ES6实现小案例--自定义弹框

按照国际惯例先放效果图

 

index.html

<!DOCTYPE html>
<html lang="en">

head>
  meta charset="UTF-8"name="viewport" content="width=device-width,initial-scale=1.0"http-equiv="X-UA-Compatible"="ie=edge"title>demo</link rel="stylesheet" href="./msg.css"style>
    #pop {
      border: 0 none;
      color #fff
      outline none
      padding 10px 20px
      font-size 18px
      background #2594f0
      cursor pointer;
    }

    #pop:active  blue}
  bodybutton id="pop">弹个框button<!--   <div class="msg__wrap">
    <div class="msg-header">
      <span>确认删除</span>
      <span class="msg-header-close-button">×</span>
    </div>
    <div class="msg-body">
      <div class="msg-body-icon">
        <div class="msg-body-icon-wrong"></div>
      </div>
      <div class="msg-body-content">是否删除</div>
    </div>
    <div class="msg-footer">
      <button class="msg-footer-btn msg-footer-cancel-button">算了吧</button>
      <button class="msg-footer-btn msg-footer-confirm-button">好的</button>
    </div>
  </div> -->
 
  script src="./msg.js"></scripttype="text/javascript"
    document.querySelector('#pop).addEventListener(click,function() {
      new $Msg({
        content: 贤者模式马上就过去了...真的要清空吗?<span style="color: orange;">~~~</span>(e){
          console.log("confirm);
          console.log(this);
        },cancel:cancel20pxlightgreen
        },useHTML:true
      });
    });
  html>

msg.css

/* 弹出框最外层 */
.msg__wrap {
  position: fixed;
  top: 50%;
  left:
  z-index: 10;
  transition: all .3s;
  transform: translate(-50%,-50%) scale(0,0);
  max-width:

  background: #fff;
  box-shadow: 0 0 10px #eee;
  font-size: 10px;
}

 弹出框头部 
.msg__wrap .msg-header {
  padding: 10px 10px 0 10px; 1.8em;
}

.msg__wrap .msg-header .msg-header-close-button {
  float: right;
  cursor: pointer;
}

 弹出框中部 
.msg__wrap .msg-body { 10px 10px 10px 10px;
  display: flex;
}

 图标 
.msg__wrap .msg-body .msg-body-icon{
  width: 80px;
}

.msg__wrap .msg-body .msg-body-icon div{ 45px;
  height:
  margin: 0 auto;
  line-height:
  color:
  border-radius: 50% 50%; 2em;
}

.msg__wrap .msg-body .msg-body-icon .msg-body-icon-success{
  background: #32a323;
  text-align: center;
}

.msg__wrap .msg-body .msg-body-icon .msg-body-icon-success::after{
  content: "成";
}

.msg__wrap .msg-body .msg-body-icon .msg-body-icon-wrong{ #ff8080;

.msg__wrap .msg-body .msg-body-icon .msg-body-icon-wrong::after{ "误";
}

.msg__wrap .msg-body .msg-body-icon .msg-body-icon-info{ #80b7ff;

.msg__wrap .msg-body .msg-body-icon .msg-body-icon-info::after{ "注";
}

 内容 
.msg__wrap .msg-body .msg-body-content{
  min-width: 200px; 1.5em;
  word-break: break-all; flex;
  align-items: center;
  padding-left: 10px;
  box-sizing: border-box;
}

 弹出框底部 
.msg__wrap .msg-footer { 0 10px 10px 10px;
  flex-direction: row-reverse;
}

.msg__wrap .msg-footer .msg-footer-btn { 50px; 30px;
  border: 0 none;
  outline: none; 1em; 2px;
  margin-left: 5px; pointer;
}

