Javascript variable scope in object literal

Asked Apr 14 '21 at 06:54

Active Apr 14 '21 at 06:59

Viewed 28 times

a newbie question.. Here's my code:

let result = (...ohStr) => {
    let res = []; // edited (before res = [])
    for (const Str of ohStr){
        if(/oh{3,6} no/.test(Str)){
            res.push({Str:true});
        }
        else{
            res.push({Str:false});
        }
    }
        return res;
}

console.log(result("ohhh no","ohhhh no","ohhhhh no","oh no","ohh no"));

The question is why the res array is created like this:

[ { Str: true },
  { Str: true },
  { Str: true },
  { Str: false },
  { Str: false } ]

instead adding the Str value every iteration in for loop? and how I overcome this problem?

edited Apr 14 '21 at 06:59

asked Apr 14 '21 at 06:54

asrofil

2

Do you want just a singular result, or a mapped result? `res = []` (which should be `let res = []` by the way) indicates an array result is desired. Are you hoping for `{"ohhh no": true}` instead? – tadman Apr 14 '21 at 06:56
Try pushing { [Str]: true } – JBallin Apr 14 '21 at 06:57
Do you want only values like `true` or `false` in an array – DecPK Apr 14 '21 at 06:57
1

What is the expected output? – adiga Apr 14 '21 at 06:58
singular result, btw i'll edit ```res = []``` to ```let res = []``` – asrofil Apr 14 '21 at 06:58
If you want a single result you can replace `res.push({Str:X});` to `res['Str] = X` where 'X' refers to any value true/false – FAHAD SIDDIQUI Apr 14 '21 at 07:02
thanks, my bad didnt do a further search topics... – asrofil Apr 14 '21 at 07:02
Fixed it up a bunch [here](https://gist.github.com/tadman/91c320b5b8930798549376587cd7c78d). Someone slammed the question closed before I could add an answer. – tadman Apr 14 '21 at 07:02
@tadman It's a duplicate, are we supposed to answer those instead? – Apr 14 '21 at 07:05
@ikhvjs It's not filtering in this form, it's mapping. – tadman Apr 14 '21 at 07:05
@ChrisG There's multiple problems in this question that need addressing. That's just the biggest one. – tadman Apr 14 '21 at 07:05

Javascript variable scope in object literal

0 Answers0