In the below:

  props: {
    id: {
      type: String,
      default() {
        return this.$route.params.id;
      },
    },
  },

then, supposing the parent component does not provide a value, I would expect the value of the id prop to change whenever the route changes to a new id. However this does not seem to be the case. Is my understanding correct? And is there a way to achieve reactivity here? Otherwise I'm thinking of setting required: false on it and then I'll have to have some computedId computed field, but I'd rather do it straight in the props section

CodePudding user response：

Wouldn't it be better to just use computed? Or use watch to listen to the id and perform the force refresh function, but I don't really know how to set the action directly in the props

CodePudding user response：

It's not a good idea to provide a default value base on a variable directly in props, the default in props is considered to provide a static value instead of a reactive value

use a computed value instead of props in your template may be a better practice

<div>{{ computedId }}</div>


  props: {
    id: {
      type: String,
    },
  },
  computed: {
     computedId() {
        return this.value || this.$route.params.id
     }
  }