.msg__wrap .msg-footer .msg-footer-cancel-button{
  background-color: #ff3b3b;
}

.msg__wrap .msg-footer .msg-footer-cancel-button:active{ #ff6f6f;
}

.msg__wrap .msg-footer .msg-footer-confirm-button{ #4896f0;
}

.msg__wrap .msg-footer .msg-footer-confirm-button:active{ #1d5fac;
}

 遮罩层 
.msg__overlay { 0;
  right:
  bottom: 5; rgba(0,.4);
  opacity: 0;
}

msg.js

//放入自执行的匿名函数,避免污染全局作用域
//将window和document作为参数传入,可以直接在内部获取,不用再去外部找,性能更优
(function(window,document){
    构造函数
    let Msg=(options){
        初始化一个弹出框
        this._init(options);
    }

    初始化一个弹出框
    Msg.prototype._init=function({content="",confirm=null,cancel=false,contentStyle={},contentFontSize="1.5em"}){
        this.content=content;
        this.confirm=confirm;
        this.cancel=cancel;
        this.useHTML=useHTML;
        this.contentStyle=contentStyle;
        this.contentFontSize=contentFontSize;

        生成DOM元素
        ._createElement();
        绑定事件
        this._bind([this._el,._overlay]);
        显示
        this._show([._overlay]);
    }

    生成DOM元素
    Msg.prototype._createElement=(){
        let wrap=document.createElement("div");
        wrap.className="msg__wrap";
        换行前加上\转义
        wrap.innerHTML='<div class="msg-header">\
                          <span>确认删除</span>\
                          <span class="msg-header-close-button">×</span>\
                        </div>\
                        <div class="msg-body">\
                          <div class="msg-body-icon">\
                            <div class="msg-body-icon-info"></div>\
                          </div>\
                          <div class="msg-body-content"></div>\
                        </div>\
                        <div class="msg-footer">\
                          <button class="msg-footer-btn msg-footer-cancel-button">算了吧</button>\
                          <button class="msg-footer-btn msg-footer-confirm-button">好的</button>\
                        </div>';

        根据传入的参数控制content样式
        let contentDom=wrap.querySelector(".msg-body .msg-body-content");
        用解构赋值来合并对象
        const contentStyle={
            contentFontSize:.contentFontSize,....contentStyle
        }
        for(let i in contentStyle){
            如果是自身的属性
            if(contentStyle.hasOwnProperty(i)){
                style[i]==>style.i
                i是属性名,contentStyle[i]是属性值
                contentDom.style[i]=contentStyle[i];
            }
        }
        如果使用html
        if(.useHTML){
            contentDom.innerHTML=.content;
        }else{
            contentDom.innerText=.content;
        }

        let overlay=document.createElement("div");
        overlay.className="msg__overlay"this._el=wrap;
        this._overlay=overlay;
    }

    显示
    Msg.prototype._show=([el,overlay]){
        document.body.appendChild(el);
        document.body.appendChild(overlay);

        设置动画效果显示
        延迟实现异步效果
        setTimeout((){
            el.style.transform='translate(-50%,-50%) scale(1,1)';        
            overlay.style.opacity=1;    
        });

    }

    绑定事件
    Msg.prototype._bind=隐藏事件
        const hideMsg=;        
            overlay.style.opacity=0;

            动画结束后移除元素(css里设置的动画时间是300ms)
            setTimeout((){
                document.body.removeChild(el);
                document.body.removeChild(overlay);
            },300);            
        }

        取消事件
        const cancel=(e){
            如果传入了回调,则执行回调,参数是e
            _this.cancel && _this.cancel.call(._cancel,e);
            hideMsg();
        }

        确认事件
        const confirm=(e){
            _this.confirm && _this.confirm.call(_this.confirm,1)">点击遮罩
        overlay.addEventListener("click"点击右上角叉叉
        el.querySelector(".msg-header .msg-header-close-button").addEventListener("click"点击取消按钮
        el.querySelector(".msg-footer .msg-footer-cancel-button").addEventListener("click"点击确认按钮
        el.querySelector(".msg-footer .msg-footer-confirm-button").addEventListener("click"挂到window上可全局访问
    window.$Msg=Msg;

})(window,document);

 

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