I would like to add value to my URL after the specific text. How I can achieve this?

I found a solution where I can slice and add values but I don't have the index fixed in this URL.

```
const url = 'www.website.com/api/test1/test2';

const url = 'www.website.test.com/api/test1/test2/test3';

const output1 = 'www.website.com/api/ha/test1/test2';

const output2 = 'www.website.test.com/api/ha/test1/test2/test3';

```