我有以下HTML项目(menubox):
<div class="uiContextualLayerPositioner uiLayer" data-testid="undefined" data-ownerid="u_0_10" style="width: 473px; left: 288px; top: 290px;">
<div class="uiContextualLayer _5v-0 _53il uiContextualLayerBelowLeft">
<div class="_54nq _57di _558b _2n_z" id="u_0_y">
<div class="_54ng">
<ul class="_54nf" role="menu">
<li class="_54ni _5ipo __MenuItem" role="presentation">
<a class="_54nc _54nu" href="#" role="menuitemcheckbox">
<span>
<i class="mrs img sp_Kw8-3yVLtZo sx_864bd8"></i>
<span class="_54nh">Item1</span>
</span>
</a>
</li>
<li class="_54ni _5ipo _54nd __MenuItem" role="presentation">
<a class="_54nc _54nu" href="#" data-testid="notif_setting_higlights" role="menuitemcheckbox" aria-checked="true">
<span>
<i class="mrs img sp_Kw8-3yVLtZo sx_864bd8">
</i>
<span class="_54nh">Item2</span>
</span>
</a>
</li>
<li class="_54ni _5ipo __MenuItem" role="presentation">
<a class="_54nc _54nu" href="#" role="menuitemcheckbox">
<span>
<i class="mrs img sp_Kw8-3yVLtZo sx_864bd8"></i>
<span class="_54nh">Item3</span>
</span>
</a>
</li>
<li class="_54ni _5ipo __MenuItem" role="presentation">
<a class="_54nc _54nu" href="#" role="menuitemcheckbox">
<span>
<i class="mrs img sp_ey5BbZl6hUH sx_780712">
</i>
<span class="_54nh">Item4</span>
</span>
</a>
</li>
</ul>
</div>
</div>
</div>
</div>
我可以看到取消选择了Item1,并选择了Item2:
aria-checked="true"
我想取消选择Item2并选择Item1。为此,从Item1中获取表示已选择
的objectID_54nc _54nu
并致电
document.getElementById("_54nc _54nu").setAttribute("aria-checked", true)', 'about: blank', 0)
但没有发生。我错过了什么?
P.S。我看到所有类的对象ID都是相同的,但我也尝试了其他id。也许我误解了班级的id问题,也许是它的不同之处。请指点我。 :)
答案 0 :(得分:1)
document.getElementById()
不正确,因为您的元素都没有id
您想使用document.getElementsByClassName()