如何从javascript变量中删除对象/数组？

Question

如何从javascript变量中删除对象/数组？

Answer 1

You can use Array.prototype.pop() to remove the last element of an array. 您可以使用Array.prototype.pop()删除数组的最后一个元素。

bankBranchReponse.pop();

To remove an element at a specific index, for example the 3rd element: 要删除特定索引处的元素，例如第三个元素：

var index = 2; // zero based so 2 is the 3rd element
bankBranchReponse.splice(index, 1);

Answer 2

You can use the .pop() method. 您可以使用.pop()方法。

var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.pop();

The result of fruits will be: 水果的结果将是：

Banana,Orange,Apple

Remove another element 删除另一个元素

To remove a certain element at an index inside the array you can use the method splice 要删除数组内部索引处的某个元素，可以使用splice方法

So For example 所以举个例子

var myFish = ['angel', 'clown', 'drum', 'surgeon', 'apple'];
// removes 1 element from index 3
removed = myFish.splice(3, 1);

And the result will be 结果将是

myFish is ['angel', 'clown', 'drum', 'apple']
removed is ['surgeon']

Remember that array is zero-indexed so the 3rd element is the element number 2. 请记住，数组是零索引的，因此第三个元素是元素编号2。