JavaScript。从多维数组推送和读取

我试图将值推入多维数组，并根据我在本网站其他帖子中看到的代码从中读取值。这是我的数组推送代码

SelectedWindowGraphs.push([ContainerIDValue,elementID+"chkbox"]);

ContainerIDValue是一个整数，elementID+“chkbox”是我想要存储在数组中该位置的内容。以下是我调试代码时看到的内容：

---

这不是我想要的。在位置0处，我需要剪切17chkbox、剪切18chkbox和剪切19chkbox。如何修复阵列以便执行此操作？

您必须推送到子阵列：

 if(!SelectedWindowGraphs[ContainerIDValue])
   SelectedWindowGraphs[ContainerIDValue] = [];

 SelectedWindowGraphs[ContainerIDValue]
  .push(elementID+"chkbox");

---

您必须推送到子阵列：

 if(!SelectedWindowGraphs[ContainerIDValue])
   SelectedWindowGraphs[ContainerIDValue] = [];

 SelectedWindowGraphs[ContainerIDValue]
  .push(elementID+"chkbox");

---

您可以在特定位置添加元素，只需执行以下操作：

var arr = [ 1, 2, 3, 4, 5, 6, 7 ]

arr[2] = "three";

console.log(arr);//[ 1, 2, 'three', 4, 5, 6, 7 ]

在多维数组中：

var arr = [ 1, [2, 3, 4, 5, 6], 7 ]

arr[1][2] = "four";

console.log(arr);//[ 1, [ 2, 3, 'four', 5, 6 ], 7 ]

var arr = [1,2,[3,4]]

arr[2].push(5,6);//position 2

console.log(arr);//[ 1, 2, [ 3, 4, 5, 6 ] ]

var arr = [ 1, 2, [3,4,5], 6, 7 ]

arr.splice(2, 0, [8,9,10]);

console.log(arr);//[ 1, 2, [ 8, 9, 10 ], [ 3, 4, 5 ], 6, 7 ]

执行推送操作时，将在末尾添加一个或多个元素

var arr = [1,2,3]

arr.push(4,5);//you are adding 4 and then 5

console.log(arr);//[ 1, 2, 3, 4, 5 ]

在多维数组中：

var arr = [ 1, [2, 3, 4, 5, 6], 7 ]

arr[1][2] = "four";

console.log(arr);//[ 1, [ 2, 3, 'four', 5, 6 ], 7 ]

var arr = [1,2,[3,4]]

arr[2].push(5,6);//position 2

console.log(arr);//[ 1, 2, [ 3, 4, 5, 6 ] ]

var arr = [ 1, 2, [3,4,5], 6, 7 ]

arr.splice(2, 0, [8,9,10]);

console.log(arr);//[ 1, 2, [ 8, 9, 10 ], [ 3, 4, 5 ], 6, 7 ]

要在特定位置插入元素（并向右移动元素n位置），可以使用。在下列情况下，第2和第3位置

var arr = [ 1, 2, 3, 4, 5 ]

arr.splice(2, 0, 999, 8888);

console.log(arr);//[ 1, 999, 8888, 2, 3, 4, 5 ]

在多维数组中：

var arr = [ 1, [2, 3, 4, 5, 6], 7 ]

arr[1][2] = "four";

console.log(arr);//[ 1, [ 2, 3, 'four', 5, 6 ], 7 ]

var arr = [1,2,[3,4]]

arr[2].push(5,6);//position 2

console.log(arr);//[ 1, 2, [ 3, 4, 5, 6 ] ]

var arr = [ 1, 2, [3,4,5], 6, 7 ]

arr.splice(2, 0, [8,9,10]);

console.log(arr);//[ 1, 2, [ 8, 9, 10 ], [ 3, 4, 5 ], 6, 7 ]

---

您可以在特定位置添加元素，只需执行以下操作：

var arr = [ 1, 2, 3, 4, 5, 6, 7 ]

arr[2] = "three";

console.log(arr);//[ 1, 2, 'three', 4, 5, 6, 7 ]

在多维数组中：

var arr = [ 1, [2, 3, 4, 5, 6], 7 ]

arr[1][2] = "four";

console.log(arr);//[ 1, [ 2, 3, 'four', 5, 6 ], 7 ]

var arr = [1,2,[3,4]]

arr[2].push(5,6);//position 2

console.log(arr);//[ 1, 2, [ 3, 4, 5, 6 ] ]

var arr = [ 1, 2, [3,4,5], 6, 7 ]

arr.splice(2, 0, [8,9,10]);

console.log(arr);//[ 1, 2, [ 8, 9, 10 ], [ 3, 4, 5 ], 6, 7 ]

执行推送操作时，将在末尾添加一个或多个元素

var arr = [1,2,3]

arr.push(4,5);//you are adding 4 and then 5

console.log(arr);//[ 1, 2, 3, 4, 5 ]

在多维数组中：

var arr = [ 1, [2, 3, 4, 5, 6], 7 ]

arr[1][2] = "four";

console.log(arr);//[ 1, [ 2, 3, 'four', 5, 6 ], 7 ]

var arr = [1,2,[3,4]]

arr[2].push(5,6);//position 2

console.log(arr);//[ 1, 2, [ 3, 4, 5, 6 ] ]

var arr = [ 1, 2, [3,4,5], 6, 7 ]

arr.splice(2, 0, [8,9,10]);

console.log(arr);//[ 1, 2, [ 8, 9, 10 ], [ 3, 4, 5 ], 6, 7 ]

要在特定位置插入元素（并向右移动元素n位置），可以使用。在下列情况下，第2和第3位置

var arr = [ 1, 2, 3, 4, 5 ]

arr.splice(2, 0, 999, 8888);

console.log(arr);//[ 1, 999, 8888, 2, 3, 4, 5 ]

在多维数组中：

var arr = [ 1, [2, 3, 4, 5, 6], 7 ]

arr[1][2] = "four";

console.log(arr);//[ 1, [ 2, 3, 'four', 5, 6 ], 7 ]

var arr = [1,2,[3,4]]

arr[2].push(5,6);//position 2

console.log(arr);//[ 1, 2, [ 3, 4, 5, 6 ] ]

var arr = [ 1, 2, [3,4,5], 6, 7 ]

arr.splice(2, 0, [8,9,10]);

console.log(arr);//[ 1, 2, [ 8, 9, 10 ], [ 3, 4, 5 ], 6, 7 ]