哪些 JavaScript 数组函数正在发生变化？

Question

提问by devios1

I am writing an Array-derived class in JavaScript and need to know which functions to overload so that I can be aware of changes made to the array.

我正在用 JavaScript 编写一个数组派生类，需要知道要重载哪些函数，以便我知道对数组所做的更改。

I know Array.push()and Array.splice()are mutating. Is there a definitive list of any others?

我知道Array.push()并且Array.splice()正在变异。是否有任何其他人的最终清单？

Answer 1

You can find the list on MDN as Mutatormethods (along with Accessorand Iterationmethods):

您可以在 MDN 上找到Mutator方法列表（以及Accessor和Iteration方法）：

Answer 2

You can also use .concat(), before using your mutation method, to ensure you are not mutating your arrays, eg

您还可以.concat()在使用您的突变方法之前使用，以确保您不会改变您的数组，例如

const dontMutateMe = [4,5,1,2,3];
const sortArray = dontMutateMe.concat().sort(...)

Answer 3

I found this website called Doesitmutate

我发现这个网站叫Dositmutate

Have the list of all functions - and tells whether it mutates or not.

拥有所有功能的列表 - 并说明它是否发生变异。