题解 | JS15 生成页码

        const _createPage = (allItem, pageItem) => {
            // 补全代码
            const pageNum = Math.ceil(allItem / pageItem);
            const container = document.querySelector('#ul');
            for(let i = 1;i<=pageNum;i++){
                const li = document.createElement('li');
                li.innerText = i;
                container.appendChild(li)
            }
        }