JS 参考手册

JS 参考手册(类别排序) JS 参考手册(字母排序)

JavaScript

JS Array JS Boolean JS Classes JS Date JS Error JS Global JS JSON JS Math JS Number JS 运算符 JS RegExp JS 语句 JS String

HTML DOM

DOM Attributes DOM Document DOM Element DOM Events DOM Event 对象 DOM HTMLCollection DOM Location DOM Navigator DOM Screen DOM Style
alignContent alignItems alignSelf animation animationDelay animationDirection animationDuration animationFillMode animationIterationCount animationName animationTimingFunction animationPlayState background backgroundAttachment backgroundColor backgroundImage backgroundPosition backgroundRepeat backgroundClip backgroundOrigin backgroundSize backfaceVisibility border borderBottom borderBottomColor borderBottomLeftRadius borderBottomRightRadius borderBottomStyle borderBottomWidth borderCollapse borderColor borderImage borderImageOutset borderImageRepeat borderImageSlice borderImageSource borderImageWidth borderLeft borderLeftColor borderLeftStyle borderLeftWidth borderRadius borderRight borderRightColor borderRightStyle borderRightWidth borderSpacing borderStyle borderTop borderTopColor borderTopLeftRadius borderTopRightRadius borderTopStyle borderTopWidth borderWidth bottom boxShadow boxSizing captionSide caretColor clear clip color columnCount columnFill columnGap columnRule columnRuleColor columnRuleStyle columnRuleWidth columns columnSpan columnWidth counterIncrement counterReset cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap cssFloat font fontFamily fontSize fontStyle fontVariant fontWeight fontSizeAdjust height isolation justifyContent left letterSpacing lineHeight listStyle listStyleImage listStylePosition listStyleType margin marginBottom marginLeft marginRight marginTop maxHeight maxWidth minHeight minWidth objectFit objectPosition opacity order orphans outline outlineColor outlineOffset outlineStyle outlineWidth overflow overflowX overflowY padding paddingBottom paddingLeft paddingRight paddingTop pageBreakAfter pageBreakBefore pageBreakInside perspective perspectiveOrigin position quotes resize right scrollBehavior tableLayout tabSize textAlign textAlignLast textDecoration textDecorationColor textDecorationLine textDecorationStyle textIndent textOverflow textShadow textTransform top transform transformOrigin transformStyle transition transitionProperty transitionDuration transitionTimingFunction transitionDelay unicodeBidi userSelect verticalAlign visibility width wordBreak wordSpacing wordWrap widows zIndex
DOM Window

Web APIs

API Console API Geolocation API History API Storage

HTML 对象

<a> <abbr> <address> <area> <article> <aside> <audio> <b> <base> <bdo> <blockquote> <body> <br> <button> <canvas> <caption> <cite> <code> <col> <colgroup> <datalist> <dd> <del> <details> <dfn> <dialog> <div> <dl> <dt> <em> <embed> <fieldset> <figcaption> <figure> <footer> <form> <head> <header> <h1> - <h6> <hr> <html> <i> <iframe> <img> <ins> <input> button <input> checkbox <input> color <input> date <input> datetime <input> datetime-local <input> email <input> file <input> hidden <input> image <input> month <input> number <input> password <input> radio <input> range <input> reset <input> search <input> submit <input> text <input> time <input> url <input> week <kbd> <label> <legend> <li> <link> <map> <mark> <menu> <menuitem> <meta> <meter> <nav> <object> <ol> <optgroup> <option> <output> <p> <param> <pre> <progress> <q> <s> <samp> <script> <section> <select> <small> <source> <span> <strong> <style> <sub> <summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

其他参考手册

CSSStyleDeclaration JS 类型转换


HTML DOM lastChild 属性

❮ Element 对象

实例

获取 <ul> 元素的最后一个子节点的HTML内容:

var x = document.getElementById("myList").lastChild.innerHTML;
亲自试一试 »

页面下方有更多实例。


定义和用法

lastChild property 属性将指定节点的最后一个子节点作为节点对象返回。

此属性与 lastElementChild 的区别在于, lastChild 将最后一个子节点作为元素节点、文本节点或注释节点返回(取决于最后一个节点), 而 lastElementChild 将最后一个子节点作为元素节点返回(忽略文本和注释节点)。

注释: 素内部的空白被视为文本,文本被视为节点(请参阅"更多示例")。

该属性是只读的。

提示: 使用 element.childNodes 属性返回指定节点的任何子节点。

提示: 要返回指定节点的第一个子节点,请使用 firstChild 属性。


浏览器支持

属性
lastChild Yes Yes Yes Yes Yes

语法

node.lastChild


技术细节

返回值: Node 节点对象,表示节点的最后一个子节点,如果没有子节点,则为 null
DOM 版本 Core Level 1 Node Object

更多实例

实例

在这个例子中,我们演示了空格如何与这个属性相冲突。

获取 <div> 元素的最后一个子节点的节点名:

<!--
Whitespace inside elements is considered as text, and text is considered as nodes
In this example, there is whitespace before <p>, before <span> and after <span>
Therefore, the last child node of <div> is a #text node, and not the <span> element you expected
-->

<div id="myDIV">
  <p>Looks like first child</p>
  <span>Looks like last Child</span>
</div>

<script>
var x = document.getElementById("myDIV").lastChild.nodeName;
document.getElementById("demo").innerHTML = x;
</script>
亲自试一试 »

实例

但是,如果我们从源代码中删除空白,则<div>中没有#text节点,这将使<span>元素成为最后一个子节点:

<div id="myDIV"><p>First child</p><span>Last Child</span></div>

<script>
var x = document.getElementById("myDIV").lastChild.nodeName;
document.getElementById("demo").innerHTML = x;
</script>
亲自试一试 »

实例

获取 <select> 元素的最后一个子节点的文本:

var x = document.getElementById("mySelect").lastChild.text;
亲自试一试 »

相关页面

HTML DOM 参考手册: node.firstChild 属性

HTML DOM 参考手册: node.childNodes 属性

HTML DOM 参考手册: node.parentNode 属性

HTML DOM 参考手册: node.nextSibling 属性

HTML DOM 参考手册: node.previousSibling 属性

HTML DOM 参考手册: node.nodeName 属性


❮ Element 对象