30 lines
604 B
JavaScript
30 lines
604 B
JavaScript
import { Controller } from 'stimulus'
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export default class extends Controller {
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static targets = [ 'item' ]
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connect () {
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window.addEventListener('scroll:section', event => this.update(event.detail.id))
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}
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get items () {
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if (!this._items) {
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this._items = {}
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for (const item of this.itemTargets) {
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this._items[item.href.split('#')[1]] = item
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}
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}
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return this._items
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}
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update (id) {
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for (const item of Object.values(this.items)) {
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item.classList.remove('active')
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}
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if (this.items[id]) this.items[id].classList.add('active')
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}
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}
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