<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
// 多个数组拼接
var arr=['李大','李二','李三']
var arr1=['王大','王二','王三']
var arr2=['孙大','孙二','孙三']
console.log(arr.concat(arr1));
console.log(arr.concat(arr1,arr2));
</script>
</body>
</html>