static domElement(domElementOrSelector) {
        let domElement;
        if (AutoNumericHelper.isString(domElementOrSelector)) {
            domElement = document.querySelector(domElementOrSelector);
        } else {
            domElement = domElementOrSelector;
        }

        return domElement;
    }
Return the DOM element when passed either a DOM element or a selector string.

@param {HTMLElement|string} domElementOrSelector
@returns {HTMLElement}