Styjun

My employer wants me to do a work of 6 months in just 2 months

Random point on a sphere

Do any aircraft carry boats?

Tall red piece with coffee cup, phone and gas picture?

Why should I always enable compiler warnings?

Is English tonal for some words, like "permit"?

Insert str into larger str in the most pythonic way

Is there a star over my head?

Are programming languages necessary/useful for operations research practitioner?

Using the pipe operator ("|") when executing system commands

How can I maximize the impact of my charitable donations?

Writing a worded mathematical expression

How can I protect myself in case of a human attack like the murders of the hikers Jespersen and Ueland in Morocco?

Can I cast Sunbeam if both my hands are busy?

Long list of Hit and Get from sudo apt update

Who are the two thieves that appear the opening of Batman: TAS?

Are there any space probes or landers which regained communication after being lost?

Can I disable a battery powered device by reversing half of its batteries?

SCOTUS - Can Congress overrule Marbury v. Madison by statute?

A Little Riddle

I asked for a graduate student position from a professor. He replied "welcome". What does that mean?

Do Milankovitch Cycles fully explain climate change?

How do I politely hint customers to leave my store, without pretending to need leave store myself?

How do email clients "send later" without storing a password?

How to check if a key is empty or not in an array of objects? [duplicate]

How do I check if all elements of an array are null?Check if all elements satisfy a conditionHow do I check if an element is hidden in jQuery?How do I remove a property from a JavaScript object?How do I check if an array includes an object in JavaScript?How to append something to an array?Checking if a key exists in a JavaScript object?How do I empty an array in JavaScript?How to check whether a string contains a substring in JavaScript?How to check if an object is an array?How do I remove a particular element from an array in JavaScript?For-each over an array in JavaScript?

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

1

1

This question already has an answer here:

• 
  How do I check if all elements of an array are null?
  
  3 answers
  
  

I am doing react native application. And I am getting json response like below.

[
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
]

I have to check all the value properties are empty or not. If all are empty, I have to do some action else condition other action.

 const emptyValues = sortedData.map(value => value.key);
 console.log('emptyValues data', emptyValues);

javascript arrays react-native

share|improve this question

edited Mar 28 at 9:43

adiga

20.6k77 gold badges3030 silver badges5252 bronze badges

asked Mar 28 at 9:02

Anilkumar iOS ReactNativeAnilkumar iOS ReactNative

1,28022 gold badges1818 silver badges4646 bronze badges

marked as duplicate by Rajesh javascript
Users with the  javascript badge can single-handedly close javascript questions as duplicates and reopen them as needed.

StackExchange.ready(function()
if (StackExchange.options.isMobile) return;

$('.dupe-hammer-message-hover:not(.hover-bound)').each(function()
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');

$hover.hover(
function()
$hover.showInfoMessage('',
messageElement: $msg.clone().show(),
transient: false,
position: my: 'bottom left', at: 'top center', offsetTop: -7 ,
dismissable: false,
relativeToBody: true
);
,
function()
StackExchange.helpers.removeMessages();

);
);
);
Mar 28 at 9:24

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Note: I'm aware linked question checks for null and this post asks for empty values. However, the logic is same and approaches defined addresses solution for it
  
  – Rajesh
  Mar 28 at 9:25
  

  
  
  
  

add a comment | 

1

1

This question already has an answer here:

• 
  How do I check if all elements of an array are null?
  
  3 answers
  
  

I am doing react native application. And I am getting json response like below.

[
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
]

I have to check all the value properties are empty or not. If all are empty, I have to do some action else condition other action.

 const emptyValues = sortedData.map(value => value.key);
 console.log('emptyValues data', emptyValues);

javascript arrays react-native

share|improve this question

edited Mar 28 at 9:43

adiga

20.6k77 gold badges3030 silver badges5252 bronze badges

asked Mar 28 at 9:02

Anilkumar iOS ReactNativeAnilkumar iOS ReactNative

1,28022 gold badges1818 silver badges4646 bronze badges

marked as duplicate by Rajesh javascript
Users with the  javascript badge can single-handedly close javascript questions as duplicates and reopen them as needed.

