suggested. But you can just do the following:

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

Then:

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