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ims-react-directive

v1.1.0

Published

a online docs and npm package template

Downloads

29

Readme

在 react 中使用 v-if 和 v-show

node 版本 v18.13.0

Changelog · Report Bug · Request Feature

NPM version NPM downloads install size

Test CI status Deploy CI Coverage

contributors forks stargazers issues

 docs by dumi Build With father

简介

快速上手

安装

推荐使用 pnpm 安装

pnpm i ims-react-directive -S

ims-react-direcive

在 react 项目中使用 vue 指令,支持自定义指令。

安装依赖

npm i ims-react-direcive

使用说明

如果使用 typescript,修改 tsconfig.json 文件

{
  "compilerOptions": {
    "jsx": "react-jsx",
    "jsxImportSource": "ims-react-direcive",
  }
}

如果使用 webpack 打包,修改 babel.config.json 或修改.babelrc

// .babelrc / babel.config.json
{
  "presets": [
    [
      "@babel/preset-react",
      {
        "runtime": "automatic",
        "importSource": "ims-react-direcive"
      }
    ]
  ]
}

如果使用 vite

export default defineConfig({
  plugins: [
    react({
      jsxImportSource: 'ims-react-direcive',
    }),
  ],
});

如果使用 umi,先安装@babel/preset-react 依赖,然后修改.umirc 配置文件

import { defineConfig } from 'umi';

export default defineConfig({
  extraBabelPresets: [
    [
      '@babel/preset-react',
      {
        runtime: 'automatic',
        importSource: 'ims-react-direcive',
      },
    ],
  ],
});

如果使用 react-create-app,先安装@babel/preset-react,然后修改 package.json 文件,添加 babel 属性。

{
"babel": {
    "presets": [
      "react-app",
      [
        "@babel/preset-react",
        {
          "runtime": "automatic",
          "importSource": "ims-react-direcive"
        }
      ]
    ]
  },
}

然后就可以在项目中,使用框架内置的指令

function App() {
  const model = useModel({ name: 'jack' });

  return <div v-if={false} v-show={false}></div>;
}

v-if

和 vue 中的 v-if 一样,这个不仅可以对原生 dom 使用,还能对组件进行使用。

v-show

和 vue 中的 v-show 一样,这个只能对原生 dom 使用,因为会修改 dom 元素的 style 中 display 属性,如果组件支持 style.display 属性的话,也可以使用 v-show。

自定义指令

在项目入口,从ims-react-direcive/directive引入directive,然后就可以自定义指令了。语法如下:

import { directive } from 'ims-react-direcive/directive';

// name 指令名称
directive('name', {
  // 组件渲染之前,在createElement的时候,在这个生命周期可以处理组件props,然后组件渲染的时候,可以拿到处理后的props。注意这个方法只要组件一重新render,就会触发一次。如果返回false这个组件就不渲染了。
  // value:当前指令的值
  // props:当前组件的props
  create: (value, props) => {
    // example v-show的实现
    if (value === false) {
      if (props?.style) {
        props.style.display = 'none';
      } else {
        props.style = { display: 'none' };
      }
    }
  },
  // dom元素和组件渲染的时候触发,正常情况只会触发一次。如果组件多次销毁和渲染,每次渲染都会触发这个方法。
  // 这个方法里面不能处理props,但是可以拿到组件引用活dom元素引用,可以去调用组件或dom元素的方法
  // ref:如果是组件则是组件引用,如果是dom元素就是dom的引用。
  // value:当前指令的值
  // props:当前组件的props
  mounted: (ref, value, props) => {
    // example v-text的实现
    if (isDOM(ref)) {
      ref.innerText = value;
    }

    // example v-html的实现
    if (isDOM(ref)) {
      ref.innerHTML = value;
    }
  },
  // 这个方法是组件style.display由none转换为block时触发
  // 参数和mounted一样
  show: (ref, value, props) => {
    // example v-focus的实现
    ref?.focus?.();
  },
  // 和show相反
  hidden: (ref, value, props) => {
    // 暂无使用场景
  },
});

🤝 Contributing

📊 Total: 1

📝 License

Copyright © 2020 - present eternallycyf. This project is MIT licensed.