更新 javascript 数组

Question

我几周前刚开始使用 javascript。如何向该数组添加或编辑元素：

var array = [["A1","B1","C1"],
             ["A2","B2","C2"],
             ["A3","B3","C3"],
             ["A4","B4","C4"],
             ["A5","B5","C5"],
             ["A1","B1","C1"],
             ["A2","B2","C2"],
             ["A3","B3","C3"],
             ["A4","B4","C4"],
           ];

比如我想添加["C1", "C2", "C3"]或者更新第二行为["Z1" , "Z2", "Z3"]

Answer 1

如果您想访问最顶层的数组，您可以使用push 或pop 或其他一些原生数组方法。您可以通过索引访问内部数组（例如 array[0]），然后在内部数组上使用常规数组方法。您可以阅读有关数组及其方法的更多信息here

要回答您的两个示例，要添加一个新数组，您需要 array.push(newArray) 其中 newArray 是您要插入的数组，["C1", "C2", "C3"]，如果您想更新第二行，您可以通过索引访问它array[1] 并将其设置为新值 array[1] = ["Z1" , "Z2", "Z3"]

Answer 2

array.push(["C1", "C2", "C3"] );

array[1] = ["Z1" , "Z2", "Z3"];