how to convert string to array to new another array?

Question

I have static something like code below.

let str='4'
let tmp=['A', 'B']

I want it to be like that

let myCode=4:['A', 'B']

What you want is not valid JavaScript. Do you want it to be `{ 4:['A', 'B'] }`, i.e. an object? If this is the case: `let myCode = { [str]: tmp }` — Ram, Sep 26 '18 at 02:17

score 1 · Accepted Answer · edited Sep 26 '18 at 02:42

1

What you want is invalid JavaScript. If you want this result:

myCode = {
    4: ['A', 'B']
};

Then just do this:

let myCode = { [str]: tmp };

Or:

let myCode = {};
myCode[str] = tmp;

edited Sep 26 '18 at 02:42

Ram

answered Sep 26 '18 at 02:24

Jack Bashford

`str` should be `[str]`. The latter syntax is called "Computed property name". – Ram Sep 26 '18 at 02:29
OK, I'll try that and see what happens. Go ahead and edit with correct syntax. It does seems to work after I've tested it however @undefined – Jack Bashford Sep 26 '18 at 02:29
Both syntaxes are valid but do different things. The `str` creates `'str'` key and `[str]` creates a key by using `str` variable's value. – Ram Sep 26 '18 at 02:37
It works fine, Thank you for your refly – Aneat Tea Sep 26 '18 at 02:56

1 Answers1