Introducing vant components on demand

Vant 2 - Mobile UI Components built on Vue

Installing a plug-in 、 Add the configuration

babel-plugin-import  Is a babel plug-in unit , It will... During compilation import The way of writing is automatically converted to the way of introducing on demand .

#  Installing a plug-in 
npm i babel-plugin-import -D

//  stay .babelrc  Add configuration in 
//  Be careful ：webpack 1  No need to set  libraryDirectory
{
  "plugins": [
    ["import", {
      "libraryName": "vant",
      "libraryDirectory": "es",
      "style": true
    }]
  ]
}

//  For the use of  babel7  Users of , Can be in  babel.config.js  Middle configuration 
module.exports = {
  plugins: [
    ['import', {
      libraryName: 'vant',
      libraryDirectory: 'es',
      style: true
    }, 'vant']
  ]
};

  Define a js file

// Introduce on demand vant-ui Components 
import {Button,List} from 'vant'; 
const compontent = [Button,List]

export default function install(Vue) {
    if (install.installed) return
    compontent.forEach(i => Vue.component(i.name, i))
}

stay main.js Register in

import vant from "./components/vantComponents";
Vue.use(vant);

Be careful ： There may be Toast Useless after introduction , It can be found on the page Reintroduce .