使用Teleport实现一个模态对话框的组件

teleport ,把模板的内容移动到当前组件之外的DOM 中，可以使用 Teleport

<template>
//teleport to="body" 表示teleport内包含的内容显示到body中 .也可指定位置adj:   to="#div1"
<teleport to="body">
    <div class="modal-bg" v-if="visible">
        <div class="modal-content">
            <button class="close" @click="$emit('close-modal')"> X </button>
            <div class="model-title">{{title}}</div>
            <div class="model-body">
                <slot>
                    模态对话框
                </slot>
            </div>
        </div>
    </div>
</teleport>
</template>

<script>
export default {
    props: ["visible", "title"]
}
</script>

<style lang="less">
.modal-bg {
    background: #000;
    opacity: 0.7;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0px;
    left: 0px;
}

.modal-content {
    width: 600px;
    min-height: 300px;
    border: 1px solid #eee;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;

    .close {
        position: absolute;
        right: 10px;
        top: 5px;
        display: inline-block;
        width: 40px;
        border: none;
        cursor: pointer;

    }

    .model-title {
        background: #eee;
        color: #000;
        height: 32px;
        line-height: 32px;
        text-align: center;
    }

    .model-body {
        padding: 40px;
    }

}
</style>

Home.vue使用model

<template>
<div class="home">
    <button @click="isVisible=true">弹出一个模态对话框</button>

    <modal :visible="isVisible" :title="title" @close-modal="isVisible=false">

    </modal>
</div>
</template>

<script>
import Modal from "./Modal"
export default {
    data() {
        return {
            title: "用户登录",
            isVisible: false
        }
    },
    components: {
        Modal
    }

}
</script>

<style lang="less">
.home {
    position: relative;
}
</style>

image.png