我如何改变一个'svg'元素的颜色?

2022 Web组件<load-file>回答

这个(8行)原生Web组件加载外部内容，并将其注入DOM。

在一篇DEV博客文章中对此进行了解释和记录:<load-file> Web Component。

完整的源代码:

customElements.define("load-file", class extends HTMLElement { // declare default connectedCallback as sync so await can be used async connectedCallback( // call connectedCallback with parameter to *replace* SVG (of <load-file> persists) src = this.getAttribute("src"), // attach a shadowRoot if none exists (prevents displaying error when moving Nodes) // declare as parameter to save 4 Bytes: 'let ' shadowRoot = this.shadowRoot || this.attachShadow({mode:"open"}) ) { // load SVG file from src="" async, parse to text, add to shadowRoot.innerHTML shadowRoot.innerHTML = await (await fetch(src)).text() // append optional <tag [shadowRoot]> Elements from inside <load-svg> after parsed <svg> shadowRoot.append(...this.querySelectorAll("[shadowRoot]")) // if "replaceWith" attribute // then replace <load-svg> with loaded content <load-svg> // childNodes instead of children to include #textNodes also this.hasAttribute("replaceWith") && this.replaceWith(...shadowRoot.childNodes) } }) <load-file src="//load-file.github.io/heart.svg">  <style shadowRoot> svg { height: 180px; /* Stack Overflow subwindow height */ } path:nth-child(2n+2) { fill: GREEN; /* shadowDOM style does NOT style global DOM */ } </style> </load-file>

2022-02-04 13:09:12

如果相同的SVG必须使用不同的颜色多次使用，可以在隐藏的SVG中定义路径集，作为主副本。然后放置指向主路径的新实例。

注意:此方法仅适用于内联<svg>标记。它将不能与<img>标签加载.svg文件。

:root { fill: gray; } .hidden { display: none; } svg { width: 1em; height: 1em; } <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg" class="hidden"> <path id="s_fave" d="m379 21c-57 0-104 53-123 78-19-25-66-78-123-78-74 0-133 68-133 151 0 45 18 88 49 116 0.5 0.8 1 2 2 2l197 197c2 2 5 3 8 3s5-1 8-3l206-206c2-2 3-3 5-5 0.8-0.8 1-2 2-3 23-28 35-64 35-102 0-83-60-151-133-151z"/> <path id="s_star" d="m511 196c-3-10-13-18-23-19l-148-13-58-137c-4-10-14-17-25-17-11 0-21 6-25 17l-58 137-148 13c-11 1-20 8-23 19-3 10-0.3 22 8 29l112 98-33 145c-2 11 2 22 11 28 5 3 10 5 16 5 5 0 10-1 14-4l127-76 127 76c9 6 21 5 30-1 9-6 13-17 11-28l-33-145 112-98c8-7 11-19 8-29z"/> </svg> <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><use href="#s_fave"></use></svg> <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><use href="#s_star"></use></svg> <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><use href="#s_fave" fill="red"></use></svg> <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><use href="#s_star" fill="gold"></use></svg> <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><use href="#s_fave" fill="purple"></use></svg> <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><use href="#s_star" fill="silver"></use></svg> <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><use href="#s_fave" fill="pink"></use></svg> <svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><use href="#s_star" fill="blue"></use></svg>

