单击按钮时如何更改选定的选项值

Question

  

按钮单击

时更改选项值

<button class="btn1">clickme1</button>
<button class="btn2">clickme2</button>

<select>
    <option value="1">changevalue1</option>
    <option value="2">changevalue2</option>
</select>

Demo

Answer 1

检查更新的JSFiddle： - JSFiddle

$('#dynamicChange').val('1').trigger('change');

$('#dynamicChange').val('2').trigger('change');