题解 | #数组排序#
数组排序
https://www.nowcoder.com/practice/18ea36ef9b0c470e9db7681eced6e8df
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<button class='up'>销量升序</button>
<button class='down'>销量降序</button>
<ul></ul>
<script>
var cups = [
{ type: 1, price: 100, color: 'black', sales: 3000, name: '牛客logo马克杯' },
{ type: 2, price: 40, color: 'blue', sales: 1000, name: '无盖星空杯' },
{ type: 4, price: 60, color: 'green', sales: 200, name: '老式茶杯' },
{ type: 3, price: 50, color: 'green', sales: 600, name: '欧式印花杯' }
]
var ul = document.querySelector('ul');
var upbtn = document.querySelector('.up');
var downbtn = document.querySelector('.down');
// 补全代码
upbtn.onclick = () => {
//清空li
ul.innerHTML = '';
cups.sort((a, b) => a.sales - b.sales);
// console.log(cups);
let res = document.createDocumentFragment();
for (let item of cups) {
let li = document.createElement('li');
li.innerHTML = item.name;
res.appendChild(li);
}
ul.appendChild(res);
}
downbtn.onclick = () => {
//清空li
ul.innerHTML = '';
cups.sort((a, b) => b.sales - a.sales);
// console.log(cups);
let res = document.createDocumentFragment();
for (let item of cups) {
let li = document.createElement('li');
li.innerHTML = item.name;
res.appendChild(li);
}
ul.appendChild(res);
}
</script>
</body>
</html>
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