<!DOCTYPE html>
<html>
    <head>
        <meta charset=utf-8>
    </head>
    <body>
    	<ul id="ul">
            
        </ul>
        <script type="text/javascript">
            const _createPage = (allItem, pageItem) => {
                // 补全代码
                /*
                    根据参数动态生成"li"标签页码并插入"ul"标签下
                    1.正常情况下allItem / pageItem 然后使用ceil向上取整可以求得正常的总页码数
                    2.然后通过for循环拼接字符串，即可得到初步结果
                */
                var n = Math.ceil(allItem / pageItem)
                var ul = document.querySelector("#ul")
                var content = `"li"长度为${n},"li的内容依次为`
                for(let i=1; i<=n; i++){
                    content += `"${i}",`
                }
                ul.children.length = n
                for(let i=1; i<=n; i++){
                    var li = document.createElement("li")
                    li.innerText = i
                    ul.appendChild(li)
                }
                return content.slice(0, -1)
            }
        </script>
    </body>
</html>