overflow

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>

overflow attribute sets what to do when an element's content is too big to fit in its block formatting context. This feature is not widely implemented yet .

This attribute has the same parameter values and meaning as the css overflow property , however, the following additional points apply:

• If it has a value of visible , the attribute has no effect (i.e., a clipping rectangle is not created).
• 若 overflow property has the value hidden or scroll , a clip of the exact size of the SVG viewport is applied.
• 当 scroll is specified on an <svg> element, a scrollbar or panner is normally shown for the SVG viewport whether or not any of its content is clipped.
• Within SVG content, the value auto implies that all rendered content for child elements must be visible, either through a scrolling mechanism, or by rendering with no clip.

注意： Although the initial value for overflow is auto , it is overwritten in the User Agent style sheet for the <svg> element when it is not the root element of a stand-alone document, the <pattern> element, and the <marker> element to be hidden by default.

注意： As a presentation attribute, overflow can be used as a CSS property. See the css opacity property for more information.

You can use this attribute with the following SVG elements:

• <foreignObject>
• <iframe>
• <image>
• <marker>
• <pattern>
• <symbol>
• <svg>
• <text>

范例

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

								

<svg viewBox="0 0 200 30" xmlns="http://www.w3.org/2000/svg" overflow="auto">
  <text y="20">This text is wider than the SVG, so there should be a scrollbar shown.</text>
</svg>

								

用法注意事项

For a description of the values, please see the css overflow 特性。

规范

浏览器兼容性

BCD tables only load in the browser

另请参阅

• css overflow

Found a problem with this page?

• Edit on GitHub
• Source on GitHub
• Report a problem with this content on GitHub
• Want to fix the problem yourself? See our Contribution guide .

最后修改： Sep 23, 2021 , 由 MDN 贡献者