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7d8c7c4ba8
The `prev()` function doesn't take nodes other than elements into account. Also we could simplify things a lot using the `previousElementSibling` property. This property isn't fully supported in IE, it only works for elements, but since the `element` variable is an element, we can safely use it here. I've also added an additional test. I don't think we had this issue in v4, since we relied on jQuery back then. Ref. https://developer.mozilla.org/en-US/docs/Web/API/NonDocumentTypeChildNode/nextElementSibling
74 lines
1.7 KiB
JavaScript
74 lines
1.7 KiB
JavaScript
/**
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* --------------------------------------------------------------------------
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* Bootstrap (v4.3.1): dom/selector-engine.js
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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* --------------------------------------------------------------------------
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*/
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import { find as findFn, findOne, matches, closest } from './polyfill'
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import { makeArray } from '../util/index'
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/**
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* ------------------------------------------------------------------------
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* Constants
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* ------------------------------------------------------------------------
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*/
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const NODE_TEXT = 3
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const SelectorEngine = {
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matches(element, selector) {
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return matches.call(element, selector)
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},
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find(selector, element = document.documentElement) {
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return findFn.call(element, selector)
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},
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findOne(selector, element = document.documentElement) {
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return findOne.call(element, selector)
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},
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children(element, selector) {
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const children = makeArray(element.children)
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return children.filter(child => this.matches(child, selector))
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},
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parents(element, selector) {
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const parents = []
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let ancestor = element.parentNode
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while (ancestor && ancestor.nodeType === Node.ELEMENT_NODE && ancestor.nodeType !== NODE_TEXT) {
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if (this.matches(ancestor, selector)) {
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parents.push(ancestor)
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}
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ancestor = ancestor.parentNode
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}
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return parents
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},
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closest(element, selector) {
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return closest.call(element, selector)
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},
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prev(element, selector) {
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let previous = element.previousElementSibling
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while (previous) {
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if (this.matches(previous, selector)) {
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return [previous]
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}
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previous = previous.previousElementSibling
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}
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return []
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}
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}
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export default SelectorEngine
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