examples/modal/index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Vue.js Modal Example</title>
    <script src="../../dist/vue.js"></script>
    <link rel="stylesheet" href="modal.css">
  </head>
  <body>
    <!-- template for the modal component -->
    <script type="x/template" id="modal-template">
      <div class="modal-mask" v-show="show" transition="modal">
        <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="show = false">
                  OK
                </button>
              </slot>
            </div>
          </div>
        </div>
      </div>
    </script>

    <script>
      // register modal component
      Vue.component('modal', {
        template: '#modal-template',
        props: {
          show: {
            type: Boolean,
            required: true,
            twoWay: true    
          }
        }
      })
    </script>

    <!-- app -->
    <div id="app">
      <button id="show-modal" @click="showModal = true">Show Modal</button>
      <!-- use the modal component, pass in the prop -->
      <modal :show.sync="showModal">
        <!--
          you can use custom content here to overwrite
          default content
        -->
        <h3 slot="header">custom header</h3>
      </modal>
    </div>

    <script>
      // start app
      new Vue({
        el: '#app',
        data: {
          showModal: false
        }
      })
    </script>
  </body>
</html>