this 24set

1this.$set(this.someObject, 'property', 'value')

1Vue.set(vm.someObject, 'propertyName', value)
2// Or using alias
3this.$set(this.someObject, 'propertyName', value)
4// For an array, simply repalce propertyName with the index
5this.$set(this.someArray, indexOfItem, value)
6// Or assign new props to an object
7this.someObject = Object.assign({}, this.someObject, { a: 1, b: 2 })