<desc>

<desc>
<metadata>
<title>
SVG 元素
1. A
2. B-C
3. D
  1. <defs>
  2. <desc>
4. E
  1. <ellipse>
5. F
6. G
7. H
  1. <hkern>
8. I
  1. <image>
9. J-L
  1. <line>
  2. <linearGradient>
10. M
11. N-P
12. Q-R
  1. <radialGradient>
  2. <rect>
13. S
  1. <script>
  2. <set>
  3. <stop>
  4. <style>
  5. <svg>
  6. <switch>
  7. <symbol>
14. T
15. U
  1. <use>
16. V-Z
  1. <view>
  2. <vkern>

<desc> element provides an accessible, long-text description of any SVG container element or graphics element .

Text in a <desc> element is not rendered as part of the graphic. If the element can be described by visible text, it is possible to reference that text with the aria-describedby attribute. If aria-describedby is used, it will take precedence over <desc> .

The hidden text of a <desc> element can also be concatenated with the visible text of other elements using multiple IDs in an aria-describedby value. In that case, the <desc> element must provide an ID for reference.

范例

html,body,svg { height:100% }

<svg viewBox="0 0 10 10" xmlns="http://www.w3.org/2000/svg">
  <circle cx="5" cy="5" r="4">
    <desc>
      I'm a circle and that description is here to
      demonstrate how I can be described, but is it
      really necessary to describe a simple circle
      like me?
    </desc>
  </circle>
</svg>