<switch>

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>

<switch> SVG element evaluates any requiredFeatures , requiredExtensions and systemLanguage attributes on its direct child elements in order, and then renders the first child where these attributes evaluate to true.

Other direct children will be bypassed and therefore not rendered. If a child element is a container element, like <g> , then its subtree is also processed/rendered or bypassed/not rendered.

注意： display and visibility properties have no effect on <switch> element processing. In particular, setting display:none on a child has no effect on the true/false testing for <switch> processing.

Usage context

属性

全局属性

• Conditional processing attributes
• Core attributes
• Graphical event attributes
• Presentation attributes
• class
• style
• transform

DOM Interface

This element implements the SVGSwitchElement 接口。

SVG <switch> example

This example demonstrates showing different text content depending on the browser's language settings. The switch element will display the first of its child elements whose  systemLanguage attribute matches the user's language, or the fallback element with no systemLanguage attribute if none of them match.

HTML 内容

<svg viewBox="0 -20 100 50">



<

switch


>





<

text


systemLanguage



=


"

ar

"



>


مرحبا



</

text


>





<

text


systemLanguage



=


"

de,nl

"



>


Hallo!



</

text


>





<

text


systemLanguage



=


"

en-us

"



>


Howdy!



</

text


>





<

text


systemLanguage



=


"

en-gb

"



>


Wotcha!



</

text


>





<

text


systemLanguage



=


"

en-au

"



>


G'day!



</

text


>





<

text


systemLanguage



=


"

en

"



>


Hello!



</

text


>





<

text


systemLanguage



=


"

es

"



>


Hola!



</

text


>





<

text


systemLanguage



=


"

fr

"



>


Bonjour!



</

text


>





<

text


systemLanguage



=


"

ja

"



>


こんにちは



</

text


>





<

text


systemLanguage



=


"

ru

"



>


Привет!



</

text


>





<

text


>


☺



</

text


>





</

switch


>





</

svg


>



								

结果

规范

浏览器兼容性

BCD tables only load in the browser

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最后修改： Sep 23, 2021 , 由 MDN 贡献者