15 lines
503 B
TypeScript
15 lines
503 B
TypeScript
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const CUSTOM_CSS_STYLE_ID = 'netcatty-custom-css';
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/** Inject or update the user custom CSS style block in document.head. */
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export function applyCustomCssToDocument(css: string): void {
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if (typeof document === 'undefined') return;
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let styleEl = document.getElementById(CUSTOM_CSS_STYLE_ID) as HTMLStyleElement | null;
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if (!styleEl) {
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styleEl = document.createElement('style');
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styleEl.id = CUSTOM_CSS_STYLE_ID;
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document.head.appendChild(styleEl);
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}
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styleEl.textContent = css;
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}
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