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 nodeValue 属性

❮ Element 对象

实例

获取文档中第一个 <button> 元素的节点值:

var x = document.getElementsByTagName("BUTTON")[0].childNodes[0].nodeValue;
亲自试一试 »

页面下方有更多实例。


定义和用法

nodeValue 性设置或返回指定节点的节点值。

如果节点是元素节点,nodeValue 属性将返回 null

注释: 如果要返回元素的文本,请记住文本始终位于文本节点内,并且必须返回文本节点的节点值 (element.childNodes[0].nodeValue)。

对于其他节点类型,nodeValue属性将为不同的节点类型返回不同的值。

提示: nodeValue 属性的另一种替代方法可以是 textContent 属性。


浏览器支持

属性
nodeValue Yes Yes Yes Yes Yes

语法

返回节点值:

node.nodeValue

设置节点值:

node.nodeValue = value

属性值

描述
value  指定节点的节点值


技术细节

返回值: 一个字符串,表示节点的值。

可能值:

  • 元素节点和文档节点返回 null
  • 返回属性节点的属性值
  • 返回文本节点的内容
  • 返回注释节点的内容
DOM 版本 Core Level 1 Node Object

更多实例

实例

获取 <div> 元素的第一个子节点的节点名、节点值和节点类型:

<div id="myDIV">This is a div element.</div>

<script>
var x = document.getElementById("myDIV").firstChild;
var txt = "";
txt += "The node name: " + x.nodeName + "<br>";
txt += "The node value: " + x.nodeValue + "<br>";
txt += "The node type: " + x.nodeType;
</script>
亲自试一试 »

相关页面

HTML DOM 参考手册: node.nodeName 属性

HTML DOM 参考手册: node.nodeType 属性

HTML DOM 参考手册: node.nodeValue 属性

HTML DOM 参考手册: node.childNodes 属性


❮ Element 对象