工作当我试图添加MouseEnter事件处理程序,以利标记它显示了我的错误:MouseEnter事件处理函数不是与李
Uncaught TypeError: list.mouseenter is not a function
var list = $('.side_bar_pages ul li')[1];
list.mouseenter(() => {
console.log('hello world')
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<section class="side_bar_pages">
<ul>
<li id="clicked_secton">
<span><img src="/icons/home.svg"></span>
<a href="/">home</a>
</li>
<li>
<span><img src="/icons/videocamera.svg"></span>
<a href="/footages">stock footage</a>
</li>
<li>
<span><img src="/icons/photocamera.svg"></span>
<a href="/images">stock photos</a>
</li>
<li>
<span><img src="/icons/hot.svg"></span>
<a href="/new">hot stock</a>
</li>
</ul>
</section>
你检查了答案吗? –