js复制粘贴

html

 <span>
        支付宝账号：
        <textarea id="code">15879521147</textarea>
 </span>
 <span @click="copy">复制</span>

js

 copy() {
      var code = document.getElementById("code");
      code.select(); // 选中文本code
      document.execCommand("copy"); // 执行浏览器复制命令
      alert("复制成功");
    }

css

textarea {
      color: #333333;
      height: 35px;
      border: none;
      outline: none;
      resize: none;
      background-color: transparent;
      width: 120px;
      vertical-align: bottom;
    }

bug：对input和textarea有效