题解 | #列表内容排序再渲染#
列表内容排序再渲染
https://www.nowcoder.com/practice/2dffcb354a484995894655a5547b0b49
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<ul id="myList">
<li id="item1">项目 1</li>
<li id="item3">项目 3</li>
<li id="item2">项目 2</li>
<li id="item4">项目 4</li>
</ul>
<script>
function sortAndReturnTextContent() {
const items = document.getElementById('myList').children;
console.log(items)
// 在此补全代码
const itemsNew = []
for (let i = 0; i < items.length; i++) {
console.log(items[i].id.replace("item", ""))
itemsNew.push({
id: items[i].id.replace("item", ""),
text: items[i].innerHTML
})
}
itemsNew.sort((a, b) => { return a.id - b.id })
let liElements = ""
for (let i = 0; i < itemsNew.length; i++) {
liElements = liElements + `<li>${itemsNew[i].text}</li>`
console.log(liElements)
}
document.getElementById('myList').innerHTML = liElements;
}
sortAndReturnTextContent()
</script>
</body>
</html>
