SVGFESpotLightElement: specularExponent property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The specularExponent read-only property of the SVGFESpotLightElement interface reflects the specularExponent attribute of the given <feSpotLight> element.

Value

Examples

Accessing the specularExponent attribute of the <feSpotLight> element

In this example, we access the exponent value controlling the focus of the <feSpotLight> filter element's light source by using the specularExponent read-only property of the SVGFESpotLightElement interface.

html
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <filter id="specularLightingFilter">
      <!-- Apply a specular light effect to the SourceGraphic -->
      <feSpecularLighting
        in="SourceGraphic"
        specularExponent="40"
        lighting-color="hotpink"
        surfaceScale="5">
        <feSpotLight
          x="100"
          y="100"
          z="50"
          pointsAtX="100"
          pointsAtY="100"
          specularExponent="40" />
      </feSpecularLighting>
    </filter>
  </defs>
  <circle
    cx="100"
    cy="100"
    r="50"
    style="fill:lightblue;"
    filter="url(#specularLightingFilter)" />
</svg>
js
// Select the feSpotLight element
const spotLightElement = document.querySelector("feSpotLight");

// Access the specularExponent property
console.log(spotLightElement.specularExponent.baseVal); // Output: 40

Specifications

Specification
Filter Effects Module Level 1
# dom-svgfespotlightelement-specularexponent

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
specularExponent

Legend

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Full support
Full support

See also