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polyfill element.closest for ie11

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This commit is contained in:
Hakim El Hattab 2020-05-26 10:45:05 +02:00
parent e6244a57b5
commit b7487b8b4f
10 changed files with 45 additions and 34 deletions
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27
js/utils/util.js
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@ -94,14 +94,10 @@ export const transformElement = ( element, transform ) => {
*
* @return {Boolean}
*/
export const matchesSelector = ( target, selector ) => {
export const matches = ( target, selector ) => {
// There's some overhead doing this each time, we don't
// want to rewrite the element prototype but should still
// be enough to feature detect once at startup...
let matchesMethod = parent.matches || parent.matchesSelector || parent.msMatchesSelector;
let matchesMethod = target.matches || target.matchesSelector || target.msMatchesSelector;
// If we find a match, we're all set
return !!( matchesMethod && matchesMethod.call( target, selector ) );
}
@ -117,20 +113,21 @@ export const matchesSelector = ( target, selector ) => {
* @return {HTMLElement} The matched parent or null
* if no matching parent was found
*/
export const closestParent = ( target, selector ) => {
export const closest = ( target, selector ) => {
let parent = target.parentNode;
// Native Element.closest
if( typeof target.closest === 'function' ) {
return target.closest( selector );
}
while( parent ) {
// If we find a match, we're all set
if( matchesSelector( parent, selector ) ) {
return parent;
// Polyfill
while( target ) {
if( matches( target, selector ) ) {
return target;
}
// Keep searching
parent = parent.parentNode;
target = target.parentNode;
}
return null;