<!DOCTYPE html>
<html>
<body>
<h1>JavaScript 数组</h1>
<p>concat() 方法连接两个或多个数组。</p>
<p id="demo"></p>
<script>
var sedan = ["S60", "S90"];
var SUV = ["XC40", "XC60", "XC90"];
var Volvo = sedan.concat(SUV);
document.getElementById("demo").innerHTML = Volvo;
</script>
</body>
</html>