How do i assign a defined variable as a key while updating by object?

Question

For instance, in this function even if i already assigned the value of a. The program considers a as An individual letter and does not add the value assigned to it in the html program.

let obj={}

function reg() {
let a = document.getElementById('user').value 
let b = document.getElementById('pass').value
obj.a=b

}

Output= a:the assigned value for b

Pls clarify my doubt.

square brackets instead of a dot. `obj[a] = b`. The content of the brackets is evaluated as an expression, and its result is used as the key. — , Jul 04 '20 at 20:06

score 0 · Accepted Answer · answered Jul 04 '20 at 20:08

0

Hey there this problem should be solved by

obj[a]=b

This is because the object.key method only works if the key is already present in the object

Happy coding and do let me know if you have any queries!

answered Jul 04 '20 at 20:08

Yash.S.Narang

518
4
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Whether or not the key already present has no impact on how the `object.key` syntax works. – Jul 04 '20 at 20:20

How do i assign a defined variable as a key while updating by object?

1 Answers1