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


Style borderWidth 属性

❮ Style 对象

实例

更改 <div> 元素的四个边框的宽度:

document.getElementById("myDiv").style.borderWidth = "thick";
亲自试一试 »

定义和用法

borderWidth 属性设置或返回元素边框的宽度。

该属性可使用 1 到 4 种宽度:

  • 如果规定一种宽度,比如:p {border-width: thick} - 所有四个边框都是粗线。
  • 如果规定两种宽度,比如:p {border-width: thick thin} - 上边框和下边框是粗线,而左边框和右边框是细线。
  • 如果规定三种宽度,比如:p {border-width: thick thin medium} - 上边框是粗线,左边框和右边框是细线,下边框是中等的线。
  • 如果规定四种宽度,比如:p {border-width: thick thin medium 10px} - 上边框是粗线,右边框是细线,下边框是中等的线,左边框是 10px 的宽度。

浏览器支持

属性
borderWidth Yes Yes Yes Yes Yes

语法

返回 borderWidth 属性:

object.style.borderWidth

设置 borderWidth 属性:

object.style.borderWidth = "thin|medium|thick|length|initial|inherit"

属性值

描述
thin 定义细的边框。
medium 默认。定义中等的边框。
thick 定义粗的边框。
length 使用 px、cm 等长度单位定义边框的宽度。
initial 设置该属性为它的默认值。请参阅 initial
inherit 从父元素继承该属性。请参阅 inherit


技术细节

默认值: medium 
返回值: 一个字符串,表示元素边框的宽度
CSS 版本 CSS1

更多实例

实例

将<div>元素的顶部和底部边框的宽度更改为 thick ,将左侧和右侧边框的宽度更改为 thin:

document.getElementById("myDiv").style.borderWidth = "thick thin";
亲自试一试 »

实例

使用 length 值更改 <div> 元素四个边框的宽度:

document.getElementById("myDiv").style.borderWidth = "1px 5px 10px 20px";
亲自试一试 »

实例

返回 <div> 元素的边框宽度:

alert(document.getElementById("myDiv").style.borderWidth);
亲自试一试 »

相关页面

CSS 教程: CSS Border

CSS 参考手册: border-width 属性

HTML DOM 参考手册: border 属性


❮ Style 对象