小编LuR*_*LuR的帖子

我的js代码存在一些问题,我不知道如何修复它这是我的代码:

  $('#btn_valid').click(function(){

    var data = new Array();
    var data_id;
    var data_picture;
    var data_title;
    var data_p_picture;
    var data_p_title;
    var data_s_picture;
    var data_s_title;
    var data_reaction;
    var data_datetime;
    var i = 0;


    $('.cbx_ac:checked').each(function(){

      data_id = $(this).attr('data-id');
      data_picture = $(this).attr('data-picture');
      data_title= $(this).attr('data-title');
      data_p_picture = $(this).attr('data-p_picture');
      data_p_title = $(this).attr('data-p_title');
      data_s_picture = $(this).attr('data-s_picture');
      data_s_title = $(this).attr('data-s_title');
      data_reaction = $(this).attr('data-reaction');
      data_datetime = $(this).attr('data-datetime');

      console.log(data_id); // I Get a value here ( 2564115647_15498456665 )

      data[i]['data_id'] = data_id;  //Error here :  Uncaught TypeError: Cannot set property 'data_id' of undefined …

我在按钮属性中有一些带有一些文本的按钮，我想要的是当我点击按钮时它会复制到剪贴板

$('.copyboard').on('click', function(e) {
  e.preventDefault();

  var copyText = $(this).attr('data-text');
  console.log(copyText);
  copyText.text().select();
  document.execCommand("copy");
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button data-text="Hello World 1" class="copyboard">Copy</button></div>
<button data-text="Hello World 2" class="copyboard">Copy</button></div>
<button data-text="Hello World 3" class="copyboard">Copy</button></div>

当我点击它返回这个：

未捕获的类型错误：copyText.select 不是函数