覆盖数组推送时调用原始方法 [英] Calling original method when overriding array push

问题描述

我正在尝试覆盖数组上的 push 。我需要能够在覆盖之前调用原始的 push 方法，以便可以将元素压入数组。

I'm attempting to override push on an array. I need to be able to call the original push method before overriding so I can push the element onto the array.

下面是我的代码。我在 value 方法中添加了 list.push 。我知道这是错误的，但是我添加了它以显示我要执行的操作。

Below is my code. I've added list.push within the value method. I know this is wrong, but I added it to show what I am trying to do.

let list = [
  'One',
  'Two',
  'Three'
]

Object.defineProperty(list, 'push', {
  value: function(el) {
    list.push(el) // I know this is wrong. Example of what I am trying to do. 
  }
})

推荐答案

以当前对象作为上下文调用原始原型实现：

Invoke the original prototype implementation with your current object as context:

Array.prototype.push.call(this, el)

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