<template>
 <div id="tip_alertModal">
  <div class="t-alert-mask"></div>
  <div class="t-alert-container">
   <div class="t-alert-title">
    <span>
     {{title}}
    </span>
    <img @click="close" src="/UploadFiles/2021-04-02/guanbi.png">

3.定义一个js文件


import Vue from 'vue'; 
import Alert from '@/components/public/alertModal'; //引入刚才写的弹框组件 
let AlertConstructor = Vue.extend(Alert); // 返回一个“扩展实例构造器” 

let AlertModal = (o) => {
 let alertDom = new AlertConstructor({
  el: document.createElement('div'); //将Alert组件挂载到新创建的div上 
 })
 document.body.appendChild(alertDom.$el); //把Alert组件的dom添加到body里 
 
 // 标题
 alertDom.title = o.title || '信息';
 // 单条内容
 alertDom.content = o.content;
 // 关闭按钮
 alertDom.cancelBtn = o.cancelBtn;

 // 弹框三个事件 右上角关闭 确定 取消
 alertDom.a_close = o.close || null;
 alertDom.a_confirm = o.confirm || null;
 alertDom.a_cancel = o.cancel || null;

}
export default AlertModal;




4.mian.js

import alert from '@/common/alertModal' //这里引入的是js文件
Vue.prototype.$alert = alert;

5.在任意组件调用


<template>
 <div>
  <button @click="operate">点击调用弹框</button>
 </div>
</template>

<script>
export default {
 methods: {
  operate() {
   this.$alert({
    title: '信息',
    content: '登入成功！',
    cancelBtn: true, //这个是启用取消按钮，
    close() {
     // 这里执行点击右上角需要做的事，默认执行关闭弹框
    },
    confirm() {
     // 这里执行点击确定按钮需要做的事，默认执行关闭弹框
    },
    cancel() {
     // 这里执行点击取消按钮需要做的事，默认执行关闭弹框
    }
   })
  }
 }
}
</script>




取消按钮开启

调用之后是往body添加元素

5.通过window.alertIsShow，给window增加一个属性，来控制一个页面只会出现一个弹框


methods: {
  operate () {
   if (!window.alertIsShow) {
    // 弹框模板有个 delete window.alertIsShow 是为了弹框关闭之后能再次显示
    this.$alert({
     title: '信息',
     content: '登入成功！',
     cancelBtn: true,
     close () {
      // 这里执行点击右上角需要做的事，默认执行关闭弹框
     },
     confirm () {
      // 这里执行点击确定按钮需要做的事，默认执行关闭弹框
     },
     cancel () {
      // 这里执行点击取消按钮需要做的事，默认执行关闭弹框
     }
    })
    window.alertIsShow = true;
   }
  }
 }




6.最后是弹框组件的less样式


<style lang="less" scoped>
 #tip_alertModal {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 100;
  width: 100%;
  height: 100%;
  
  .t-alert-mask {
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background-color: rgba(0, 0, 0, .3);
  }

  .t-alert-container {
   position: absolute;
   top: 50%;
   left: 50%;
   min-width: 240px;
   max-width: 400px;
   height: auto;
   background-color: #fff;
   transform: translate(-50%, -50%);
   border-radius: 4px;

   .t-alert-title {
    position: relative;
    width: 100%;
    height: 40px;
    line-height: 40px;
    background-color: rgba(115, 134, 255, 1);
    border-radius: 4px 4px 0px 0px;

    span {
     position: absolute;
     top: 50%;
     left: 10px;
     font-weight: 500;
     font-size: 16px;
     color: #fff;
     transform: translate(0, -50%);
    }

    img {
     position: absolute;
     top: 50%;
     right: 10px;
     transform: translate(0, -50%);
     cursor: pointer;
    }
   }

   .t-alert-content {
    text-align: center;
    span {
     font-family: PingFangSC-Regular;
     font-weight: 400;
     font-size: 14px;
     color: rgba(51,51,51,1);
    }

    span.content-text {
     display: inline-block;
     width: 100%;
     height: auto;
     font-weight: 400;
     font-size: 14px;
     color: #333;
     padding: 20px 18px;
    }
    .t-content-list {
      min-width: 320px;
      height: auto;
      text-align: left;
     .list-title {
      position: relative;
      padding: 10px 0 10px 10px;
      img {
       display: inline-block;
       position: absolute;
       width: 20px;
       margin-right: 10px;
      }
      span {
       display: inline-block;
       vertical-align: middle;
       padding-left: 31px;
      }
     }
     .list-content {
      width: 100%;
      height: auto;
      ul {
       padding-bottom: 10px;
       li {
        width: 100%;
        height: auto;
        padding-bottom: 10px;
        span {
         vertical-align: top;
        } 
        span.title {
         display: inline-block;
         padding-left: 41px;
         padding-right: 3px;
         text-align: left;
        }
       }
      }
     }
    }
   }

