优雅地使用loading

<div class="container">
  <div class="loading"></div>
</div>
.container {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.loading {
  width: 100px;
  height: 100px;
  border-radius: 100%;
  border: 5px #ffffff solid;
  border-right-color: #87CEEB;
  animation: loading 1s linear infinite;
}

@keyframes loading {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

<script>
  export default {
    name: "loading",
    data() {
      return {
        show: false
      }
    }
  }
</script>

//先引入loading组件
import LoadingComponent from './loading'
const Loading = {}
Loading.install = function (Vue) {
// 生成一个Vue的子类 同时这个子类也就是组件
const LoadingConstructor = Vue.extend(LoadingComponent)
// 生成一个该子类的实例
const instance = new LoadingConstructor()
// 将这个实例挂载在我创建的div上
// 并将此div加入全局挂载点内部
instance.$mount(document.createElement('div'))
document.body.appendChild(instance.$el)
//注入vue的原型链
Vue.prototype.$loading = {
    show() {
        instance.show = true
    },
    close(){  
        instance.show = false
        }
    }
}
export default Loading

<script>
  export default {
    name: 'HelloWorld',
    data() {
      return {
        msg: ''
      }
    },
    mounted() {
      this.$loading.show()
      setTimeout(()=>{
        this.$loading.close()
        this.msg = '加载完辽！'
      },3000)
    }
  }
</script>

import React from 'react';
import './index.css'

function hoc(ComponentClass) {
    return class HOC extends ComponentClass {
        render() {
            if (!this.state.loading) {
                console.log(this.state.loading)
                return super.render()
            }
            else {
                return (<div>
                    <div className="container">
                        <div className="loading"></div>
                    </div>
                </div>)
            }
        }
    }
}

export default hoc

import hoc from '../hoc/loading/index'

class Home extends Component {
    constructor(props) {
        super(props)
        this.state = {
            msg: '还没加载好',
            loading: true
        }
    }

    render() {
        return (
            <div>
                {this.state.msg}
            </div>
        );
    }

    componentDidMount() {
        let loading = this.state.loading
        setTimeout(() => {
            this.setState({
                loading: !loading,
                msg: '加载完辽!'
            })
        }, 3000)
    }
}

export default hoc(Home)