jquery - jQuery获取select onChange的值(jQuery get value of select onChange)

Question

I was under the impression that I could get the value of a select input by doing this $(this).val();

(我的印象是我可以通过执行$(this).val();来获取选择输入的值$(this).val();)

and applying the onchange parameter to the select field.

(并将onchange参数应用于选择字段。)

It would appear it only works if I reference the ID.

(它似乎只有在我引用ID时才有效。)

How do I do it using this.

(我该怎么做呢。)

  ask by Robin Knight translate from so

Answer 1

Try this-

(试试这个-)

 $('select').on('change', function() { alert( this.value ); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <select> <option value="1">One</option> <option value="2">Two</option> </select> 

You can also reference with onchange event-

(你也可以参考onchange事件 - )

 function getval(sel) { alert(sel.value); } 

 <select onchange="getval(this);"> <option value="1">One</option> <option value="2">Two</option> </select>