js录入编程题，我要输入这种类型的数组，输入值类型该怎么选？
[ null, 8, "tom", undefined,
{type: "product",
content: "product1",
},
{
type: "product",
content: "product2",
},
{
type: "tag",
content: "tag1",
},
{
type: "product",
content: "product3",
},
{
type: "tag",
content: "tag2",
},
]#JavaScript#
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