javascript array within array toString()

Question

I have one array like this:

temp = [
'data1',
['data1_a','data1_b'],
['data2_a','data2_b','data2_c']
];
//

I want to change the array within my array using toString(), how the best to do it? Then the array like :

temp = [
'data1',
'data1_a,data1_b',
'data2_a,data2_b,data2_c
];

Ankit Agarwal · Accepted Answer · 2018-04-23 10:15:05Z

6

use map and get that desired output. No need for any other complex methods or functions,

var temp = [
  'data1',
  ['data1_a','data1_b'],
  ['data2_a','data2_b','data2_c']
];


var res = temp.map((item) => item.toString());

console.log(res);

answered Apr 23, 2018 at 10:15

Ankit Agarwal

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Comments

baao · Accepted Answer · 2018-04-23 10:17:31Z

3

Just map it and return the stringified version. There's no need for any checks - the strings will just be unmodified, the arrays will be converted like you want them

temp = [
  'data1', ['data1_a', 'data1_b'],
  ['data2_a', 'data2_b', 'data2_c']
];

let foo = temp.map(String);
console.log(foo);

answered Apr 23, 2018 at 10:17

baao

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1 Comment

ikwijaya Over a year ago

but if i provide NULL in array, this NULL will be 'null', how to give this empty??

Mohammad Usman · Accepted Answer · 2018-04-23 10:12:41Z

1

You can use .map() with .join():

let temp = [
  'data1',
  ['data1_a','data1_b'],
  ['data2_a','data2_b','data2_c']
];

let result = temp.map(v => Array.isArray(v) ? v.join(",") : v);

console.log(result);

Docs:

answered Apr 23, 2018 at 10:12

Mohammad Usman

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Comments

Saeed · Accepted Answer · 2018-04-23 10:14:17Z

0

Use this

temp = [
'data1',
['data1_a','data1_b'],
['data2_a','data2_b','data2_c']
];

for(var i = 0; i < temp.length; i ++) {
    temp[i] += "";
}

console.log(temp);

answered Apr 23, 2018 at 10:14

Saeed

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