How to find a property in a nested object
-1
I'm trying to figure out how to extract result based on an object property value that is inside another object e.g
{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Here are my tests:
// this works
const test1 = _.find(existingBooks, {
title: uploadedBooks[i].title,
});
// this doesn't work and returns nothing
const test2 = _.find(existingBooks, {
'author.name': uploadedBooks[i].author.name,
});
I want to get the result wherein the author.name is the identifier. Thanks a lot.
javascript lodash
asked Jul 26 '18 at 11:23
WoppiWoppi
2,46843059
add a comment |
-1
I'm trying to figure out how to extract result based on an object property value that is inside another object e.g
{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Here are my tests:
// this works
const test1 = _.find(existingBooks, {
title: uploadedBooks[i].title,
});
// this doesn't work and returns nothing
const test2 = _.find(existingBooks, {
'author.name': uploadedBooks[i].author.name,
});
I want to get the result wherein the author.name is the identifier. Thanks a lot.
javascript lodash
asked Jul 26 '18 at 11:23
WoppiWoppi
2,46843059
add a comment |
-1
-1
-1
I'm trying to figure out how to extract result based on an object property value that is inside another object e.g
{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Here are my tests:
// this works
const test1 = _.find(existingBooks, {
title: uploadedBooks[i].title,
});
// this doesn't work and returns nothing
const test2 = _.find(existingBooks, {
'author.name': uploadedBooks[i].author.name,
});
I want to get the result wherein the author.name is the identifier. Thanks a lot.
javascript lodash
asked Jul 26 '18 at 11:23
WoppiWoppi
2,46843059
I'm trying to figure out how to extract result based on an object property value that is inside another object e.g
{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Here are my tests:
// this works
const test1 = _.find(existingBooks, {
title: uploadedBooks[i].title,
});
// this doesn't work and returns nothing
const test2 = _.find(existingBooks, {
'author.name': uploadedBooks[i].author.name,
});
I want to get the result wherein the author.name is the identifier. Thanks a lot.
javascript lodash
javascript lodash
asked Jul 26 '18 at 11:23
WoppiWoppi
2,46843059
asked Jul 26 '18 at 11:23
WoppiWoppi
2,46843059
asked Jul 26 '18 at 11:23
WoppiWoppi
2,46843059
asked Jul 26 '18 at 11:23
WoppiWoppi
2,46843059
asked Jul 26 '18 at 11:23
WoppiWoppi
2,46843059
2,46843059
add a comment |
add a comment |
5 Answers
5
active
oldest
votes
2
As you are using Lodash/Underscore find, I took the liberty to also use the get helper. Please find below an answer which should help you.
const books = [{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
},
{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}
];
const uploadedBooks = [{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}];
const i = 0;
const foundBook = _.find(books, (book, index) => {
return _.get(book, 'author.name') === _.get(uploadedBooks, [i, 'author', 'name'])
});
console.log(foundBook);<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>answered Jul 26 '18 at 12:23
ChrisRChrisR
2,2541517
add a comment |
3
You can Use below code to iterate your json object.
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Jul 26 '18 at 11:34
Kiran GhatageKiran Ghatage
253713
1
Thanks a lot. It also worked. However, I went ahead with ` existingBooks.find((book) => { const { author: { name } } = book; return name === uploadedBooks[i].author.name; });` and did not use lodash for this after finding out about javascript'sfind:)
– Woppi
Jul 26 '18 at 11:41
add a comment |
2
It's possible to add dynamically named properties to JavaScript objects.
Assuming you are looping an array and not an object:
var a = _.map(existingBooksArray, function(existingBook) {
return {[existingBook.author.name]: existingBook.title}
});
Result of a:
[
{
Merlin Bridge: "The Book"
}
]
answered Jul 26 '18 at 11:39
shmotamshmotam
6892719
@ thanks, this solution also worked but my use-case is more of find than map since I'm not transforming anything. :) medium.com/@JeffLombardJr/…
– Woppi
Jul 26 '18 at 11:48
add a comment |
1
use .key method
Object.keys(myObj).forEach(key => {
console.log(myObj[key]);});
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 16 '18 at 6:08
Pooja NandnikarPooja Nandnikar
124
add a comment |
0
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 14 '18 at 12:20
vizviz
417
add a comment |
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5 Answers
5
active
oldest
votes
5 Answers
5
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
As you are using Lodash/Underscore find, I took the liberty to also use the get helper. Please find below an answer which should help you.
const books = [{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
},
{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}
];
const uploadedBooks = [{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}];
const i = 0;
const foundBook = _.find(books, (book, index) => {
return _.get(book, 'author.name') === _.get(uploadedBooks, [i, 'author', 'name'])
});
console.log(foundBook);<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>answered Jul 26 '18 at 12:23
ChrisRChrisR
2,2541517
add a comment |
2
As you are using Lodash/Underscore find, I took the liberty to also use the get helper. Please find below an answer which should help you.
