20 lines
789 B
JavaScript
20 lines
789 B
JavaScript
Element.prototype.closest = Element.prototype.closest ||
|
|
function closest(selector, selectedElement = this) {
|
|
if (!selectedElement) return null;
|
|
return selectedElement.matches(selector) ?
|
|
selectedElement :
|
|
Element.prototype.closest(selector, selectedElement.parentElement);
|
|
};
|
|
|
|
Element.prototype.matches = Element.prototype.matches ||
|
|
Element.prototype.matchesSelector ||
|
|
Element.prototype.mozMatchesSelector ||
|
|
Element.prototype.msMatchesSelector ||
|
|
Element.prototype.oMatchesSelector ||
|
|
Element.prototype.webkitMatchesSelector ||
|
|
function matches(selector) {
|
|
const elms = (this.document || this.ownerDocument).querySelectorAll(selector);
|
|
let i = elms.length - 1;
|
|
while (i >= 0 && elms.item(i) !== this) { i -= 1; }
|
|
return i > -1;
|
|
};
|