jQuery addClass example

Change class name on click in jQuery

HTML

<button id='btn_write_keyword_gen' class="btn btn-success" type="button">點我</button>

	  <hr>
          <p id='id_write_keyword_gen'>請按下上方的按鍵，寫稿小幫手將寫出三段草稿</p>

JavaScript

<script src="http://code.jquery.com/jquery-3.4.0.min.js"></script>
<script>
$(document).ready(function(){
  $("#btn_write_keyword_gen").on("click",function(){
  alert("hi"),

  $("#id_write_keyword_gen").html("<button id='btn_keyword_gen_append' class='btn btn-success' type='button'>點我</button>");
  $("#id_write_keyword_gen").on("click",function(){alert("hi");});
  });
  });
</script>