2022-01-16 11:13:40

你不应该直接在SVG图像上设置颜色，如果你想编程SVG的颜色。

在2021年，您可以使用以下CSS内容进行颜色更改。

html { --iron-icon-fill-color-1: green; --iron-icon-fill-color-2: red; --iron-icon-stroke-color: white; } svg#icon-green { fill: var(--iron-icon-fill-color-1, currentcolor); stroke: var(--iron-icon-stroke-color, none); } svg#icon-red { fill: var(--iron-icon-fill-color-2, currentcolor); stroke: var(--iron-icon-stroke-color, none); } svg#icon { fill: var(--iron-icon-fill-color-x, currentcolor); stroke: white; } <html> <body> <svg id="icon-green" xmlns="http://www.w3.org/2000/svg" width="40px" height="40px" style="vertical-align:text-bottom" viewbox="0 0 40 40"> <circle cx="20" cy="20" r="18" stroke-width="3"/> <path d="M 10,10 30,30 M 10,30 30,10" fill="none" stroke-width="6"/> </svg> <svg id="icon-red" xmlns="http://www.w3.org/2000/svg" width="40px" height="40px" style="vertical-align:text-bottom" viewbox="0 0 40 40"> <circle cx="20" cy="20" r="18" stroke-width="3"/> <path d="M 10,10 30,30 M 10,30 30,10" fill="none" stroke-width="6"/> </svg> <svg id="icon" xmlns="http://www.w3.org/2000/svg" width="40px" height="40px" style="vertical-align:text-bottom" viewbox="0 0 40 40"> <circle cx="20" cy="20" r="18" stroke-width="3"/> <path d="M 10,10 30,30 M 10,30 30,10" fill="none" stroke-width="6"/> </svg> </body> </html>

2021-06-29 22:32:48

你不能用这种方法改变图像的颜色。如果将SVG作为图像加载，则无法在浏览器中使用CSS或JavaScript更改它的显示方式。

如果你想改变你的SVG图像，你必须使用<object>， <iframe>或使用< SVG > inline加载它。

如果希望使用页面中的技术，则需要Modernizr库，在该库中可以检查SVG支持，并有条件地显示或不显示备用图像。然后可以内联SVG并应用所需的样式。

See:

#time-3-icon { fill: green; } .my-svg-alternate { display: none; } .no-svg .my-svg-alternate { display: block; width: 100px; height: 100px; background-image: url(image.png); } <svg width="96px" height="96px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve"> <path id="time-3-icon" d="M256,50C142.229,50,50,142.229,50,256c0,113.77,92.229,206,206,206c113.77,0,206-92.23,206-206 C462,142.229,369.77,50,256,50z M256,417c-88.977,0-161-72.008-161-161c0-88.979,72.008-161,161-161c88.977,0,161,72.007,161,161 C417,344.977,344.992,417,256,417z M382.816,265.785c1.711,0.297,2.961,1.781,2.961,3.518v0.093c0,1.72-1.223,3.188-2.914,3.505 c-37.093,6.938-124.97,21.35-134.613,21.35c-13.808,0-25-11.192-25-25c0-9.832,14.79-104.675,21.618-143.081 c0.274-1.542,1.615-2.669,3.181-2.669h0.008c1.709,0,3.164,1.243,3.431,2.932l18.933,119.904L382.816,265.785z"/> </svg> <image class="my-svg-alternate" width="96" height="96" src="ppngfallback.png" />

您可以内联SVG。用类名(my-svg-alternate)标记你的备份映像:

<svg width="96px" height="96px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve">
<path id="time-3-icon" .../>
</svg>

<image class="my-svg-alternate" width="96" height="96" src="ppngfallback.png" />

在CSS中使用Modernizr (CDN: http://ajax.aspnetcdn.com/ajax/modernizr/modernizr-2.7.2.js)的no-svg类来检查SVG支持。如果没有任何SVG支持，SVG块将被忽略，图像将被显示，否则图像将从DOM树中删除(display: none):

.my-svg-alternate {
  display: none;
}
.no-svg .my-svg-alternate {
  display: block;
  width: 100px;
  height: 100px;
  background-image: url(image.png);
}

然后你可以改变你的内联元素的颜色:

