JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.jquery.com/mobile/1.0b1/jquery.mobile-1.0b1.min.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0b1/jquery.mobile-1.0b1.min.css">
<!DOCTYPE html>
<html>
<head>
<title>jQuery Mobile テスト用</title>
<meta charset=utf-8 />
</head>
<body>

<div id="app">
  <div>Product Title:</div>
  <el-textarea ref="text">
  <button @click="copyTextArea">
    Copy Title To Clipboard
  </button>
  </el-textarea>
</div>

 <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.3.4/vue.min.js"></script>
</body>
</html>

JavaScript

new Vue({
  el: '#app',
  methods: {
    copyTextArea() {
      this.$refs.sharePreviewUrl.select();
      document.execCommand('copy');
    }
  },
})