- 技术
- 重学ES系列之Set实现数组去重、交集、并集、差集
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<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Set实现数组去重、交集、并集、差集
</title>
</head>
<body>
</body>
<script>
let {log} = console;
let arr = [1,2,3,3];
let arr1 = [1,2,3,3,5];
let set1 = new Set([...arr]);
log([...set1]);
let set2 = new Set([...arr, ...arr1]);
log([...set2]);
let set3= new Set([...set1].filter(x=>new Set([...arr1]).has(x)));
log([...set3]);
let set4 = new Set([...set2].filter(function (x) {
return !set1.has(x)
}))
log([...set4]);
let setarr1 = new Set([1,2]);
setarr1.add(0);
log(setarr1);
setarr1.delete(2);
log(setarr1);
</script>
</html>
作者：Vam的金豆之路
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