const books = [{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
},
{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}
];
const uploadedBooks = [{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}];
const i = 0;
const foundBook = _.find(books, (book, index) => {
return _.get(book, 'author.name') === _.get(uploadedBooks, [i, 'author', 'name'])
});
console.log(foundBook);<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>answered Jul 26 '18 at 12:23
ChrisRChrisR
2,2541517
add a comment |
2
2
2
As you are using Lodash/Underscore find, I took the liberty to also use the get helper. Please find below an answer which should help you.
const books = [{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
},
{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}
];
const uploadedBooks = [{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}];
const i = 0;
const foundBook = _.find(books, (book, index) => {
return _.get(book, 'author.name') === _.get(uploadedBooks, [i, 'author', 'name'])
});
console.log(foundBook);<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>answered Jul 26 '18 at 12:23
ChrisRChrisR
2,2541517
As you are using Lodash/Underscore find, I took the liberty to also use the get helper. Please find below an answer which should help you.
const books = [{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
},
{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}
];
const uploadedBooks = [{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}];
const i = 0;
const foundBook = _.find(books, (book, index) => {
return _.get(book, 'author.name') === _.get(uploadedBooks, [i, 'author', 'name'])
});
console.log(foundBook);<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>const books = [{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
},
{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}
];
const uploadedBooks = [{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}];
const i = 0;
const foundBook = _.find(books, (book, index) => {
return _.get(book, 'author.name') === _.get(uploadedBooks, [i, 'author', 'name'])
});
console.log(foundBook);<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>const books = [{
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
},
{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}
];
const uploadedBooks = [{
title: 'Another Book',
author: {
name: 'Merlin Window',
category: 'Science'
}
}];
const i = 0;
const foundBook = _.find(books, (book, index) => {
return _.get(book, 'author.name') === _.get(uploadedBooks, [i, 'author', 'name'])
});
console.log(foundBook);<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>answered Jul 26 '18 at 12:23
ChrisRChrisR
2,2541517
answered Jul 26 '18 at 12:23
ChrisRChrisR
2,2541517
answered Jul 26 '18 at 12:23
ChrisRChrisR
2,2541517
answered Jul 26 '18 at 12:23
ChrisRChrisR
2,2541517
2,2541517
add a comment |
add a comment |
3
You can Use below code to iterate your json object.
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Jul 26 '18 at 11:34
Kiran GhatageKiran Ghatage
253713
1
Thanks a lot. It also worked. However, I went ahead with ` existingBooks.find((book) => { const { author: { name } } = book; return name === uploadedBooks[i].author.name; });` and did not use lodash for this after finding out about javascript'sfind:)
– Woppi
Jul 26 '18 at 11:41
add a comment |
3
You can Use below code to iterate your json object.
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Jul 26 '18 at 11:34
Kiran GhatageKiran Ghatage
253713
1
Thanks a lot. It also worked. However, I went ahead with ` existingBooks.find((book) => { const { author: { name } } = book; return name === uploadedBooks[i].author.name; });` and did not use lodash for this after finding out about javascript'sfind:)
– Woppi
Jul 26 '18 at 11:41
add a comment |
3
3
3
You can Use below code to iterate your json object.
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Jul 26 '18 at 11:34
Kiran GhatageKiran Ghatage
253713
You can Use below code to iterate your json object.
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Jul 26 '18 at 11:34
Kiran GhatageKiran Ghatage
253713
answered Jul 26 '18 at 11:34
Kiran GhatageKiran Ghatage
253713
answered Jul 26 '18 at 11:34
Kiran GhatageKiran Ghatage
253713
answered Jul 26 '18 at 11:34
Kiran GhatageKiran Ghatage
253713
253713
1
Thanks a lot. It also worked. However, I went ahead with ` existingBooks.find((book) => { const { author: { name } } = book; return name === uploadedBooks[i].author.name; });` and did not use lodash for this after finding out about javascript'sfind:)
– Woppi
Jul 26 '18 at 11:41
add a comment |
1
Thanks a lot. It also worked. However, I went ahead with ` existingBooks.find((book) => { const { author: { name } } = book; return name === uploadedBooks[i].author.name; });` and did not use lodash for this after finding out about javascript'sfind:)
– Woppi
Jul 26 '18 at 11:41
1
1
Thanks a lot. It also worked. However, I went ahead with ` existingBooks.find((book) => { const { author: { name } } = book; return name === uploadedBooks[i].author.name; });` and did not use lodash for this after finding out about javascript's
find :)– Woppi
Jul 26 '18 at 11:41
Thanks a lot. It also worked. However, I went ahead with ` existingBooks.find((book) => { const { author: { name } } = book; return name === uploadedBooks[i].author.name; });` and did not use lodash for this after finding out about javascript's
find :)– Woppi
Jul 26 '18 at 11:41
add a comment |
2
It's possible to add dynamically named properties to JavaScript objects.
