<marker>

1. <a>
2. <defs>
3. <g>
4. <marker>
5. <mask>
6. <missing-glyph>
7. <pattern>
8. <svg>
9. <switch>
10. <symbol>
11. 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>

<marker> element defines the graphic that is to be used for drawing arrowheads or polymarkers on a given <path> , <line> , <polyline> or <polygon> 元素。

Markers are attached to shapes using the marker-start , marker-mid ，和 marker-end 特性。

范例

html,body,svg { height:100% }

								

<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <!-- arrowhead marker definition -->
    <marker id="arrow" viewBox="0 0 10 10" refX="5" refY="5"
        markerWidth="6" markerHeight="6"
        orient="auto-start-reverse">
      <path d="M 0 0 L 10 5 L 0 10 z" />
    </marker>
    <!-- simple dot marker definition -->
    <marker id="dot" viewBox="0 0 10 10" refX="5" refY="5"
        markerWidth="5" markerHeight="5">
      <circle cx="5" cy="5" r="5" fill="red" />
    </marker>
  </defs>
  <!-- Coordinate axes with a arrowhead in both direction -->
  <polyline points="10,10 10,90 90,90" fill="none" stroke="black"
   marker-start="url(#arrow)" marker-end="url(#arrow)"  />
  <!-- Data line with polymarkers -->
  <polyline points="15,80 29,50 43,60 57,30 71,40 85,15" fill="none" stroke="grey"
   marker-start="url(#dot)" marker-mid="url(#dot)"  marker-end="url(#dot)" />
</svg>

								

属性

markerHeight

This attribute defines the height of the marker viewport. Value type : <length> ; 默认值 : 3 ; Animatable : yes

markerUnits

This attribute defines the coordinate system for the attributes markerWidth , markerHeight and the contents of the <marker> . Value type :  userSpaceOnUse | strokeWidth ; 默认值 : strokeWidth ; Animatable : yes

markerWidth

This attribute defines the width of the marker viewport. Value type : <length> ; 默认值 : 3 ; Animatable : yes

orient

This attribute defines the orientation of the marker relative to the shape it is attached to. Value type : auto | auto-start-reverse | <angle> ; 默认值 : 0 ; Animatable : yes

preserveAspectRatio

This attribute defines how the svg fragment must be deformed if it is embedded in a container with a different aspect ratio. Value type : ( none | xMinYMin | xMidYMin | xMaxYMin | xMinYMid | xMidYMid | xMaxYMid | xMinYMax | xMidYMax | xMaxYMax ) ( meet | slice )? ; 默认值 : xMidYMid meet ; Animatable : yes

refX

This attribute defines the x coordinate for the reference point of the marker. Value type : left | center | right | <coordinate> ; 默认值 : 0 ; Animatable : yes

refY

This attribute defines the y coordinate for the reference point of the marker. Value type : top | center | bottom | <coordinate> ; 默认值 : 0 ; Animatable : yes

viewBox

This attribute defines the bound of the SVG viewport for the current SVG fragment. Value type : <list-of-numbers> ; 默认值 : none; Animatable : yes

全局属性

Core Attributes

Most notably: id , tabindex

Styling Attributes

class , style

Conditional Processing Attributes

Most notably: requiredExtensions , systemLanguage

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

规范

浏览器兼容性

BCD tables only load in the browser

另请参阅

• Related marker properties: marker-start , marker-mid ，和 marker-end

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最后修改： Sep 23, 2021 , 由 MDN 贡献者