StackExchange.ready(function()
if (StackExchange.options.isMobile) return;

$('.dupe-hammer-message-hover:not(.hover-bound)').each(function()
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');

$hover.hover(
function()
$hover.showInfoMessage('',
messageElement: $msg.clone().show(),
transient: false,
position: my: 'bottom left', at: 'top center', offsetTop: -7 ,
dismissable: false,
relativeToBody: true
);
,
function()
StackExchange.helpers.removeMessages();

);
);
);
Mar 28 at 9:24

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Note: I'm aware linked question checks for null and this post asks for empty values. However, the logic is same and approaches defined addresses solution for it
  
  – Rajesh
  Mar 28 at 9:25
  

  
  
  
  

add a comment | 

This question already has an answer here:

• 
  How do I check if all elements of an array are null?
  
  3 answers
  
  

I am doing react native application. And I am getting json response like below.

[
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
]

I have to check all the value properties are empty or not. If all are empty, I have to do some action else condition other action.

 const emptyValues = sortedData.map(value => value.key);
 console.log('emptyValues data', emptyValues);

javascript arrays react-native

share|improve this question

edited Mar 28 at 9:43

adiga

20.6k77 gold badges3030 silver badges5252 bronze badges

asked Mar 28 at 9:02

Anilkumar iOS ReactNativeAnilkumar iOS ReactNative

1,28022 gold badges1818 silver badges4646 bronze badges

[
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
]

 const emptyValues = sortedData.map(value => value.key);
 console.log('emptyValues data', emptyValues);

share|improve this question

edited Mar 28 at 9:43

adiga

20.6k77 gold badges3030 silver badges5252 bronze badges

asked Mar 28 at 9:02

Anilkumar iOS ReactNativeAnilkumar iOS ReactNative

1,28022 gold badges1818 silver badges4646 bronze badges

share|improve this question

edited Mar 28 at 9:43

adiga

20.6k77 gold badges3030 silver badges5252 bronze badges

asked Mar 28 at 9:02

Anilkumar iOS ReactNativeAnilkumar iOS ReactNative

1,28022 gold badges1818 silver badges4646 bronze badges

edited Mar 28 at 9:43

adiga

20.6k77 gold badges3030 silver badges5252 bronze badges

edited Mar 28 at 9:43

adiga

20.6k77 gold badges3030 silver badges5252 bronze badges

asked Mar 28 at 9:02

Anilkumar iOS ReactNativeAnilkumar iOS ReactNative

1,28022 gold badges1818 silver badges4646 bronze badges

asked Mar 28 at 9:02

Anilkumar iOS ReactNativeAnilkumar iOS ReactNative

1,28022 gold badges1818 silver badges4646 bronze badges

2 Answers
2

active

oldest

votes

3

Use Array.every() to check if all value keys are '0' (or whatever your definition of empty is):

const data = ["id":"508","class":"class1","value":"0","percentage":"8.90","color":"black","id":"509","class":"class2","value":"0","percentage":"2.40","color":"black","id":"510","class":"class3","value":"0","percentage":"56.40","color":"black","id":"511","class":"class","value":"0","percentage":"2.40","color":"black"]

const doEmptyAction = data.every(o => o.value === '0')

console.log(doEmptyAction)

share|improve this answer

edited Mar 28 at 9:19

answered Mar 28 at 9:04

Ori DroriOri Drori

93.1k1616 gold badges108108 silver badges112112 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  My suggestion would be to have callback as o => isEmpty(o.value) and have a custom isEmpty function which would look like isEmpty = (value) => value === undefined || value === null || value === ''. We can also check for empty objects/arrays in it. So OP has do define their empty criteria
  
  – Rajesh
  Mar 28 at 9:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Will this returns true or false? And this will check all the indexes, right?
  
  – Anilkumar iOS ReactNative
  Mar 28 at 9:46
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But, Its always returning false? even the values are 0
  
  – Anilkumar iOS ReactNative
  Mar 28 at 9:49
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What is your definition of empty?
  
