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JS 参考手册

JS 参考手册(字母排序)

JavaScript

JS Arrays JS Boolean JS Classes JS Dates JS Error JS Global JS Iterators JS JSON JS Maps JS Math JS Numbers JS Objects JS Operators JS Assignment JS Arithmetic JS Comparison JS Logical Operators JS Bitwise Operators JS Misc Operators JS Precedence JS Promises JS RegExp Patterns JS RegExp Reference JS Sets JS Statements JS Strings JS Typed Arrays JS Typed Reference

Window

Window Object Window Console Window History Window Location Window Navigator Window Screen

HTML DOM

HTML Documents HTML Elements HTML Attributes HTML Collection HTML NodeList HTML DOMTokenList HTML Styles
alignContent alignItems alignSelf animation animationDelay animationDirection animationDuration animationFillMode animationIterationCount animationName animationTimingFunction animationPlayState background backgroundAttachment backgroundClip backgroundColor backgroundImage backgroundOrigin backgroundPosition backgroundRepeat 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 cssFloat cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap 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

HTML Events

HTML Events HTML Event Objects HTML Event Properties HTML Event Methods

Web APIs

API Canvas API Console API Fetch API Fullscreen API Geolocation API History API MediaQueryList API Storage API Validation API Web

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> <sub> <summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

HTML DOM childNodes 属性


实例

获得 body 元素的子节点集合:

var c = document.body.childNodes;
亲自试一试 »

页面下方有更多实例。


定义和用法

childNodes 属性将节点的子节点集合作为 NodeList 对象返回。

集合中的节点按其在源代码中的显示进行排序,可以通过索引号进行访问。索引从0开始。

注释: 元素内部的空白被视为文本,文本被视为节点。注释也被视为节点。

提示: 可以使用 NodeList 对象的 length 属性来确定子节点的数量,然后可以遍历所有子节点并提取所需的信息。

该属性是只读的。

提示: 要返回节点的元素节点集合(不包括文本和注释节点),请使用 children 属性。

提示: element.childNodes[0] 将产生与 firstChild 属性相同的结果。


浏览器支持

属性
childNodes Yes Yes Yes Yes Yes

语法

element.childNodes

技术细节

返回值: NodeList 对象,表示节点的集合。返回集合中的节点按其在源代码中的显示进行排序
DOM 版本 Core Level 1 Element Object

更多实例

实例

找出<div> 元素有多少子节点: out how many child nodes a element has:

var c = document.getElementById("myDIV").childNodes.length;
亲自试一试 »

实例

更改<div> 元素的第二个子节点(索引1)的背景色:

var c = document.getElementById("myDIV").childNodes;
c[1].style.backgroundColor = "yellow";
亲自试一试 »

实例

获取<select> 元素的第三个子节点(索引2)的文本:

var c = document.getElementById("mySelect").childNodes[2].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.lastChild 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


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