yomichan/ext/bg/js/native-simple-dom-parser.js

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JavaScript
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/*
* Copyright (C) 2020 Yomichan Authors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
class NativeSimpleDOMParser {
constructor(content) {
this._document = new DOMParser().parseFromString(content, 'text/html');
}
getElementById(id, root=null) {
return (root || this._document).querySelector(`[id='${id}']`);
}
getElementByTagName(tagName, root=null) {
return (root || this._document).querySelector(tagName);
}
getElementsByTagName(tagName, root=null) {
return [...(root || this._document).querySelectorAll(tagName)];
}
getElementsByClassName(className, root=null) {
return [...(root || this._document).querySelectorAll(`.${className}`)];
}
getAttribute(element, attribute) {
return element.hasAttribute(attribute) ? element.getAttribute(attribute) : null;
}
getTextContent(element) {
return element.textContent;
}
static isSupported() {
return typeof DOMParser !== 'undefined';
}
}