Function forEach

src/test/resources/libraries/htmx/htmx-2.0.0/src/htmx.js:749–755

* @template T * @param {T[]|NamedNodeMap|HTMLCollection|HTMLFormControlsCollection|ArrayLike } arr * @param {(T) => void} func

(arr, func)

   * @param {(T) => void} func
   */
  function forEach(arr, func) {
    if (arr) {
      for (let i = 0; i < arr.length; i++) {
        func(arr[i])
      }
    }
  }

  /**
   * @param {Element} el