工厂模式```工厂模式 ``` ```js ;(function(){ const oBtn = document.qu

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .model-container {
            position: fixed;
            top: 50px;
            left: 20%;
            right: 20%;
            border: 1px solid #ccc;
            margin: 10px 0;
            height: 300px;
            border-radius: 5px;
            overflow: hidden;
            box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
        }
        .model-container .header{
            height: 50px;
            line-height: 50px;
            background-color: rgb(63, 58, 58);
            padding-left: 20px;
            color: #fff;
        }
        .success .header{
            background-color: green;
         }
        .warning .header{
            background-color: orange;
         }
        .error .header{
            background-color: red;
         }
         .btn-box{
            color: #fff;
            margin-bottom: 50px;
            padding: 10px;
         }
        .btn-box .on{
            background-color: green;
         }
         .btn-box .off {
             background-color: red;
          }
          .btn-box .warning {
             background-color: orange;
          }
    </style>
</head>
<body>
    <div class="btn-box">
        <div id="btn-t" class="btn-row off">测试</div>
    </div>
    <div class="model-container" id="app">
        <div class="header ">dfdsf</div>
    </div>
    <div class="button-box">
        <button data-type="success">成功</button>
        <button data-type="warning">警告</button>
        <button data-type="error">失败</button>
    </div>
    <script>
        function setClass(evt,className){
            evt.target.className = className;
        }
        function toggle(...actions){
            return function(...args){
               console.log(actions);
               let action = actions.shift();
               actions.push(action)
               return action.apply(this,args);
            }
        }
        const oBtn   = document.querySelector('#btn-t');
        oBtn.onclick = toggle(
            evt=>setClass(evt,'on') ,
            evt=>setClass(evt,'off'),
            evt=>setClass(evt,'warning'),
        )
    </script>
    <script src="./js/factory.js"></script>
    <script src="./js/index.js"></script>
</body>
</html>

;(function(){
    const oBtn = document.querySelector('.button-box')
    const oApp = document.querySelector('#app')
    const factory = new Factory(oApp)
    const  getType = tar=>tar.getAttribute('data-type')
    const init = ()=>(bindEvent())

    const creates= {
        'success' : e => {factory.create('success', '成功！')},
        'warning' : e => {factory.create('warning', '警告！')},
        'error' : e => {factory.create('error', '失败！')},
    }

    const bindEvent = ()=>{
        oBtn.addEventListener('click',handleBtnClick(creates),false)
    }

    const  handleBtnClick = actions=>{
        return function(e){
            const tar = e.target
            tar.tagName.toLowerCase() == 'button' &&  actions[getType(tar)].apply([e])       
        }
    }

    init()
})()


class Model{
    constructor(type){
        this.type = type;
    }

    get getClassName(){
        return 'model-container ' + this.type;
    }
}

class SuccessModel extends Model{
    constructor(){
        super("success")
    }

}

class WarningModel extends Model{
    constructor(){
        super("warning")
    }

}

class ErrorModel extends Model{
    constructor(){
        super("error")
    }

}

class Factory{
    constructor(dom){
        this.dom = dom;
        this.models = {
            success : new SuccessModel(),
            warning : new WarningModel(),
            error : new ErrorModel()
        }
    }
    create(type, title){
        const model = this.models[type];
        if(!model){
           throw new Error('no this model');
        }
        this.dom.className = model.getClassName;
        this.dom.children[0].innerHTML = title;
        return model
    }
}