如何在vue中使用ts开发_javascript_weixin

用了这么久的vue，终于踏出第一步使用ts去开发，发现真的是一时用ts一时爽，一直用ts一直爽。所以今天大概说一下怎么用ts简单开发。

1.首先，更改一下webpack配置

修改入口文件 [因为使用ts开发，所以文件都是ts]
```
entry: {
    app: '.src/main.js'
}复制代码
```

根路径下添加 tsconfiog.js配置文件，下面的是自己的一份简单的配置可参考

{
  // 编译选项    "compilerOptions": {        "module": "esnext",        "strict": true,        "jsx": "preserve",        "typeRoots" : ["./typings"],        "importHelpers": true,        "moduleResolution": "node",        "experimentalDecorators": true,        "esModuleInterop": true,        "allowSyntheticDefaultImports": true,        "sourceMap": true,        "baseUrl": ".",        "skipLibCheck": true,        "skipDefaultLibCheck": true,        "strictNullChecks": true,        "downlevelIteration": true,        "target": "es5",        "noImplicitAny": false,        "allowJs": true,        "outDir": "./dist/",   // 输出目录        "noImplicitThis": false,        "removeComments": false,        "types": [            "webpack-env"        ],        "paths": {   // @代表src模块的路径            "@/*": [                "src/*"            ]        },        "lib": [   // 编译过程中需要引入的文件            "esnext",            "dom",            "dom.iterable",            "scripthost",            "es5",            "es2015",            "es2016",            "es2017",            "es2015.promise",            "es2015.collection",            "es2015.iterable",            "es2015.core",            "dom"        ]    },    "awesomeTypescriptLoaderOptions": {},    "declaration": true,    "include": [        "src/**/*.ts",        "src/**/*.tsx",        "src/**/*.vue",    ],    "exclude": [        "node_modules",        "src/main.ts"    ]}复制代码

根目录下添加 tslint.json文件，[规范一下书写ts]，下面的也是一些简单配置

{    "extends": [        "tslint:recommended"    ],    "lib": [        "ES2015",        "ES2016",        "ES2017"    ],    "linterOptions": {        "exclude": [            "node_modules",            "dist",            "config",            "build",            "./**/*.js",            "src/api/**",            "src/components/common/**",            "src/components/page/**",            "src/components/public/**",            "static/**"        ]    },    "rules": {        "member-access": [            true,            "no-public"        ],        "interface-name": [            true,            "always-prefix"        ],        "align": [            true,            "parameters",            "statements"        ],        "class-name": true,        "comment-format": [            true,            "check-space"        ],        "curly": true,        "eofline": true,        "forin": false,        "indent": [            true,            "spaces"        ],        "noImplicitThis": false,        "jsdoc-format": false,        "label-position": true,        "max-line-length": [            true,            200        ],        "no-any": false,        "no-arg": true,        "no-bitwise": false,        "no-conditional-assignment": true,        "no-consecutive-blank-lines": true,        "no-console": [            false,            "debug",            "info",            "log",            "time",            "timeEnd",            "warn",            "trace"        ],        "no-construct": true,        "no-constructor-vars": false,        "no-debugger": false,        "no-duplicate-variable": true,        "no-empty": false,        "no-eval": true,        "no-internal-module": true,        "no-namespace": true,        "no-reference": true,        "no-shadowed-variable": false,        "no-string-literal": true,        "no-switch-case-fall-through": false,        "no-trailing-whitespace": true,        "no-unused-expression": [            true,            "allow-fast-null-checks"        ],        "no-use-before-declare": false,        "no-var-keyword": true,        "no-var-requires": false,        "object-literal-sort-keys": false,        "one-variable-per-declaration": [            true,            "ignore-for-loop"        ],        "quotemark": [            true,            "single",            "jsx-double"        ],        }复制代码

要让ts认识vue文件，[在src路径下面添加vue-shim-d.ts]

import router from '@/config/router';
import { Comfirm, MessageBox } from 'element-ui';
import Vue from 'vue';import VueRouter from 'vue-router';
import { Route } from 'vue-router';import Tools from '@/utils/tools';
import Api from '@/config/api';
// 扩充
declare module 'vue/types/vue' {
  // 这些是全局属性，可以直接this.$api这样类似使用  
  interface Vue {    
    $router: VueRouter;        
    $route: Route;          
    $message: MessageBox;        
    $conform: Comfirm;        
    $tools: Tools;        
    $api: Api;     
}}复制代码

需要注意一点的是在导入vue文件的时候，要写上.vue后缀，因为TypeScript默认识别ts文件。

2. 改造一下vue文件

在这之前我们需要安装一个插件 vue-property-decorator，是在 vue-class-component 上增强了更多的结合 Vue 特性的装饰器，新增了一些装饰器。

src/app.vue

[lang="ts"，让webpack把这段代码识别为ts，除了需要改造一下script标签内的内容，其他地方都无需修改]

<template>  
    <div id="app">    
        <router-view></router-view>  
    </div>
</template>

<script lang="ts">
    import { Component, Vue } from 'vue-property-decorator';
    @Componentexport 
    default class App extends Vue {  
        private created() {    
            // 不需要保持当前路由，则前往首页    
            if (!location.hash.includes('keepRoute=true')) {      
                this.$router.push({ path: '/' });    
            }  
         }}
</script>

<style>
@import "./assets/css/main.css";
@import "./assets/css/color-dark.css"; /*深色主题*/
</style>复制代码

下面举例一下常用的装饰器使用

<script lang="ts">
import Test from './test.vue';
import { Component, Prop, Provide, Vue, Watch  } from 'vue-property-decorator';
// 引入组件 即使没有使用组件也得书写 @Component，里面为空即可。
@Component({    
    components: {      
        Test    
    },  
})

 export default class Home extends Vue {
  // Prop  
    @Prop({}) private config: object = {};

  // data   
    private side: boolean = false;
    private list: object = {};
  
 //  Watch
    @Watch('config')  
    onConfigChanged(val: any, oldVal: any) {    
        this.init();  
    }}

  // 生命周期
    private created(){
        this.init();
    }

  // 方法
    private init(){
        console.log('halo');
    }
</script>复制代码