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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>

Style backgroundPosition 属性


实例

更改背景图像的位置:

document.body.style.backgroundPosition = "top right";
亲自试一试 »

页面下方有更多实例。


定义和用法

backgroundPosition 属性设置或返回元素中背景图像的位置。


浏览器支持

表中的数字表示支持该属性的第一个浏览器版本。

属性
backgroundPosition 1.0 4.0 1.0 1.0 3.5

语法

返回 backgroundPosition 属性:

object.style.backgroundPosition

设置 backgroundPosition 属性:

object.style.backgroundPosition = value

属性值

描述
top left
top center
top right
center left
center center
center right
bottom left
bottom center
bottom right
如果仅指定一个关键字,其他值将是 "center".
x% y% x 值表示水平位置,y 值表示垂直位置。左上角是 0% 0%。右下角是 100% 100%。如果仅指定一个值,其他值将是 50%。
xpos ypos x 值表示水平位置,y 值表示垂直位置。左上角是 0 0。单位可以是像素(0px 0px)或任何其他的 CSS 单位。如果仅指定一个值,其他值将是 50%。您可以混合使用 % 和单位。
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: 0% 0%
返回值: 一个字符串,表示背景图像的位置
CSS 版本 CSS1

更多实例

实例

将<div> 元素中背景图像的位置更改为中底:

document.getElementById("myDiv").style.backgroundPosition = "center bottom";
亲自试一试 »

实例

将 div 元素中背景图像的位置更改为水平200px和垂直40px:

document.getElementById("myDiv").style.backgroundPosition = "200px 40px";
亲自试一试 »

实例

返回背景图像在 div 元素中的位置:

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

相关页面

CSS 教程: CSS Background

CSS 参考手册: background-image 属性

CSS 参考手册: background-position 属性

HTML DOM 参考手册: background 属性


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