普通的watch是这个样子的:data() {return {frontPoints: 0}},watch: {frontPoints(newValue, oldValue) {console.log(newValue)}}数组的watch是这个样的:data() {return {...

vue 中 Type of the default value for ‘data’ prop must be a function的解决方案vue官方文档搭配es6语法简单粗暴解决props: {dataList: {type: Object,default: () => ({a:1,b:2})}}