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