   .t-alert-confirm {
    width: 100%;
    padding-bottom: 17px;
    text-align: center;

    button {
     display: inline-block;
     width: 80px;
     height: 36px;
     border: none;
     background: rgba(115, 134, 255, 1);
     font-weight: 400;
     font-size: 16px;
     color: #fff;
     border-radius: 4px;
     outline: none;
     cursor: pointer;
    }
    .cancel-btn {
     margin-left:20px;
     background:rgba(151,193,234,1);
     font-family: PingFangSC-Regular;
     font-weight: 400;
     font-size: 16px;
     color: rgba(255,255,255,1);  
    }
   }
  }
 }
</style>




如果本篇文章对你有帮助的话，很高兴能够帮助上你。
补充知识：Vue注册全局组件-弹窗组件
在src目录下新建components文件夹
1.新建module文件夹，然后新建v-alert.vue


<template>
 <transition name="fade">
  <div
    class="v-alert g-center"
    :style="{zIndex}">
   <div
     class="v-cont"
     :class="{shadow:!hideCont}"
     :style="[innerWidth]">
    <div
      v-if="title.trim()"
      :style="[{backgroundColor:bgColorTit,color:cancelCol},titleStyle]"
      class="title g-font18">
     {{title}}
     <span class="title-data">{{titleData}}</span>
    </div>
    <div
      v-if="isCancel"
      class="v-cancel">
     <div
       class="cancel-icon"
       :style="{color:cancelCol}"
       @click="cancel">
      &#xe656;
     </div>
    </div>
    <slot name="slot3"></slot>
    <div
      v-if="!hideCont"
      :style="styles"
      class="content">
     <slot></slot>
    </div>
    <slot name="slot2"></slot>
   </div>
   <div
     class="g-fixed alert-wrap"
     @click="$emit('cancel')"
     :style="{backgroundColor:bgWrapColor}"></div>
  </div>
 </transition>
</template>




<script>
 export default {
  name: "v-alert",
  props: {
   title: {default: ""},
   // titFontSize:{default: '16'},
   bgColorTit: {default: "#40404C"},
   bgColor: {default: "#fff"}, // 背景色
   bgWrapColor: {default: "rgba(42, 47, 59, 0.6)"}, //外套背景色
   cancelCol: {default: "#fff"}, //按钮颜色
   width: {required: true, type: Number}, //宽度
   minWidth: {type: Number, default: 0},
   isCancel: {type: Boolean, default: true}, //是否显示关闭按钮
   titleData: {default: ""},
   hideCont: {type: Boolean, default: false}, //是否隐藏cont
   zIndex: {default: 2000},
   styles: {
    default() {
     return {};
    },
    type: Object
   },
   titleStyle: {
    default() {
     return {};
    },
    type: Object
   },
  },
  components: {},
  computed: {
   innerWidth() {
    let dfu = {
     backgroundColor: this.bgColor
    };
    this.minWidth > 0
     "cancel");
   }
  },
  mounted() {
   document.addEventListener(
    "keydown",
    event => {
     let keyCode = this.$_lib.getKeycode(event);
     if (keyCode === 'Escape' || keyCode === 27) this.$emit("cancel");
    },
    false
   );
  }
 };
</script>




<style lang="scss"
  rel="stylesheet/scss"
  scoped>
 .v-alert {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2000;
  .alert-wrap {
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   /*z-index: 2000;*/
  }
  .v-cont {
   min-width: 100px;
   min-height: 100px;
   background-color: #ffffff;
   position: relative;
   border-radius: 2px;
   .shadow {
    box-shadow: 0 2px 30px rgba(42, 47, 59, 0.2);
   }
   z-index: 2001;
   .title {
    width: 100%;
    line-height: 70px;
    color: #ffffff;
    padding-left: 30px;
   }
   .title-data {
    color: #f8e19a;
   }
   .content {
    padding: 40px;
    /*padding: 60px 40px 50px 40px;*/
    word-wrap: break-word;
    text-align: left;
   }
  }
 
  .v-cancel {
   position: absolute;
   top: 0;
   right: 0;
   width: 100%;
   height: 70px;
  }
  .cancel-icon {
   position: absolute;
   text-align: center;
   width: 20px;
   height: 20px;
   line-height: 20px;
   right: 20px;
   top: 50%;
   margin-top: -10px;
   color: #ffffff;
   cursor: pointer;
   transition: 200ms;
   &:hover {
    -webkit-transform: rotate(90deg);
    -moz-transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    -o-transform: rotate(90deg);
    transform: rotate(90deg);
   }
  }
 }
</style>


2.在nodule同级目录新建vue-component.js


import VAlert from './v-alert'; //弹窗
 
export default {
 install(Vue) {
  Vue.component('VAlert', VAlert);
 }
};


3.在main.js中注册为全局组件

import vueComponent from "./components/vue-component";
Vue.use(vueComponent);

4.在其他组件可以直接用了,无需import


<template>
  <v-alert
   v-if="is_alert"
   @cancel="is_alert=false"
   bg-color-tit="#40404C"
   cancel-col="#fff"
   :title="提示"
   :width="680">
   <div></div>
  </v-alert>
</template>


以上这篇vue 实现一个简单的全局调用弹窗案例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。