题解 | #数组过滤#
数组过滤
https://www.nowcoder.com/practice/46d607f9bf64458daa8798339a7336d0
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
</head>
<body>
<select name="" id="">
<option value="0">请选择销量范围</option>
<option value="1"><100</option>
<option value="2">100~500</option>
<option value="3">>500</option>
</select>
<ul>
<li>牛客logo马克杯</li>
<li>无盖星空杯</li>
<li>老式茶杯</li>
<li>欧式印花杯</li>
</ul>
<script>
var cups = [
{ type: 1, price: 100, color: 'black', sales: 60, name: '牛客logo马克杯' },
{ type: 2, price: 40, color: 'blue', sales: 100, 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 select = document.querySelector('select');
var ul = document.querySelector('ul');
// 补全代码
select.onchange = function (e) {
var current = select.value
var filterData = []
switch(current) {
case '0':
break;
case '1':
filterData = cups.filter(elem => elem.sales < 100)
break
case '2':
filterData = cups.filter(elem => (elem.sales >= 100 && elem.sales < 500))
break
case '3':
filterData = cups.filter(elem => elem.sales > 500)
break
}
renderDom(filterData)
}
function renderDom(data = []) {
var lis = ''
data.forEach(elem => {
lis += `<li>${elem.name}</li>`
})
ul.innerHTML = lis
}
</script>
</body>
</html>
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