watch vue track set data code example

Example 1: vue watch child property

...
watch:{
    'item.someOtherProp'(newVal){
        //to work with changes in "myArray"
    },
    'item.prop'(newVal){
        //to work with changes in prop
    }
}

Example 2: using the watch method to monitor route updates in vue

watch: {
  // Whenever the movie prop changes, fetch new data
  movie: {
    // Will fire as soon as the component is created
    immediate: true,
    handler(movie) {
      // Fetch data about the movie
      fetch(`/${movie}`).then((data) => {
        this.movieData = data;
      });
    }
  }
}