import{ toRef, reactive, toRefs }from"vue";constform =reactive({name:"妞妞",age:2});constforms =toRefs(form);const{ name, age } = forms; toRef解构出的数值是Proxy一个响应式的数值。如果不用toRef,对解构出来的数值进行改动,数值会更改,但是视图不会更新。 let{ name, age } = form;// 视...
我在做SAP Cloud Application Programming 练习时,执行下列两条命令后: cds init bookshop cds watch bookshop 遇到这一条错误消息: cannot find package module @sap/cds/common npm install之后,问题解决,现在错误消失了: @sap/cds/common 位于node_module... ...
constructor (firstName: string, lastName: string) {this.firstName =firstNamethis.lastName =lastNamethis.fullName = firstName + ' ' +lastName } } interface Person { firstName: string lastName: string }functiongreeter (person: Person) {return'Hello, ' + person.firstName + ' ' +person.l...
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添加watch, src/main.ts 代码语言:javascript 复制 import'./assets/main.css'-import{createApp}from'vue'+import{createApp,watch}from'vue'import{createPinia}from'pinia'importAppfrom'./App.vue'importrouterfrom'./router'constapp=createApp(App)+constpinia=createPinia()-app.use(createPinia())+// ...
Error: Cannot find module ‘worker_threads’ 原因是: Vite 需要 Node.js 版本 >= 12.0.0。 切换Node版本 查看我自己的Node版本 代码语言:javascript 代码运行次数:0 运行 AI代码解释 node-v 所以升级Node版本即可,这里使用nvm管理Node版本 nvm可以通过下面的连接下载安装即可。
Type Support For.vueImports in TS TypeScript cannot handle type information for.vueimports by default, so we replace thetscCLI withvue-tscfor type checking. In editors, we needTypeScript Vue Plugin (Volar)to make the TypeScript language service aware of.vuetypes. ...
log(name); // new name value console.log(oldAge); // old age value console.log(oldName); // new name value }, // options { lazy: true, //default. The code in the callback function is executed when the watch is created. If lazy is true, how can it not be executed when it...
import Component from "vue-class-component";import { Prop, Vue, Watch } from "vue-property-decorator"; 1. 后来排查问题,发现是因为我使用了两个装饰器的“合并写法”(即错误写法) 正确的写法: 3. prop的默认值是空对象为什么始终不起效? 大括号在js中是块作用域,因此会产生歧义,是块作用域呢还是返回...
0,Fr(e.update);});},$watch:function $watch(e){return ys.bind(e);}}),Us=function Us(e){return"_"===e||"$"===e;},Zs=function Zs(e,t){return e!==u&&!e.__isScriptSetup&&T(e,t);},Ys={get:function get(_ref26,t){var e=_ref...