#time-3-icon {
   fill: green;
}

2014-03-07 14:39:04

2022 Web组件<load-file>回答

这个(8行)原生Web组件加载外部内容，并将其注入DOM。

在一篇DEV博客文章中对此进行了解释和记录:<load-file> Web Component。

完整的源代码:

customElements.define("load-file", class extends HTMLElement { // declare default connectedCallback as sync so await can be used async connectedCallback( // call connectedCallback with parameter to *replace* SVG (of <load-file> persists) src = this.getAttribute("src"), // attach a shadowRoot if none exists (prevents displaying error when moving Nodes) // declare as parameter to save 4 Bytes: 'let ' shadowRoot = this.shadowRoot || this.attachShadow({mode:"open"}) ) { // load SVG file from src="" async, parse to text, add to shadowRoot.innerHTML shadowRoot.innerHTML = await (await fetch(src)).text() // append optional <tag [shadowRoot]> Elements from inside <load-svg> after parsed <svg> shadowRoot.append(...this.querySelectorAll("[shadowRoot]")) // if "replaceWith" attribute // then replace <load-svg> with loaded content <load-svg> // childNodes instead of children to include #textNodes also this.hasAttribute("replaceWith") && this.replaceWith(...shadowRoot.childNodes) } }) <load-file src="//load-file.github.io/heart.svg">  <style shadowRoot> svg { height: 180px; /* Stack Overflow subwindow height */ } path:nth-child(2n+2) { fill: GREEN; /* shadowDOM style does NOT style global DOM */ } </style> </load-file>

2022-02-04 13:09:12

检查这段代码。它的工作原理。

<div>
   <!-- YouTube -->
   <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512">
       <path fill="white"
           d="M549.655 124.083c-6.281-23.65-24.787-42.276-48.284-48.597C458.781 64 288 64 288 64S117.22 64 74.629 75.486c-23.497 6.322-42.003 24.947-48.284 48.597-11.412 42.867-11.412 132.305-11.412 132.305s0 89.438 11.412 132.305c6.281 23.65 24.787 41.5 48.284 47.821C117.22 448 288 448 288 448s170.78 0 213.371-11.486c23.497-6.321 42.003-24.171 48.284-47.821 11.412-42.867 11.412-132.305 11.412-132.305s0-89.438-11.412-132.305zm-317.51 213.508V175.185l142.739 81.205-142.739 81.201z" />
   </svg>

   <!-- Instagram -->
   <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512">
       <path fill="white"
           d="M224.1 141c-63.6 0-114.9 51.3-114.9 114.9s51.3 114.9 114.9 114.9S339 319.5 339 255.9 287.7 141 224.1 141zm0 189.6c-41.1 0-74.7-33.5-74.7-74.7s33.5-74.7 74.7-74.7 74.7 33.5 74.7 74.7-33.6 74.7-74.7 74.7zm146.4-194.3c0 14.9-12 26.8-26.8 26.8-14.9 0-26.8-12-26.8-26.8s12-26.8 26.8-26.8 26.8 12 26.8 26.8zm76.1 27.2c-1.7-35.9-9.9-67.7-36.2-93.9-26.2-26.2-58-34.4-93.9-36.2-37-2.1-147.9-2.1-184.9 0-35.8 1.7-67.6 9.9-93.9 36.1s-34.4 58-36.2 93.9c-2.1 37-2.1 147.9 0 184.9 1.7 35.9 9.9 67.7 36.2 93.9s58 34.4 93.9 36.2c37 2.1 147.9 2.1 184.9 0 35.9-1.7 67.7-9.9 93.9-36.2 26.2-26.2 34.4-58 36.2-93.9 2.1-37 2.1-147.8 0-184.8zM398.8 388c-7.8 19.6-22.9 34.7-42.6 42.6-29.5 11.7-99.5 9-132.1 9s-102.7 2.6-132.1-9c-19.6-7.8-34.7-22.9-42.6-42.6-11.7-29.5-9-99.5-9-132.1s-2.6-102.7 9-132.1c7.8-19.6 22.9-34.7 42.6-42.6 29.5-11.7 99.5-9 132.1-9s102.7-2.6 132.1 9c19.6 7.8 34.7 22.9 42.6 42.6 11.7 29.5 9 99.5 9 132.1s2.7 102.7-9 132.1z" />
   </svg>
</div>

CSS

svg {
   fill: white;
}

2022-11-19 09:51:59

我如何改变一个'svg'元素的颜色?

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