Edit in JSFiddle

Vue.component('vue-dialog', {
  template: '\
    <transition name="vue-dialog">\
      <div class="vue-dialog-mask" v-if="show">\
        <div class="vue-dialog-wrapper">\
          <div class="vue-dialog">\
            <div v-if="!!options.title" class="vue-dialog-title" v-bind:style="options.title.style">\
              <h5>{{options.title.text}}</h5>\
              <i class="vue-icon" @click="cancel">×</i>\
            </div>\
            <div v-if="!!options.content" class="vue-dialog-content" v-bind:style="options.content.style" v-html="options.content.text"></div>\
            <div v-if="!!options.btns" class="vue-dialog-btns">\
              <button v-for="(item, index) in options.btns"  @click="callback(index)">{{item}}</button>\
            </div>\
          </div>\
        </div>\
      </div>\
    </transition>\
  ',
  props: ['show', 'options', 'callback'],
  methods: {
    cancel: function() {
      this.$emit('update:show', false);
    }
  }
});

new Vue({
  el: '#app',
  data: {
    showModal: false,
    optionsObj: {
      title: {
        text: '我是标题',
        style: 'background-color:#8DCE16; color:#fff;'
      },
      content: {
        text: '我是第一行'
      },
      btns: ['取消', '确认']
    }
  },
  methods: {
    confirm: function() {
      this.showModal = true;
    },
    modelCallback: function(index) {
      alert(index);
      this.showModal = false;
    }
  }
})

<div id="app">
  <vue-dialog 
    :show.sync="showModal"
    :options="optionsObj" 
    :callback="modelCallback">
  </vue-dialog>
  <button class="vue-btn vue-btn-block vue-btn-secondary" @click="confirm">confirm</button>
</div>

/**
* vue-dialog
*/
* {
  margin: 0;
  padding: 0;
}
.vue-dialog-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;
}

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

.vue-dialog {
  width: 60%;
  margin: 0px auto;
  background-color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .33);
  transition: all .3s ease;
  font-family: "microsoft yahei";
}

.vue-dialog-title {
  height: 40px;
  padding: 0px 10px;
  line-height: 40px;
  color: #fff;
  background-color: #000;
}

.vue-dialog-title h5 {
  margin: 0;
  padding: 0;
  float: left;
}

.vue-dialog-title i {
  float: right;
  font-size: 20px;
}

.vue-dialog-content {
  font-size: 15px;
  padding: 30px 15px;
}

.vue-dialog-btns {
  display: flex;
  flex-flow: row;
  text-align: center;
}

.vue-dialog-btns button {
  flex: 1;
  border: none;
  outline: none;
  padding: 10px 0px;
  background-color: #fff;
  border-top: 1px solid hsl(0, 0%, 92%);
  border-right: 1px solid hsl(0, 0%, 92%);
}

.vue-dialog-btns button:active {
  background: #ecf0f1;
}

.vue-dialog-btns button:last-child {
  border-right: none;
}
/*过渡效果*/

.vue-dialog-enter,
.vue-dialog-leave {
  opacity: 0;
}

.vue-dialog-enter .vue-dialog,
.vue-dialog-leave .vue-dialog {
  -webkit-transform: scale(1.1);
  transform: scale(1.1);
}