1.开发环境 vue3.0
2.电脑系统 windows10专业版
3.在应用vue开发的过程中,咱们会有一些专用的属性和办法,咱们个别为了方便使用会这个属性和办法挂载到全局,上面我来分享一下
4.vue2挂载办法
Vue.prototype.$http = http
//在对应的组件中应用this.$http
//这种写法置信小火们很相熟了,那么在vue3中怎么写呢?
4-1.vue3挂载并应用
// 全局挂载const app = createApp(App)app.config.globalProperties.$Methods = Methods;
//在对应的组件中应用import { defineComponent, ref, getCurrentInstance, onMounted, reactive,} from "vue";//因为vue3是组合API,所以要引入对应的(getCurrentInstance)
// setup//一个json数组去重const { proxy }: any = getCurrentInstance();//要害代码 const $Methods = proxy.$Methods;//要害代码 const jsonarrreduce = reactive([ { id: "1", name: "李白" }, { id: "2", name: "杜甫" }, { id: "3", name: "白居易" }, { id: "4", name: "项羽" }, { id: "5", name: "小米" }, { id: "1", name: "红米" }, { id: "1", name: "诺基亚" }, { id: "2", name: "真我" }, ]); onMounted(() => { console.log($Methods.JsonArrReduce(jsonarrreduce, "id")); });
5.本期的分享到了这里就完结啦,心愿对你有所帮忙,让咱们一起致力走向巅峰。