知识 点是 Math.ceil() 和模版字符串
<body>
<ul id="ul">
</ul>
<script type="text/javascript">
const _createPage = (allItem, pageItem) => {
// 补全代码 queryS
// document.querySelector
let ul = document.querySelector('#ul')
const length = Math.ceil(allItem/pageItem)
let str = ''
for (let index = 1; index <= length; index++) {
str +=`<li>${index}</li>`
}
ul.innerHTML = str
}
</script>
</body>



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