vanillajs-browser-helpers/insertAfter.mjs

Collection of convenience code snippets (helpers) that aims to make it a little easier to work with vanilla JS in the browser

import isString from 'vanillajs-helpers/isString';
import ensureHTML from './ensureHTML';
import inDOM from './inDOM';
import isDOMRoot from './isDOMRoot';
/**
 * Inserts DOM element or plain HTML after a given DOM element
 *
 * @param elm - The DOM element to insert elements after
 * @param insertElm - DOM element or HTML (or selector) to insert
 * @return The inserted element
 */
export default function insertAfter(elm, insertElm) {
    if (!inDOM(elm) || isDOMRoot(elm)) {
        return null;
    }
    if (isString(insertElm)) {
        elm.insertAdjacentHTML('afterend', ensureHTML(insertElm));
    }
    else {
        elm.insertAdjacentElement('afterend', insertElm);
    }
    return elm.nextElementSibling;
}