监听整个对象,使用watch就行
export default {data() {return {a: {b: 1,c: 2}}},watch() {a: {handler(newVal, oldVal) {console.log('监听a整个对象的变化');},deep: true}}
}
监听对象中具体属性的变化,需要使用watch配合computed
export default {data() {return {a: {b: 1,c: 2}}},watch() {bChange() {console.log('监听a对象中b属性的变化');}},computed: {bChange() {return this.a.b;}}
}