web前端|js教程
React,代码,搭建
web前端-js教程环境搭建
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1.从零开始搭建webpack+react开发环境
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2.引入Typescript
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安装依赖
npm i -S @types/react @types/react-domnpm i -D typescript awesome-typescript-loader source-map-loader
新建tsconfig.json
{ "compilerOptions": { "outDir": "./dist/", "sourceMap": true, "noImplicitAny": true, "module": "commonjs", "target": "es5", "jsx": "react" }, "include": [ "./src/**/*" ]}
修改webpack.config.js
// webpack.config.jsconst path = require(path);const HtmlWebpackPlugin = require(html-webpack-plugin);const webpack = require(webpack);module.exports = { entry: { index:./src/index.js, }, output: { filename: undle.js, path: path.resolve(dirname, dist) }, devtool: "source-map", // Add .ts and .tsx as resolvable extensions. resolve: { extensions: [.ts, .tsx, .js, .jsx] }, module: { rules: [{ test: /\.css$/, use: [style-loader, css-loader]},{ test: /\.(png|svg|jpg|gif)$/, use: [url-loader]},{ test: /\.(woff|woff2|eot|ttf|otf)$/, use: [url-loader]},{ test: /\.(js|jsx)$/, exclude: /node_modules/, use: {loader: abel-loader }},// All files with a .ts or .tsx extension will be handled by awesome-typescript-loader.{ test: /\.tsx?$/, loader: "awesome-typescript-loader"}, ] }, plugins: [ new HtmlWebpackPlugin({title: production,template: ./index.html }), new webpack.NamedModulesPlugin(), new webpack.HotModuleReplacementPlugin() ], devServer: { contentBase: ./dist, hot: true },};
3.引入less并支持import less modules
安装依赖
npm i -D less less-loadernpm i -D typings-for-css-modules-loader
tips:typings-for-css-modules-loader
打包时将样式模块化，我们可以通过import或require引入样式，并且相互不冲突。
//demo.less -> demo.less.d.ts//.demo{color:red;} -> export const demo: string;import * as styles from demo.less
修改webpack.config.js
// webpack.config.jsconst path = require(path);const HtmlWebpackPlugin = require(html-webpack-plugin);const webpack = require(webpack);module.exports = { entry: { index:./src/index.js, }, output: { filename: undle.js, path: path.resolve(dirname, dist) }, devtool: "source-map", //add .less resolve: { extensions: [.ts, .tsx, .js, .jsx, .less, .css] }, module: { rules: [{ test: /\.css$/, use: [style-loader, css-loader]},//import less modules，name：demodemo_hash{ test: /\.less/, use: [style-loader, ypings-for-css-modules-loader?modules&importLoaders=1&localIdentName=[name][local]_[hash:base64:5]&namedExport&camelCase&less!less-loader ]},{ test: /\.(png|svg|jpg|gif)$/, use: [url-loader]},{ test: /\.(woff|woff2|eot|ttf|otf)$/, use: [url-loader]},{ test: /\.(js|jsx)$/, exclude: /node_modules/, use: {loader: abel-loader }},{ test: /\.tsx?$/, loader: "awesome-typescript-loader"}, ] }, plugins: [ new HtmlWebpackPlugin({title: production,template: ./index.html }), new webpack.NamedModulesPlugin(), new webpack.HotModuleReplacementPlugin() ], devServer: { contentBase: ./dist, hot: true },};
4.引入react-routerv4
npm i -S react-router-dom
创建history
import { createHashHistory } from history;export default createHashHistory();
使用
import React from eact;import ReactDom from eact-dom;import * as styles from "./index.less";import history from ./helpers/history;import {Router, Route, Switch, Redirect, Link} from eact-router-dom;import Hello from "./router/Hello";import TodoList from "./router/TodoList";const PrivateRoute = ({ component: Component , ...rest}) => { return (()}/> );}ReactDom.render(
Homes TodoList {/**/}, document.getElementById( oot));
…ES7语法报错
npm i -S babel-preset-stage-2
修改.babelrc
{ "presets": ["es", "react", "stage-2"],}
5.引入mobx状态管理
npm i -S mobx mobx-react
使用装饰器语法
修改tsconfig.json
"compilerOptions": { "target":"es", //fix mobx.d.ts error "experimentalDecorators": true, "allowJs": true}
npm i -D babel-plugin-transform-decorators-legacy
修改.babelrc
{ "presets": ["es", "react", "stage-2"], "plugins": ["transform-decorators-legacy"]}