  – Ori Drori
  Mar 28 at 9:51
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes it will, but if it finds a non empty value, and will stop and return false. Ready the documentation of every in the link.
  
  – Ori Drori
  Mar 28 at 9:55
  

  
  
  
  

 | 
show 2 more comments

-1

let arr = [
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
];

let desiredVal = arr.map((obj) => 
 if(obj.value)
 //do something
 
);

share|improve this answer

answered Mar 28 at 9:17

Ankush RishiAnkush Rishi

1,05433 gold badges1414 silver badges4242 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Just a general suggestion, an answer is incomplete without explanation.
  
  – Rajesh
  Mar 28 at 9:30
  
  

  
  
  
  

add a comment | 

3

Use Array.every() to check if all value keys are '0' (or whatever your definition of empty is):

const data = ["id":"508","class":"class1","value":"0","percentage":"8.90","color":"black","id":"509","class":"class2","value":"0","percentage":"2.40","color":"black","id":"510","class":"class3","value":"0","percentage":"56.40","color":"black","id":"511","class":"class","value":"0","percentage":"2.40","color":"black"]

const doEmptyAction = data.every(o => o.value === '0')

console.log(doEmptyAction)

share|improve this answer

edited Mar 28 at 9:19

answered Mar 28 at 9:04

Ori DroriOri Drori

93.1k1616 gold badges108108 silver badges112112 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  My suggestion would be to have callback as o => isEmpty(o.value) and have a custom isEmpty function which would look like isEmpty = (value) => value === undefined || value === null || value === ''. We can also check for empty objects/arrays in it. So OP has do define their empty criteria
  
  – Rajesh
  Mar 28 at 9:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Will this returns true or false? And this will check all the indexes, right?
  
  – Anilkumar iOS ReactNative
  Mar 28 at 9:46
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But, Its always returning false? even the values are 0
  
  – Anilkumar iOS ReactNative
  Mar 28 at 9:49
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What is your definition of empty?
  
  – Ori Drori
  Mar 28 at 9:51
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes it will, but if it finds a non empty value, and will stop and return false. Ready the documentation of every in the link.
  
  – Ori Drori
  Mar 28 at 9:55
  

  
  
  
  

 | 
show 2 more comments

3

Use Array.every() to check if all value keys are '0' (or whatever your definition of empty is):

const data = ["id":"508","class":"class1","value":"0","percentage":"8.90","color":"black","id":"509","class":"class2","value":"0","percentage":"2.40","color":"black","id":"510","class":"class3","value":"0","percentage":"56.40","color":"black","id":"511","class":"class","value":"0","percentage":"2.40","color":"black"]

const doEmptyAction = data.every(o => o.value === '0')

console.log(doEmptyAction)

share|improve this answer

edited Mar 28 at 9:19

answered Mar 28 at 9:04

Ori DroriOri Drori

93.1k1616 gold badges108108 silver badges112112 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  My suggestion would be to have callback as o => isEmpty(o.value) and have a custom isEmpty function which would look like isEmpty = (value) => value === undefined || value === null || value === ''. We can also check for empty objects/arrays in it. So OP has do define their empty criteria
  
  – Rajesh
  Mar 28 at 9:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Will this returns true or false? And this will check all the indexes, right?
  
  – Anilkumar iOS ReactNative
  Mar 28 at 9:46
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But, Its always returning false? even the values are 0
  
  – Anilkumar iOS ReactNative
  Mar 28 at 9:49
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What is your definition of empty?
  
  – Ori Drori
  Mar 28 at 9:51
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes it will, but if it finds a non empty value, and will stop and return false. Ready the documentation of every in the link.
  
