How to append to an associative array between elements?

Question

JavaScript

There is an array
img_array=[];
data is written as follows
img_array[id]=[urls];
Data looks like this:
green:["img/img1.jpg"]
white:["img/img2.jpg"] balck
:["img/img4.jpg"]
blue:["img /img3.jpg"]
So here's how to add data between the white key and balck while keeping the order?

Answer 1

Judging by the description, you have a regular index array. And if so, then you need to search by index to find the element with the black key, and then use the splice method to add a new element to the array at the found position.