Essentially querySelectorAll with regex support. Modified from: https://stackoverflow.com/a/62144522

DOMRegex.js

/**
 * @plug
 *  DOMRegex.js 
 *  https://mattoestreich.com
 *
 * @description
 *  Modified from: https://stackoverflow.com/a/62144522
 *  TLDR; querySelectorAll with regex support
 *
 * @important
 *  *** If the `attribute` parameter IS NOT supplied, we search ALL attributes on ALL DOM nodes!***
 *
 * @example
 *  Consider the following: 
 *   `<div data-foo="bar"></div>`
 *  If you wanted to target that node: 
 *   `document.DOMRegex(/bar/gm, "data-foo");` 
 *
 *
 * @param {Regular Expression} regex Regex string
 * @param {String} attribute The attribute you wish to search
 */
document.DOMRegex = (regex, attribute = undefined) => {
  const output = [];

  if (attribute === undefined) {
    for (let element of document.querySelectorAll("*")) {
      for (let elattribute of element.attributes) {
        const { name, value } = elattribute;

        if (regex.test(value)) {
          output.push({
            element,
            attribute: { name, value },
          });
        }
      }
    }
    return output;
  }

  for (let element of document.querySelectorAll(`[${attribute}]`)) {
    const name = attribute;
    const value = element.getAttribute(name).toString();

    if (regex.test(value)) {
      output.push({
        element,
        attribute: { name, value },
      });
    }
  }
  return output;
}; // end domRegex.js