How can I add "sa" With "eed" In javascript for example.???😢😢😢

Question

Adding strings together

Answer 1

I used
Document.write(ur_name+="y");
In a code,but it did not work.

Answer 2

Sorry for annoying you but try to see my code
https://code.sololearn.com/Wzsu80sZlfJ3/?ref=app

Answer 3

document.write("sa"+"eed")
Or
your_name="saeed"
document.write(your_name +("y"))