js concat连接数组

arrayObject.concat(arrayX,arrayX,......,arrayX)

eg: var arr = new Array(3)

    arr[0] = "George"

    arr[1] = "John"

    arr[2] = "Thomas"

    var arr2 = new Array(3)

    arr2[0] = "James"

    arr2[1] = "Adrew"

    arr2[2] = "Martin"

    document.write(arr.concat(arr2))

eg: var arr1 = new Arry["你好","小明"];

      var arr2 = new Arry["欢迎","光临"];

      var arr3 = arr1.concat(arr2);

      console.log(arr3);