32 lines
695 B
TypeScript
32 lines
695 B
TypeScript
const xlinkNS = 'http://www.w3.org/1999/xlink'
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function isXlink(name: string): boolean {
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return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
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}
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function getXlinkProp(name: string): string {
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return isXlink(name) ? name.slice(6, name.length) : ''
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}
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export function patchAttr(
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el: Element,
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key: string,
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value: any,
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isSVG: boolean
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) {
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// isSVG short-circuits isXlink check
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if (isSVG && isXlink(key)) {
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if (value == null) {
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el.removeAttributeNS(xlinkNS, getXlinkProp(key))
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} else {
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el.setAttributeNS(xlinkNS, key, value)
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}
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} else {
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if (value == null) {
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el.removeAttribute(key)
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} else {
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el.setAttribute(key, value)
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}
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}
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}
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