Vue watch handler

Vuejs set

Vue.set(vm.someObject, 'propertyName', value)
// Or using alias
this.$set(this.someObject, 'propertyName', value)
// For an array, simply repalce propertyName with the index
this.$set(this.someArray, indexOfItem, value)
// Or assign new props to an object
this.someObject = Object.assign({}, this.someObject, { a: 1, b: 2 })

Source: vuejs.org

Vue watch handler

data: function ()  {
    return {
       questions: []
    }
},
    
watch: {
   questions: {
       handler: function(val, oldVal) {
           this.foo(); // call it in the context of your component object
       },
       deep: true
    }
},      
    
methods: {
    foo() {
        console.log("foo called");
    }
}

Source: stackoverflow.com

Similar codes

0 vote139 views1 answer
Aos initial configuration vue
Javascript Vue
0 vote130 views1 answer
Vue router guard
Javascript Vue
0 vote130 views2 answers
Vuetify data table expanded icon example
Javascript Vue
0 vote163 views2 answers
Vuejs slots events
Javascript Vue
0 vote128 views1 answer
Vue electron name and icon
Javascript Vue
0 vote138 views1 answer
How to use the onload event n vue js
Javascript Vue
6 votes130 views3 answers
Vue watch object member
Javascript Vue
2 votes131 views2 answers
Vue directive
Javascript Vue
5 votes122 views6 answers
Vue v-for object
Javascript Vue
1 vote130 views1 answer
Vue npx
Javascript Vue