HTML里面用tab键能让select标签展开吗?
点击tab按键,然后焦点到上面,使其展开,可以做到吗?
我记得好像是不能的
<select id="test">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
var select = document.getElementById('test')
select.onfocus = function() {
var options = this.options;
this.setAttribute("size", options.length);
}
select.onblur = function() {
this.setAttribute("size", 0);
}
jsFiddle