Courses in the relevant section：Common attributes of nodes: type, name and value

DOM: 元素节点、属性节点、文本节点 nodeType: 节点类型 nodeName: 节点名称 nodeValue: 节点的值 nodeType返回值: 1:元素节点 2：属性节点 3：文本节点 标签的nodeValue = null attribute: 属性 前端开发学习 例如：访问H2的属性节点 h2.attributes 返回值：NamedNodeMap{0:id,length:1} h2.attributes[0] id = "header" h2.attributes[0].nodeType 2 h2.attributes[0].nodeName "id" h2.attributes[0].nodeValue "header" h2.childNodes //返回当前元素所有的字节点 [text] h2.childNodes[0].nodeType 3 h2.childNodes[0].nodeName #text h2.childNodes[0].nodeValue "前端开发学习" 获取元素的方法： #id document.getElementById()

2022-04-060个赞

Courses in the relevant section：The relationship between nodes: father, son, brother, elder and younger are in order

ul.childNodes[3].hasChildNodes()

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Courses in the relevant section：Blocks in HTML

块级元素：<p> 内联元素：

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