Example code 8 of Web Word(2).js

/**
 * Layout a page and return next page number
 * @param {number} pageNumber - page number
 * @returns {Promise} promise
 */
_layoutPage(pageNumber = 1) {
....
        let allExceedParagraphs, nextPageBodyElement;
        if (exceedParagraph) {
            this._splitParagraph(exceedParagraph, pageBodyBottom);
            allExceedParagraphs = this._getExceedAllParagraphs(pageBodyElement, pageBodyBottom);
....
}