Question

js如何获取option的值？

比如
<select>
<option>请选择</option>
<option>111</option>
<option>222</option>
<option>333</option>
<option>444</option>
</select>
我想点击提交按钮时获取到当前的选择的值 并且把这个值 赋给空的<span>标签 有办法获取到当前的值吗？

Answer 1

<select id="sel">
<option>请选择</option>
<option>111</option>
<option>222</option>
<option>333</option>
<option>444</option>
</select>
<span id="sp"></span>
<button onclick="sub()">submit</button>

0000000000000000

var sub = function(){
sp.innerHTML = sel.children[sel.selectedIndex].innerHTML;

}