24 lines
647 B
TypeScript
24 lines
647 B
TypeScript
// swapElements assumes that both elements have valid parent nodes.
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export default function swapElements(a: Node, b: Node) {
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const bParent = b.parentNode as Node
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const bNext = b.nextSibling
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// Special case for when a is the next sibling of b
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if(bNext === a) {
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// Just put a before b
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bParent.insertBefore(a, b)
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} else {
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// Insert b right before a
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(a.parentNode as Node).insertBefore(b, a)
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// Now insert a where b was
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if(bNext) {
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// If there was an element after b, then insert a right before that
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bParent.insertBefore(a, bNext)
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} else {
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// Otherwise just append it as the last child
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bParent.appendChild(a)
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}
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}
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}
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