How to return comma delimited string from array, in React Native

Question

I have an array and I want to extract a specific column's values and return the items in a comma-delimited string. What is the best way to go about this? For the below array I would like to get the values of name and return "John,Tim,Mike" Thanks for any assistance

const users = [{
  "name": "John",
  "color": "blue",
},{
  "name": "Tim",
  "color": "red",
},{
  "name": "Mike",
  "color": "green",
}]

I would like to return the results in a comma-delimited string

str = "John,Tim,Mike"

Thanks again for any assistance.

users.map(u => u.name).join(",");

azundo
– azundo

2019-11-14 01:30:57 +00:00
Commented Nov 14, 2019 at 1:30 — azundo
– azundo, Commented Nov 14, 2019 at 1:30

Samuel Goldenbaum · Accepted Answer · 2019-11-14 01:38:53Z

6

You can map to extract names, then run a join:

const users = [{
  "name": "John",
  "color": "blue",
},{
  "name": "Tim",
  "color": "red",
},{
  "name": "Mike",
  "color": "green",
}];

const commaSep = users.map(item => item.name).join(', ');

console.log(commaSep);

edited Nov 14, 2019 at 1:38

answered Nov 14, 2019 at 1:33

Samuel Goldenbaum

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