watch objects inside array vue code example

Example 1: vue deep watch

watch: {
    colors: {
        handler(newValue){
            console.log('colors changed', newValue)
        }, deep: true
    }
}

Example 2: vue watch deep

export default {
  name: 'ColorChange',
  props: {
    colors: {
      type: Array,
      required: true,
    },
  },
  watch: {
    colors: {
      // This will let Vue know to look inside the array
      deep: true,

      // We have to move our method to a handler field
      handler(value) {
        console.log('The list of colors has changed!', value);
      }
    }
  }
}

Example 3: array object inside an arrar in vue

new Vue({
    el: '#app',
    data:{
        myArr : [
            {
                name: 'object-1',
                nestedArr: ['apple', 'banana']
            },
            {
                name: 'object-2',
                nestedArr: ['grapes', 'orange']
            }
        ]
    },
    methods:{
        changeArrayItem: function(){
            this.$set(this.myArr[1].nestedArr, 1, 'strawberry');
        }
    }
})