GoScrobble/web/node_modules/dom-helpers/cjs/contains.js

21 lines
638 B
JavaScript

"use strict";
exports.__esModule = true;
exports.default = contains;
/* eslint-disable no-bitwise, no-cond-assign */
/**
* Checks if an element contains another given element.
*
* @param context the context element
* @param node the element to check
*/
function contains(context, node) {
// HTML DOM and SVG DOM may have different support levels,
// so we need to check on context instead of a document root element.
if (context.contains) return context.contains(node);
if (context.compareDocumentPosition) return context === node || !!(context.compareDocumentPosition(node) & 16);
}
module.exports = exports["default"];