<use>

The following example shows how to use the use element to draw a circle with a different fill and stroke color. In the last circle, stroke="red" will be ignored because stroke was already set on myCircle.

html,
body,
svg {
  height: 100%;
}

<svg viewBox="0 0 30 10" xmlns="http://www.w3.org/2000/svg">
  <circle id="myCircle" cx="5" cy="5" r="4" stroke="blue" />
  <use href="#myCircle" x="10" fill="blue" />
  <use href="#myCircle" x="20" fill="white" stroke="red" />
</svg>

href

The URL to an element/fragment that needs to be duplicated. See Usage notes for details on common pitfalls.
Value type: <URL> ; Default value: none; Animatable: yes

xlink:href Deprecated

An <IRI> reference to an element/fragment that needs to be duplicated. If both href and xlink:href are present, the value given by href is used.
Value type: <IRI> ; Default value: none; Animatable: yes

x

The x coordinate of an additional final offset transformation applied to the <use> element.
Value type: <coordinate> ; Default value: 0; Animatable: yes

y

The y coordinate of an additional final offset transformation applied to the <use> element.
Value type: <coordinate> ; Default value: 0; Animatable: yes

width

The width of the use element.
Value type: <length> ; Default value: 0; Animatable: yes

height

The height of the use element.
Value type: <length> ; Default value: 0; Animatable: yes

Most attributes on use are ignored if the corresponding attribute is already defined on the element referenced by use. (This differs from how CSS style attributes override those set 'earlier' in the cascade). Only the attributes x, y, width, height and href on the use element will or may have some effect, described later, if the referenced element has already defined the corresponding attribute. However, any other attributes not set on the referenced element will be applied to the use element.

Since the cloned nodes are not exposed, care must be taken when using CSS to style a use element and its cloned descendants. CSS properties are not guaranteed to be inherited by the cloned DOM unless you explicitly request them using CSS inheritance.

For security reasons, browsers may apply the same-origin policy on use elements and may refuse to load a cross-origin URL in the href attribute. There is currently no defined way to set a cross-origin policy for use elements.