How to return array to new Map ? using Javascript

Question

I need to return back from array to new Map data.

I have a array:


let test = [
['test' , true],
['test1' , true],
['test2' , true]
];

I need to set this to new Map like a :


{ 'test' => true }
{ 'test1' => true }
{ 'test2' => true }

What i am try ?


newMapData = [...new Map(test)];

But this is no work correctly.

I am using : https://www.w3schools.com/js/js_object_maps.asp

Use the official documentation instead. In particular, see what parameters the Map constructor accepts. — Sebastian Simon
– Sebastian Simon, Commented Nov 15, 2022 at 20:40
Not sure why you're trying to spread the map. newMapData = new Map(test) works perfectly... — code
– code, Commented Nov 15, 2022 at 20:41

TAHER El Mehdi · Accepted Answer · 2022-11-15 20:53:07Z

1

You can convert to the new ES6 Map simply do it without ...

let test = [
  ['test', true],
  ['test1', true],
  ['test2', true]
];
const newMapData = new Map(test);
// Unfortunately Maps don't show well with console.log:
for (let [key, value] of newMapData) {
  console.log(key + " = " + value);
}
// Map {"test" => true, "test1" => true, "test2" => true}

edited Nov 15, 2022 at 20:53

answered Nov 15, 2022 at 20:46

TAHER El Mehdi

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