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' onclick="up()">销量升序</button>
<button class='down' onclick="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
initUl(cups);
function initUl(initArr) {
for(let i = 0; i < initArr.length; i++) {
let liEl = document.createElement('li');
liEl.innerHTML = initArr[i].name;
ul.appendChild(liEl)
}
}
function up() {
ul.innerHTML = '';
for(let i = 0; i < cups.length; i++) {
for(let j = i+1; j < cups.length; j++) {
if (cups[i].sales > cups[j].sales) {
let temp = cups[i];
cups[i] = cups[j];
cups[j] = temp;
}
}
};
initUl(cups);
}
function down() {
ul.innerHTML = '';
for(let i = 0; i < cups.length; i++) {
for(let j = i+1; j < cups.length; j++) {
if (cups[i].sales < cups[j].sales) {
let temp = cups[i];
cups[i] = cups[j];
cups[j] = temp;
}
}
};
initUl(cups);
}
</script>
</body>
</html>
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