Question

如何用jquery选择父节点下的第一代子节点

Answer 1

    <ul id="wrap">
        <li class="li1">1
            <ul>
                <li class="li1.1">1.1</li>
                <li class="li1.2">1.2</li>
            </ul>
        </li>
        <li class="li2">2
            <ul>
                <li class="li2.1">2.1</li>
                <li class="li2.2">2.2</li>
            </ul>
        </li>
    </ul>


    <script src="jquery-3.1.1.js"></script>
<script>
    //wrap下所有的的li标签
    $("#wrap").find("li").each(function () {
        console.log("Find: "+$(this).attr("class"))
    });
    //wrap下子标签
    $("#wrap").children("li").each(function(){
        console.log("Children: "+$(this).attr("class"))
    });
    

</script>

Answer 2

$（‘父节点＞子节点’）选中的就是一代子节点