Assuming you are looping an array and not an object:
var a = _.map(existingBooksArray, function(existingBook) {
return {[existingBook.author.name]: existingBook.title}
});
Result of a:
[
{
Merlin Bridge: "The Book"
}
]
answered Jul 26 '18 at 11:39
shmotamshmotam
6892719
@ thanks, this solution also worked but my use-case is more of find than map since I'm not transforming anything. :) medium.com/@JeffLombardJr/…
– Woppi
Jul 26 '18 at 11:48
add a comment |
2
It's possible to add dynamically named properties to JavaScript objects.
Assuming you are looping an array and not an object:
var a = _.map(existingBooksArray, function(existingBook) {
return {[existingBook.author.name]: existingBook.title}
});
Result of a:
[
{
Merlin Bridge: "The Book"
}
]
answered Jul 26 '18 at 11:39
shmotamshmotam
6892719
@ thanks, this solution also worked but my use-case is more of find than map since I'm not transforming anything. :) medium.com/@JeffLombardJr/…
– Woppi
Jul 26 '18 at 11:48
add a comment |
2
2
2
It's possible to add dynamically named properties to JavaScript objects.
Assuming you are looping an array and not an object:
var a = _.map(existingBooksArray, function(existingBook) {
return {[existingBook.author.name]: existingBook.title}
});
Result of a:
[
{
Merlin Bridge: "The Book"
}
]
answered Jul 26 '18 at 11:39
shmotamshmotam
6892719
It's possible to add dynamically named properties to JavaScript objects.
Assuming you are looping an array and not an object:
var a = _.map(existingBooksArray, function(existingBook) {
return {[existingBook.author.name]: existingBook.title}
});
Result of a:
[
{
Merlin Bridge: "The Book"
}
]
answered Jul 26 '18 at 11:39
shmotamshmotam
6892719
answered Jul 26 '18 at 11:39
shmotamshmotam
6892719
answered Jul 26 '18 at 11:39
shmotamshmotam
6892719
answered Jul 26 '18 at 11:39
shmotamshmotam
6892719
6892719
@ thanks, this solution also worked but my use-case is more of find than map since I'm not transforming anything. :) medium.com/@JeffLombardJr/…
– Woppi
Jul 26 '18 at 11:48
add a comment |
@ thanks, this solution also worked but my use-case is more of find than map since I'm not transforming anything. :) medium.com/@JeffLombardJr/…
– Woppi
Jul 26 '18 at 11:48
@ thanks, this solution also worked but my use-case is more of find than map since I'm not transforming anything. :) medium.com/@JeffLombardJr/…
– Woppi
Jul 26 '18 at 11:48
@ thanks, this solution also worked but my use-case is more of find than map since I'm not transforming anything. :) medium.com/@JeffLombardJr/…
– Woppi
Jul 26 '18 at 11:48
add a comment |
1
use .key method
Object.keys(myObj).forEach(key => {
console.log(myObj[key]);});
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 16 '18 at 6:08
Pooja NandnikarPooja Nandnikar
124
add a comment |
1
use .key method
Object.keys(myObj).forEach(key => {
console.log(myObj[key]);});
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 16 '18 at 6:08
Pooja NandnikarPooja Nandnikar
124
add a comment |
1
1
1
use .key method
Object.keys(myObj).forEach(key => {
console.log(myObj[key]);});
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 16 '18 at 6:08
Pooja NandnikarPooja Nandnikar
124
use .key method
Object.keys(myObj).forEach(key => {
console.log(myObj[key]);});
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 16 '18 at 6:08
Pooja NandnikarPooja Nandnikar
124
edited Dec 24 '18 at 7:01
answered Nov 16 '18 at 6:08
Pooja NandnikarPooja Nandnikar
124
answered Nov 16 '18 at 6:08
Pooja NandnikarPooja Nandnikar
124
answered Nov 16 '18 at 6:08
Pooja NandnikarPooja Nandnikar
124
124
add a comment |
add a comment |
0
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 14 '18 at 12:20
vizviz
417
add a comment |
0
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 14 '18 at 12:20
vizviz
417
add a comment |
0
0
0
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 14 '18 at 12:20
vizviz
417
var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});var myObj = {
title: 'The Book',
author: {
name: 'Merlin Bridge',
category: 'Fiction'
}
}
Object.keys(myObj).forEach(key => {
console.log(JSON.stringify(myObj[key]));
});answered Nov 14 '18 at 12:20
vizviz
417
answered Nov 14 '18 at 12:20
vizviz
417
answered Nov 14 '18 at 12:20
vizviz
417
answered Nov 14 '18 at 12:20
vizviz
417
417
add a comment |
add a comment |
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