内容表

• 范例
• 用法注意事项
• 规范
• 浏览器兼容性

stdDeviation

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>

stdDeviation attribute defines the standard deviation for the blur operation.

You can use this attribute with the following SVG elements:

• <feGaussianBlur>

范例

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

					

<svg viewBox="0 0 480 200" xmlns="http://www.w3.org/2000/svg">
  <filter id="gaussianBlur1">
    <feGaussianBlur stdDeviation="1" />
  </filter>
  <filter id="gaussianBlur2">
    <feGaussianBlur stdDeviation="5" />
  </filter>
  <filter id="gaussianBlur3" x="-30%" y="-30%" width="160%" height="160%">
    <feGaussianBlur stdDeviation="10" />
  </filter>
  <circle cx="100" cy="100" r="50" style="filter: url(#gaussianBlur1);" />
  <circle cx="100" cy="100" r="50" style="filter: url(#gaussianBlur2); transform: translateX(140px);" />
  <circle cx="100" cy="100" r="50" style="filter: url(#gaussianBlur3); transform: translateX(280px);" />
</svg>

					

用法注意事项

值	<number-optional-number>
默认值	0
Animatable	Yes

<number-optional-number>

If two numbers are provided, the first number represents a standard deviation value along the x-axis. The second value represents a standard deviation along the y-axis. If one number is provided, then that value is used for both X and Y.

A negative value is forbidden. A value of zero disables the effect of the given filter primitive (i.e., the result is the filter input image). If stdDeviation is 0 in only one of X or Y, then the effect is that the blur is only applied in the direction that has a non-zero value.

规范

规范	状态	注释
Filter Effects Module Level 1 The definition of 'stdDeviation' in that specification.	工作草案	无变化
Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'stdDeviation' in that specification.	推荐	初始定义

浏览器兼容性

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最后修改： Sep 23, 2021 , 由 MDN 贡献者