Get only values from a map (which has values as array) to an array typescript

Question

I want to get values of a map (which has values as array) and store inside a string array in typescript.

myMap = {0:['a','b','c'], 1:['d','e'], 2:['f','g']};

Expected Result arr['a','b','c','d','e','f','g']

Updated: I haven't used flat() function before. Without flat() function it gives below result.

myMap = { 0: ["a", "b", "c"], 1: ["d", "e"], 2: ["f", "g"] };

const result = Object.values(myMap);
console.log(result);

What have you tried so far? I don't see any attempts of solving the problem. Please see How to Ask and Minimal, Reproducible Example — StackByMe
– StackByMe, Commented May 7, 2021 at 7:51

DecPK · Accepted Answer · 2021-05-07 07:51:08Z

1

Get all values of object using Object.values and then flat the array.

myMap = { 0: ["a", "b", "c"], 1: ["d", "e"], 2: ["f", "g"] };

const result = Object.values(myMap).flat();
console.log(result);

answered May 7, 2021 at 7:51

DecPK

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Prosy A. · Accepted Answer · 2021-05-07 07:53:54Z

1

get the key and valueArray. the iterate through the valueArray.

const myMap = {0:['a','b','c'], 1:['d','e'], 2:['f','g']};
var arr = [];


for (const [key, valueArr] of Object.entries(myMap)) {
  for (var i = 0; i < valueArr.length; i++) {

    arr.push(valueArr[i]);
  }
}

console.log(arr);

answered May 7, 2021 at 7:53

Prosy A.

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