jQuery下拉菜单验证

Question

I have a simple drop down menu in html. The html code is shown below.

<select id="dmm_ios">
  <option value="1.0.0">1.0.0</option>
  <option value="1.1.1">1.1.1</option>
  <option value="1.2.3">1.2.3</option>
  ....The options available go on and on..
</select>

I also have json code similar to the drop down menu. My goal would be to check to see which option the user selected, and then I'd like to be able to see which json objects have similar values.

I thought I'd be comparing values so I did something like this...

var ios = $("#ddm_ios").val();

if ($.inArray(ios, Products.iphone4.GeveyPro.ios) === -1) {

} else {

}

But I'm not sure the code will work. So I try something simple. I tried to find the "typeof ios", and I got undefined as a result.

Answer 1

你有一个错字： ddm_ios在你的选择应该是dmm_ios以配合您的下拉列表中，反之亦然实际ID。

var ios = $("#dmm_ios").val();