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Using classList on SVG Elements

The classList API works on SVG elements in modern browsers, enabling clean class-based styling and state toggling.

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VTracer vectorization + SVGO optimizationPrivacy protected

Managing SVG Classes with classList

Modern browsers support the standard classList API (add, remove, toggle, contains) on SVG elements just as on HTML elements, letting you cleanly manage CSS classes on shapes for styling and state changes rather than manipulating the class attribute string directly, which is the recommended approach for class-based SVG styling.

  • classList add, remove, toggle, and contains work on SVG elements
  • Cleaner than manipulating the class attribute string directly
  • The recommended approach for class-based SVG styling and state changes

Common Uses for classList in Interactive SVG

classList is commonly used to toggle a selected or active state class on a clicked shape, to add a highlight class on hover for CSS-driven styling, or to switch between visual states (like valid/invalid on a form field's SVG icon) by toggling classes that corresponding CSS rules respond to.

  • Toggles a selected or active state class on a clicked shape
  • Adds a highlight class on hover for clean CSS-driven styling
  • Switches visual states by toggling classes that CSS rules respond to

Frequently Asked Questions

Was classList always supported on SVG elements?

classList support on SVG elements arrived later than on HTML elements and was inconsistent in older browsers, but it's reliably supported across modern browsers today, so it's safe for current projects.

Should I use classList or set the class attribute directly for SVG styling?

classList is generally cleaner and less error-prone than manipulating the class attribute string manually, since it handles adding, removing, and toggling individual classes without affecting other existing classes.

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