  – Ori Drori
  Mar 28 at 9:55
  

  
  
  
  

 | 
show 2 more comments

Use Array.every() to check if all value keys are '0' (or whatever your definition of empty is):

const data = ["id":"508","class":"class1","value":"0","percentage":"8.90","color":"black","id":"509","class":"class2","value":"0","percentage":"2.40","color":"black","id":"510","class":"class3","value":"0","percentage":"56.40","color":"black","id":"511","class":"class","value":"0","percentage":"2.40","color":"black"]

const doEmptyAction = data.every(o => o.value === '0')

console.log(doEmptyAction)

share|improve this answer

edited Mar 28 at 9:19

answered Mar 28 at 9:04

Ori DroriOri Drori

93.1k1616 gold badges108108 silver badges112112 bronze badges

const data = ["id":"508","class":"class1","value":"0","percentage":"8.90","color":"black","id":"509","class":"class2","value":"0","percentage":"2.40","color":"black","id":"510","class":"class3","value":"0","percentage":"56.40","color":"black","id":"511","class":"class","value":"0","percentage":"2.40","color":"black"]

const doEmptyAction = data.every(o => o.value === '0')

console.log(doEmptyAction)

const data = ["id":"508","class":"class1","value":"0","percentage":"8.90","color":"black","id":"509","class":"class2","value":"0","percentage":"2.40","color":"black","id":"510","class":"class3","value":"0","percentage":"56.40","color":"black","id":"511","class":"class","value":"0","percentage":"2.40","color":"black"]

const doEmptyAction = data.every(o => o.value === '0')

console.log(doEmptyAction)

const data = ["id":"508","class":"class1","value":"0","percentage":"8.90","color":"black","id":"509","class":"class2","value":"0","percentage":"2.40","color":"black","id":"510","class":"class3","value":"0","percentage":"56.40","color":"black","id":"511","class":"class","value":"0","percentage":"2.40","color":"black"]

const doEmptyAction = data.every(o => o.value === '0')

console.log(doEmptyAction)

share|improve this answer

edited Mar 28 at 9:19

answered Mar 28 at 9:04

Ori DroriOri Drori

93.1k1616 gold badges108108 silver badges112112 bronze badges

answered Mar 28 at 9:04

Ori DroriOri Drori

93.1k1616 gold badges108108 silver badges112112 bronze badges

answered Mar 28 at 9:04

Ori DroriOri Drori

93.1k1616 gold badges108108 silver badges112112 bronze badges

-1

let arr = [
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
];

let desiredVal = arr.map((obj) => 
 if(obj.value)
 //do something
 
);

share|improve this answer

answered Mar 28 at 9:17

Ankush RishiAnkush Rishi

1,05433 gold badges1414 silver badges4242 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Just a general suggestion, an answer is incomplete without explanation.
  
  – Rajesh
  Mar 28 at 9:30
  
  

  
  
  
  

add a comment | 

-1

let arr = [
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
];

let desiredVal = arr.map((obj) => 
 if(obj.value)
 //do something
 
);

share|improve this answer

answered Mar 28 at 9:17

Ankush RishiAnkush Rishi

1,05433 gold badges1414 silver badges4242 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Just a general suggestion, an answer is incomplete without explanation.
  
  – Rajesh
  Mar 28 at 9:30
  
  

  
  
  
  

add a comment | 

let arr = [
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
];

let desiredVal = arr.map((obj) => 
 if(obj.value)
 //do something
 
);

share|improve this answer

answered Mar 28 at 9:17

Ankush RishiAnkush Rishi

1,05433 gold badges1414 silver badges4242 bronze badges

let arr = [
 
 id: '508',
 class: 'class1',
 value: '0',
 percentage: '8.90',
 color: 'black'
 ,
 
 id: '509',
 class: 'class2',
 value: '0',
 percentage: '2.40',
 color: 'black'
 ,
 
 id: '510',
 class: 'class3',
 value: '0',
 percentage: '56.40',
 color: 'black'
 ,
 
 id: '511',
 class: 'class',
 value: '0',
 percentage: '2.40',
 color: 'black'
 
];

let desiredVal = arr.map((obj) => 
 if(obj.value)
 //do something
 
);

share|improve this answer

answered Mar 28 at 9:17

Ankush RishiAnkush Rishi

1,05433 gold badges1414 silver badges4242 bronze badges

answered Mar 28 at 9:17

Ankush RishiAnkush Rishi

1,05433 gold badges1414 silver badges4242 bronze badges

answered Mar 28 at 9:17

Ankush RishiAnkush Rishi

1,05433 gold badges1414 silver badges4242 bronze badges