如何使用嵌套For循環在新行上打印數組中的數組值？

Question

我想從數組中的這些數組中獲取數字以在新行上打印，但無法弄清楚如何引用它們以便將它們打印到控制檯。我在這裏錯過了什麼？

var numbers = [ 
    [1,2,3,4,5,6,7], 
    [8,9,10,11,12,13,14,15,16], 
    [17,18,19], 
    [20], 
    [21,22,23,24,25,26], 
    [27,28,29,30] 
]; 

for (i=0; i<numbers.length; i++) { 
    for (j=0; j<numbers[i].length; j++) { 
     console.log(numbers[i].j); //The problem is with this j here I suspect... 
    } 
} 

Answer 1

號碼[I] .J訪問屬性j表示在號碼每個陣列，要數[i] [j]，其訪問單元j的數組編號，[I ]

Answer 2

嘗試

for (i=0; i<numbers.length; i++) { 
    for (j=0; j<numbers[i].length; j++) { 
     console.log(numbers[i][j]); //The problem is with this j here I suspect... 
    } 
} 

Answer 3

它應該閱讀，而不是這樣：

var numbers = [ 
    [1,2,3,4,5,6,7], 
    [8,9,10,11,12,13,14,15,16], 
    [17,18,19], 
    [20], 
    [21,22,23,24,25,26], 
    [27,28,29,30] 
]; 

for (i=0; i<numbers.length; i++) { 
    for (j=0; j<numbers[i].length; j++) { 
     console.log(numbers[i][j]); 
    } 

} 

Answer 4

改變這個

console.log(numbers[i][j]);