定义pinia存储容器/stores/piniause-demo.js/***定义并导出容器*参数1：容器ID，必须唯一*参数2：配置对象*/exportconstuseDemoStore=defineStore('demo',{//state：类似组件data，用于存储数据供全局调用state:()=>({count:100,name:'Job',l