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JS 参考

按类别分类的 JS 按字母顺序排列的 JS

JavaScript

JS 数组 JS 布尔值 JS 类 JS 日期 JS 错误 JS 全局 JS JSON JS 映射 JS 数学 JS 数字 JS 对象 JS 运算符 JS 优先级 JS Promises JS 正则表达式 JS 集合 JS 语句 JS 字符串 JS TypedArray

窗口

窗口对象 窗口控制台 窗口历史记录 窗口位置 窗口导航器 窗口屏幕

HTML DOM

HTML 文档 HTML 元素 HTML 属性 HTML 集合 HTML 节点列表 HTML DOMTokenList HTML 样式
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 事件

HTML 事件 HTML 事件对象 HTML 事件属性 HTML 事件方法

Web API

API Canvas API Console API Fetch API 全屏 API 地理位置 API 历史记录 API 媒体查询列表 API 存储 API 验证 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> <style> <sub> <summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

其他参考

CSSStyleDeclaration JS 转换


Canvas fillStyle 属性

❮ Canvas 参考

示例

为矩形定义红色填充颜色

您的浏览器不支持 canvas 标签。

JavaScript

const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");

ctx.fillStyle = "red";
ctx.fillRect(20, 20, 150, 100);
尝试一下 »

更多示例如下。


描述

The fillStyle 属性设置或返回用于填充绘图的颜色、渐变或图案。

默认值为 #000000(纯黑色)。

另请参阅

strokeStyle 属性(设置描边颜色/样式)

fillRect() 方法(绘制填充矩形)

rect() 方法(绘制未填充的矩形)


语法

context.fillStyle = color|gradient|pattern

属性值

描述 运行它
color 一个 CSS 颜色值,指示绘图的填充颜色。默认值为 #000000 运行它 »
gradient 用于填充绘图的渐变对象 (linearradial)  
pattern 用于填充绘图的 pattern 对象  


更多示例

示例

将渐变(从上到下)定义为矩形的填充样式

您的浏览器不支持 canvas 标签。

JavaScript

const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");
const my_gradient = ctx.createLinearGradient(0, 0, 0, 170);
my_gradient.addColorStop(0, "black");
my_gradient.addColorStop(1, "white");
ctx.fillStyle = my_gradient;
ctx.fillRect(20, 20, 150, 100);
尝试一下 »

示例

将渐变(从左到右)定义为矩形的填充样式

您的浏览器不支持 canvas 标签。

JavaScript

const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");
const my_gradient = ctx.createLinearGradient(0, 0, 170, 0);
my_gradient.addColorStop(0, "black");
my_gradient.addColorStop(1, "white");
ctx.fillStyle = my_gradient;
ctx.fillRect(20, 20, 150, 100);
尝试一下 »

示例

定义一个从黑色到红色到白色的渐变,作为矩形的填充样式

您的浏览器不支持 canvas 标签。

JavaScript

const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");
const var my_gradient = ctx.createLinearGradient(0, 0, 170, 0);
my_gradient.addColorStop(0, "black");
my_gradient.addColorStop(0.5, "red");
my_gradient.addColorStop(1, "white");
ctx.fillStyle = my_gradient;
ctx.fillRect(20, 20, 150, 100);
尝试一下 »

要使用的图像

Lamp

示例

使用图像填充绘图

您的浏览器不支持 HTML5 canvas 标签。

JavaScript

const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");
const img = document.getElementById("lamp");
const pat = ctx.createPattern(img, "repeat");
ctx.rect(0, 0, 150, 100);
ctx.fillStyle = pat;
ctx.fill();
尝试一下 »

浏览器支持

The <canvas> 元素是 HTML5 标准 (2014)。

fillStyle() 在所有现代浏览器中都受支持

Chrome Edge Firefox Safari Opera IE
9-11

❮ Canvas 参考

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