javascript - Using extra callback parameters to Array.prototype.some -

Do you have any real-world examples of using the second and third criteria for the array of callback prototype? Com or array.prototype.ai ?

:

Callback is implemented with three arguments: the value element, the index of the element, and the array object being crossed.

I have never used them personally.

I have been working for a while, we have created the Javascript functional programming library, and we have not used the index and orrate parameters for other similar functions we started on. There are good reasons for this to tell me that here map and filters and for some functions, there is no need to go over here, The parameters are some topical utility so we provide a second function that they provide for your callback. (For example, map.idx (yourFunc, list) .)

but I have never done anything like for some or Have not considered every . I have never imagined its practical use, but now one suggestion is that we are adding these functions to our list.

So my question is, did you ever need a real, live, real-world callback function to be some or every actually require these parameters is? If so, can you describe it?

"No, I never do" will also have helpful data, thanks.

Quick search in our code:

  function iscending (array) {Return array.every (function (e, idx, arr) {return (idx === 0) is true: arr [idx-1] & lt; = e;}); }