我正在尝试找到一种方法，根据路径元素(id =“path”>路径)的整个轨迹的百分比，使用jQuery在SVG中移动组(id =“avatar”)，在SVG。
因此，使用“transform->translate”动态设置头像到正确的位置，例如轨迹的 20%。所以输入的是20，那么它应该设置在#path>path路径的20%上。
我找不到任何类型的函数或解析机制来实现此目标。
有什么建议吗？
SVG 在浏览器中作为整个 SVG html5 元素及其所有嵌套的 SVG 标签使用。所以不要像 img->src 那样加载。
SVG 图像:
SVG 代码:
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
viewBox="0 0 1000 600" xml:space="preserve">
<style type="text/css">
.st5{fill:#43A592;stroke:#8C6239;stroke-width:0.5;stroke-miterlimit:10;}
.st6{fill:none;stroke:#603813;stroke-width:8;stroke-linecap:square;stroke-miterlimit:10;}
.st7{fill:none;stroke:#603813;stroke-width:8;stroke-linecap:square;stroke-miterlimit:10;stroke-dasharray:5.0414,12.0993;}
.st8{fill:#405813;}
.st9{fill:#7FBFD6;}
</style>
<g id="path">
<path class="st7" d="M253.83,291.92C438.6,278.28,338.5,457,422.2,429.99c87.72-28.31-71.17-110.68,22.64-190.57
c54.07-46.05,161.79-22.03,138.18,79.89c-13.69,59.11-53.79,87.21-30.99,132.4c0,0,20.26,23.49,61.35,18.96"/>
</g>
<g id="avatar" transform="translate(10,20)">
<g>
<g>
<circle class="st9" cx="276.22" cy="290.06" r="26.83"/>
<path class="st8" d="M276.22,317.69c-15.23,0-27.62-12.39-27.62-27.62s12.39-27.62,27.62-27.62s27.62,12.39,27.62,27.62
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s26.03-11.68,26.03-26.03S290.57,264.04,276.22,264.04z"/>
</g>
<g>
<g>
<path class="st16" d="M264.95,293.51c-0.35-0.11-0.74,0.03-0.93,0.35l-4.62,7.56c-0.35,0.58,0.02,1.33,0.7,1.39
c3.16,0.29,11.31,1.43,23.76,5.78c0.44,0.15,0.86-0.3,0.65-0.73C283.15,305.1,278.44,297.84,264.95,293.51z"/>
</g>
<g>
<path class="st16" d="M284.68,279.17c-2.01-6.83-8.8-10.85-15.17-8.97c-0.04,0.01-0.09,0.03-0.13,0.04
c-0.06-0.01-0.13-0.01-0.19-0.02c-0.07,0.05-0.13,0.09-0.19,0.14c-6.04,2.09-9.34,8.94-7.39,15.59c0,0-0.76,2.95-2.22,5.82
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</g>
<g>
<path class="st8" d="M296.91,298.57c-0.04-0.3-0.29-0.52-0.59-0.52h-3.56c-0.33,0-0.6,0.27-0.6,0.6c0,1.34-0.33,1.94-0.6,2.2
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</g>
</g>
</g>
</g>
</svg>
最佳答案
为了获取路径上某个点的位置，您需要使用 path.getPointAtLength .
这是我所做的:
我已将头像移至 <defs>元素，以便我稍后可以使用它。
此外，我还翻译了 svg Canvas 起源中头像中的所有内容。
<use>元素可以获得 x 和 y 属性，以便能够在 svg Canvas 上定位所使用的元素。在 Javascript 中，我使用 path.getPointAtLength 计算头像的 x 和 y方法。
在此演示中，输入类型范围会更改头像在路径上的位置；
在您的代码中，您有 transform头像的属性。我将此转换用于 use 元素。
另外:对于演示，我更改了 viewBox 的值svg 元素的属性。您可以将其改回您想要的值。
let pathlength = path.getTotalLength();
let pos = path.getPointAtLength(0);
theUse.setAttributeNS(null,"x", pos.x);
theUse.setAttributeNS(null,"y", pos.y);
theRange.addEventListener("input", ()=>{
let perc = parseInt(theRange.value);
let leng = pathlength * perc/100;
pos = path.getPointAtLength(leng);
theUse.setAttributeNS(null,"x", pos.x);
theUse.setAttributeNS(null,"y", pos.y);
})svg{border:1px solid;overflow:visible; width:95vh; display:block; margin:1em auto;}<input type="range" id="theRange" value="0"/>
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
viewBox="230 200 400 300" xml:space="preserve">
<style type="text/css">
.st5{fill:#43A592;stroke:#8C6239;stroke-width:0.5;stroke-miterlimit:10;}
.st6{fill:none;stroke:#603813;stroke-width:8;stroke-linecap:square;stroke-miterlimit:10;}
.st7{fill:none;stroke:#603813;stroke-width:8;stroke-linecap:square;stroke-miterlimit:10;stroke-dasharray:5.0414,12.0993;}
.st8{fill:#405813;}
.st9{fill:#7FBFD6;}
</style>
<defs>
<g id="avatar" transform="translate(-276.22, -290.06)">
<g>
<g>
<circle class="st9" cx="276.22" cy="290.06" r="26.83"/>
<path class="st8" d="M276.22,317.69c-15.23,0-27.62-12.39-27.62-27.62s12.39-27.62,27.62-27.62s27.62,12.39,27.62,27.62
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s26.03-11.68,26.03-26.03S290.57,264.04,276.22,264.04z"/>
</g>
<g>
<g>
<path class="st16" d="M264.95,293.51c-0.35-0.11-0.74,0.03-0.93,0.35l-4.62,7.56c-0.35,0.58,0.02,1.33,0.7,1.39
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</g>
<g>
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<g>
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</g>
</g>
</g>
</g>
</defs>
<g>
<path class="st7" id="path" d="M253.83,291.92C438.6,278.28,338.5,457,422.2,429.99c87.72-28.31-71.17-110.68,22.64-190.57
c54.07-46.05,161.79-22.03,138.18,79.89c-13.69,59.11-53.79,87.21-30.99,132.4c0,0,20.26,23.49,61.35,18.96"/>
</g>
<use id="theUse" transform="translate(0,20)" xlink:href="#avatar" />
</svg>关于javascript - 根据整个路径轨迹的百分比在路径轨迹上移动 SVG 组，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54784003/