Converting important information from elements in an Array into a string separated by commas

Question

Converting important information from elements in an Array into a string separated by commas

Which lodash method or function is best suited for extracting the ids from the array below and creating a comma-separated string out of them?

var myArray = [
    {
        tag: 'wunwun',
        id: 132
    },
    {
        tag: 'davos',
        id: 452
    },
    {
        tag: 'jon snow',
        id: 678
    }
]

Result should be: '132, '452', '678'

javascript arrays string lodash

Answer 1

Answer №1

Utilize the Array#map function to extract an array of id values and then use Array#join to combine them into a single string.

var items = [{
  tag: 'wunwun',
  id: 132
}, {
  tag: 'davos',
  id: 452
}, {
  tag: 'jon snow',
  id: 678
}];
var extractedIds = items.map(function(obj) {
  return obj.id;
});
console.log(extractedIds.join(', '))

Answer 2

Utilize the Array#map function to extract an array of id values and then use Array#join to combine them into a single string.

var items = [{
  tag: 'wunwun',
  id: 132
}, {
  tag: 'davos',
  id: 452
}, {
  tag: 'jon snow',
  id: 678
}];
var extractedIds = items.map(function(obj) {
  return obj.id;
});
console.log(extractedIds.join(', '))

Answer 3

Answer №2

You don't need to rely on any external libraries for this task:

Create a variable that stores comma-separated IDs by mapping through an array and joining them together:
var commaSeparatedIds = myArray.map(function(item) {
    return item.id;
}).join(','); // result: '132,452,678'

If you prefer the IDs as an array instead of a string, you can omit the join method:

Create a variable that stores the IDs as an array using the map function:
var commaSeparatedIds = myArray.map(function(item) {
    return item.id;
}); // result: ['132', '452', '678']

Additional Resources:

Answer 4

You don't need to rely on any external libraries for this task:

Create a variable that stores comma-separated IDs by mapping through an array and joining them together:
var commaSeparatedIds = myArray.map(function(item) {
    return item.id;
}).join(','); // result: '132,452,678'

If you prefer the IDs as an array instead of a string, you can omit the join method:

Create a variable that stores the IDs as an array using the map function:
var commaSeparatedIds = myArray.map(function(item) {
    return item.id;
}); // result: ['132', '452', '678']

Additional Resources:

Answer 5

Answer №3

Here's a simple solution:

_.pluck(myArray, 'id').join(', ')

You can also use _.map, which allows you to pass in a function instead of an array.

Answer 6

Here's a simple solution:

_.pluck(myArray, 'id').join(', ')

You can also use _.map, which allows you to pass in a function instead of an array.

Answer 7

Answer №4

let newArray = myArray.map(item => item.name;}).join(',');

Answer 8

let newArray = myArray.map(item => item.name;}).join(',');

Converting important information from elements in an Array into a string separated by commas

Answer №1

Answer №2

Answer №3

Answer №4

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