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">
</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 = function() {
cups.sort((a, b) => (a.sales - b.sales));
// 清空 ul 元素内的所有 li 元素
while (ul.firstChild) {
ul.removeChild(ul.firstChild);
}
cups.forEach(item=>{
var liElement = document.createElement('li');
liElement.textContent = item.name;
ul.appendChild(liElement);
})
},
downbtn.onclick= function(){
cups.sort((a, b) => (b.sales - a.sales));
while (ul.firstChild) {
ul.removeChild(ul.firstChild);
}
cups.forEach(item=>{
var liElement = document.createElement('li');
liElement.textContent = item.name;
ul.appendChild(liElement);
})
}
</script>
</body>
</html>
#数组排序#
美团成长空间 2667人发布
