内容表

• 范例
• 属性
• 用法注意事项
• 规范
• 浏览器兼容性
• 另请参阅

<circle>

1. SVG 元素

   1. A
      1. <a>
      2. <altGlyph>
      3. <altGlyphDef>
      4. <altGlyphItem>
      5. <animate>
      6. <animateColor>
      7. <animateMotion>
      8. <animateTransform>
   2. B-C
      1. <circle>
      2. <clipPath>
      3. <color-profile>
      4. <cursor>
   3. D
      1. <defs>
      2. <desc>
   4. E
      1. <ellipse>
   5. F
      1. <feBlend>
      2. <feColorMatrix>
      3. <feComponentTransfer>
      4. <feComposite>
      5. <feConvolveMatrix>
      6. <feDiffuseLighting>
      7. <feDisplacementMap>
      8. <feDistantLight>
      9. <feFlood>
      10. <feFuncA>
      11. <feFuncB>
      12. <feFuncG>
      13. <feFuncR>
      14. <feGaussianBlur>
      15. <feImage>
      16. <feMerge>
      17. <feMergeNode>
      18. <feMorphology>
      19. <feOffset>
      20. <fePointLight>
      21. <feSpecularLighting>
      22. <feSpotLight>
      23. <feTile>
      24. <feTurbulence>
      25. <filter>
      26. <font>
      27. <font-face>
      28. <font-face-format>
      29. <font-face-name>
      30. <font-face-src>
      31. <font-face-uri>
      32. <foreignObject>
   6. G
      1. <g>
      2. <glyph>
      3. <glyphRef>
   7. H
      1. <hkern>
   8. I
      1. <image>
   9. J-L
      1. <line>
      2. <linearGradient>
   10. M
       1. <marker>
       2. <mask>
       3. <metadata>
       4. <missing-glyph>
       5. <mpath>
   11. N-P
       1. <path>
       2. <pattern>
       3. <polygon>
       4. <polyline>
   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
       1. <text>
       2. <textPath>
       3. <title>
       4. <tref>
       5. <tspan>
   15. U
       1. <use>
   16. V-Z
       1. <view>
       2. <vkern>

<circle> SVG element is an SVG basic shape , used to draw circles based on a center point and a radius.

范例

html,body,svg { height:100% }

					

<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
  <circle cx="50" cy="50" r="50"/>
</svg>

					

属性

cx

The x-axis coordinate of the center of the circle. Value type : <length> | <percentage> ; 默认值 : 0 ; Animatable : yes

cy

The y-axis coordinate of the center of the circle. Value type :  <length> | <percentage> ; 默认值 : 0 ; Animatable : yes

r

The radius of the circle. A value lower or equal to zero disables rendering of the circle. Value type : <length> ; 默认值 : 0 ; Animatable : yes

pathLength

The total length for the circle's circumference, in user units. Value type : <number> ; 默认值 : none ; Animatable : yes

注意： Starting with SVG2, cx , cy ，和 r are Geometry Properties , meaning those attributes can also be used as CSS properties for that element.

全局属性

Core Attributes

Most notably: id , tabindex

Styling Attributes

class , style

Conditional Processing Attributes

Most notably: requiredExtensions , systemLanguage

Event Attributes

Global event attributes , Graphical event attributes

Presentation Attributes

Most notably: clip-path , clip-rule , color , color-interpolation , color-rendering , cursor , display , fill , fill-opacity , fill-rule , filter , mask , opacity , pointer-events , shape-rendering , stroke , stroke-dasharray , stroke-dashoffset , stroke-linecap , stroke-linejoin , stroke-miterlimit , stroke-opacity , stroke-width , transform , vector-effect , visibility

ARIA Attributes

aria-activedescendant , aria-atomic , aria-autocomplete , aria-busy , aria-checked , aria-colcount , aria-colindex , aria-colspan , aria-controls , aria-current , aria-describedby , aria-details , aria-disabled , aria-dropeffect , aria-errormessage , aria-expanded , aria-flowto , aria-grabbed , aria-haspopup , aria-hidden , aria-invalid , aria-keyshortcuts , aria-label , aria-labelledby , aria-level , aria-live , aria-modal , aria-multiline , aria-multiselectable , aria-orientation , aria-owns , aria-placeholder , aria-posinset , aria-pressed , aria-readonly , aria-relevant , aria-required , aria-roledescription , aria-rowcount , aria-rowindex , aria-rowspan , aria-selected , aria-setsize , aria-sort , aria-valuemax , aria-valuemin , aria-valuenow , aria-valuetext , role

用法注意事项

类别	Basic shape element, Graphics element, Shape element
准许内容	Any number of the following elements, in any order: Animation elements Descriptive elements

规范

规范
Scalable Vector Graphics (SVG) 1.1 (Second Edition) (SVG) # CircleElement

浏览器兼容性

BCD tables only load in the browser

另请参阅

• Other SVG basic shapes: <ellipse> , <line> , <polygon> , <polyline> , <rect>

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最后修改： Sep 23, 2021 , 由 MDN 贡献者