javascript - 如何在 vue 模式中显示元素值？

Question

我有几个元素显示为 <li>循环中的元素。对于每个元素，我都希望在单击该元素时打开一个模式框。在模态框中，我想要特定于被单击元素的内容。

下面的数据显示了所有元素:

              {value: 10, name: "foo"},
              {value: 12, name: "bar"},
              {value: 14, name: "foobar"},
              {value: 22, name: "test"},
              {value: 1, name: "testtooo"},
              {value: 8, name: "something"}

当我点击一个元素时，我想看到 value模态框中的属性。

我为此创建了一个 fiddle :https://jsfiddle.net/hvb9hvog/14/

问题

我已经让模态工作了，但是，我怎样才能显示每个元素 value模态内的属性？

Answer 1

我确信有多种方法可以解决这个问题，但一种方法是创建一个新的 data属性(property)，我们称之为value .当你@click li你得到它的value , 将其设置为 value属性并显示 value body中的属性(property)模态 ( {{this.value}} )。

你可以有两个@click方法，因此创建另一个更新 data 的方法您刚刚创建的属性，名为 value .

Here's a fiddle

相关代码改动:

在你的li元素:

<li v-for="request in filteredRequests">
    <a href="#" @click="showModal = true; setVal(request.value)">{{request.name}}</a>
</li>

在您的模态标记中:

<modal v-if="showModal" @close="showModal = false">
    <!--
    you can use custom content here to overwrite
    default content
    -->
    <h3 slot="header">custom header</h3>
    <div slot="body">
        {{this.value}}
    </div>
</modal>

在 View 中 data :

data: {
    requests:   [
        {value: 10, name: "foo"},
        {value: 12, name: "bar"},
        {value: 14, name: "foobar"},
        {value: 22, name: "test"},
        {value: 1, name: "testtooo"},
        {value: 8, name: "something"}
    ], 
    num: 0,
    showModal: false,
    value: 9999999999
},

在 View 中 methods :

methods: {
    setVal(val) {
        this.value = val;
    }
},

Vue.component('modal', {
  template: '#modal-template'
})
var vm = new Vue({
  el: "#app",
  data: {
    requests: [{
        value: 10,
        name: "foo"
      },
      {
        value: 12,
        name: "bar"
      },
      {
        value: 14,
        name: "foobar"
      },
      {
        value: 22,
        name: "test"
      },
      {
        value: 1,
        name: "testtooo"
      },
      {
        value: 8,
        name: "something"
      }

    ],
    num: 0,
    showModal: false,
    value: 9999999999
  },
  methods: {
    setVal(val) {
      this.value = val;
    }
  },
  computed: {
    c: function() {
      return `Slider Number: (${this.num})`
    },
    filteredRequests() {
      return this.requests.filter(r => r.value > this.num)
    }
  },
});

.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);
}

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://unpkg.com/vue@2.3.4/dist/vue.js"></script>
<script type="text/x-template" id="modal-template">
  <transition name="modal">
    <div class="modal-mask">
      <div class="modal-wrapper">
        <div class="modal-container">

          <div class="modal-header">
            <slot name="header">
              default header
            </slot>
          </div>

          <div class="modal-body">
            <slot name="body">
              default body
            </slot>
          </div>

          <div class="modal-footer">
            <slot name="footer">
              default footer
              <button class="modal-default-button" @click="$emit('close')">
                OK
              </button>
            </slot>
          </div>
        </div>
      </div>
    </div>
  </transition>
</script>
<div id="app">
  <div class="form-horizontal">
    <div class="form-group">
      <label class="col-md-2 control-label">色</label>
      <div class="col-md-10">
        <input class="form-control" v-model="c" :style="{backgroundColor: c}" />
        <div class="help-block">
          <input type="range" min="0" max="360" v-model.number="num" />
          <ul class="ml-thumbs">
            <li v-for="request in filteredRequests">
              <a href="#" @click="showModal = true; setVal(request.value)">{{request.name}}</a>
            </li>
          </ul>
          <modal v-if="showModal" @close="showModal = false">
            <!--
            you can use custom content here to overwrite
            default content
          -->
            <h3 slot="header">custom header</h3>
            <div slot="body">
              {{this.value}}
            </div>
          </modal>
        </div>
      </div>
    </div>
  </div>
</div>