SVG Icons in Lit Web Components
Lit's template literal syntax embeds SVG markup directly, with shadow DOM providing automatic style encapsulation for icon components.
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Embedding SVG in Lit Templates
Lit's html tagged template literal syntax allows SVG markup to be embedded directly within a component's render method just like any other HTML, with Lit's reactive property system letting SVG attributes like fill or a path's d attribute bind dynamically to component state, updating automatically when that state changes.
- SVG markup embeds directly within Lit's html tagged template literals
- Reactive properties can bind dynamically to SVG attributes like fill or d
- Component updates automatically re-render the SVG when bound state changes
Styling SVG Icons Within Shadow DOM Scope
Because Lit components render into shadow DOM by default, SVG icon styles defined within a component's static styles block are automatically scoped to that component, preventing icon styling from leaking out to or being affected by the rest of the page's global CSS, which simplifies building a self-contained, reusable icon component.
- Shadow DOM automatically scopes SVG icon styles to the component
- Prevents icon styling from leaking to or being affected by global page CSS
- Simplifies building self-contained, genuinely reusable icon components
Frequently Asked Questions
Can external global CSS still theme SVG icons inside a Lit component?
By default shadow DOM blocks global styles, but CSS custom properties defined outside the component do cross the shadow boundary, making them the standard way to let external theming reach into a Lit icon component.
Does using currentColor work the same way inside a Lit component's shadow DOM?
Yes, currentColor still resolves based on the inherited color property the normal way, and since color does inherit across the shadow boundary, external theming can still control icon color through that mechanism.
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