场景

. 模态框是web开发过程中必不可少的一部分, 所以需要定制一个组件

解决

. 组件

<template>
    <transition name="modal">
        <div class="modal-mask">
            <div class="modal-wrapper">
                <div class="modal-container">

                    <div class="modal-header">
                        <slot name="header">
                            {{ modal_heading }}
                        </slot>
                    </div>

                    <div class="modal-body">
                        <slot name="body">
                            {{ modal_body }}
                        </slot>
                    </div>

                    <div class="modal-footer">
                        <slot name="footer">
                            <button class="modal-default-button btn-primary" @click="$emit('close')">
                                确定
                            </button>
                        </slot>
                    </div>
                </div>
            </div>
        </div>
    </transition>
</template>

<script>
    export default {
        name: "modal",
        data : function () {
           return {
               showModal: false
           }
        },
        props : ['modal_heading', 'modal_body']
    }
</script>

<style scoped>
    .modal-mask {
        position: fixed;
        z-index: 9998;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, .5);
        display: table;
        transition: opacity .3s ease;
    }

    .modal-wrapper {
        display: table-cell;
        vertical-align: middle;
    }

    .modal-container {
        width: 300px;
        margin: 0px auto;
        padding: 20px 30px;
        background-color: #fff;
        border-radius: 2px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, .33);
        transition: all .3s ease;
        font-family: Helvetica, Arial, sans-serif;
    }

    .modal-header h3 {
        margin-top: 0;
        color: #42b983;
    }

    .modal-body {
        margin: 20px 0;
    }

    .modal-default-button {
        float: right;
    }

    /*
     * The following styles are auto-applied to elements with
     * transition="modal" when their visibility is toggled
     * by Vue.js.
     *
     * You can easily play with the modal transition by editing
     * these styles.
     */

    .modal-enter {
        opacity: 0;
    }

    .modal-leave-active {
        opacity: 0;
    }

    .modal-enter .modal-container,
    .modal-leave-active .modal-container {
        -webkit-transform: scale(1.1);
        transform: scale(1.1);
    }

</style>

. 使用

      <button id="show-modal" @click="errorShow">Show Modal</button>
      <modal v-if="showModal" @close="showModal = false" :modal_body="modal_body" :modal_heading="modal_heading"> </modal>