将 svg 文档的所有直接子文档包装到中是否安全？用于缩放？
在我的应用程序中，我加载不同的 SVG 文件并需要缩放它们。正如我所见，我需要将变换矩阵应用于元素以使其缩放，但这不适用于 SVG 元素，因此我需要将所有内容包装在
所以我的问题是这样做安全吗？是否允许像 的直接子元素？在这种情况下，最外层
In my app I load different SVG files and need to zoom them. As I see it I need to apply a transformation matrix to an element to have it zoomed, but this doesn't work on SVG element, so I need to wrap everything in a <g> and transform it instead.
So my question is is it safe to do this? Is it allowed for elements like <defs> be not immediate children of <svg>? Will the transformation on outermost <g> affect the elements inside <defs> in this case? What other issues may arise if I wrap everything in a <g>?
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是的，您可以在任何需要的地方使用
，因此大多数时候位于何处并不重要放置了。如果包含的 SVG 片段具有选择根元素或 svg 元素子元素的 css 样式规则，您可能会遇到问题。
Yes you can use
<defs>wherever you need it, although it's advisable to keep it as a direct child of the root element. Ask yourself if you really need to inherit style into the<defs>content. Usually the content inside<defs>is referenced by other elements, e.g<use>, so most of the time it doesn't really matter where the<defs>is placed.The transformation on the
<g>element won't affect a child<defs>directly, since the transform isn't inherited. However it may affect the return values from some SVG DOM calls, but in general if you're asking for details on elements inside a<defs>you need to be careful anyway since more context is usually needed to properly compute the result, e.g percentages and objectBoundingBox units depend on the viewport and referencing element respectively.You may run into issues if the included SVG fragment has css stylerules that select e.g the root element, or the children of an svg element.