<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>ES6解构代替concat数组拼接</title>
</head>
<body>
<script type="text/javascript">
let a = [1, 2, 3]
let b = [4, 5]
let c = [...a, ...b]
console.log(c)
</script>
</body>
</html>