Question #26   Submitted by Answiki on 06/06/2020 at 04:31:33 PM UTC

How to iterate through JavaScript objects?

Answer   Submitted by Answiki on 09/02/2022 at 08:02:57 PM UTC

The best way to iterate through JavaScript object on modern browsers is:

  1. to convert the object into JS array
  2. then to iterate through the array.


Here is an example:

var myObject = { string: "example", integer: 12 };

Object.entries(myObject).forEach(function ([key, value]) {
   console.log(key, value)
});

The expected console output is:

string example
integer 12

For older browsers (before ES6), the only way to loop through JS objects is to use a for ... in loop:

for (var property in object) {
	// Skip loop if the property is from prototype
	if (object.hasOwnProperty(property)) {
    	// Do awesome stuff here
	}
}
When you loop through an object with the  for ... in  loop, you need to check if the property belongs to the object or to the prototype.


Log in or sign up to update this answer Login Signup
15 events in history
Answer by Answiki on 09/02/2022 at 08:02:57 PM

The best way to iterate through JavaScript object on modern browsers is:

  1. to convert the object into JS array
  2. then to iterate through the array.


Here is an example:

var myObject = { string: "example", integer: 12 };

Object.entries(myObject).forEach(function ([key, value]) {
   console.log(key, value)
});

The expected console output is:

string example
integer 12

For older browsers (before ES6), the only way to loop through JS objects is to use a for ... in loop:

for (var property in object) {
	// Skip loop if the property is from prototype
	if (object.hasOwnProperty(property)) {
    	// Do awesome stuff here
	}
}
When you loop through an object with the  for ... in  loop, you need to check if the property belongs to the object or to the prototype.


Answer by Answiki on 06/20/2020 at 04:12:31 AM

The best way to iterate through JavaScript object on modern browsers is:

  1. to convert the object into JS array
  2. then to iterate through the array.


Here is an example:

var myObject = { string: "example", integer: 12 };

Object.entries(myObject).forEach(function ([key, value]) {
   console.log(key, value)
});

The expected console output is:

string example
integer 12

For older browsers (before ES6), the only way to loop through JS objects is to use a for ... in loop:

for (var property in object) {
	// Skip loop if the property is from prototype
	if (object.hasOwnProperty(property)) {
    	// Do awesome stuff here
	}
}
When you loop through an object with the  for ... in  loop, you need to check if the property belongs to the object or the to the prototype.


Question by Answiki 06/12/2020 at 01:18:30 PM
Looping through JS objects?
Question by Answiki 06/12/2020 at 01:18:14 PM
How to loop through objects in JavaScript?
Question by Answiki 06/12/2020 at 01:18:00 PM
Looping through objects in JavaScript?
Question by Answiki 06/06/2020 at 04:31:33 PM
How to iterate through JavaScript objects?
Question by Answiki 06/06/2020 at 03:14:37 PM
How to iterate through JavaScript object?
Answer by Answiki on 06/06/2020 at 12:08:08 PM

The best way to iterate through JavaScript object on modern browser is:

  1. to convert the object into JS array
  2. then to iterate through the array.


Here is an example:

var myObject = { string: "example", integer: 12 };

Object.entries(myObject).forEach(function ([key, value]) {
   console.log(key, value)
});

The expected console output is:

string example
integer 12

For older browser (before ES6), the only way to loop through JS objects is to use a for ... in loop:

for (var property in object) {
	// Skip loop if the property is from prototype
	if (object.hasOwnProperty(property)) {
    	// Do awesome stuff here
	}
}
When you loop through an object with the  for ... in  loop, you need to check if the property belongs to the object or the to the prototype.


Answer by Answiki on 06/06/2020 at 12:07:37 PM

The best way to iterate through JavaScript object on modern browser is:

  1. to convert the object into JS array
  2. then to iterate through the array.


Here is an example:

var myObject = { string: "example", integer: 12 };

Object.entries(myObject).forEach(function ([key, value]) {
   console.log(key, value)
});

The expected console output is:

string example
integer 12

For older browser (before ES6), the only way to loop through JS objects is to use a for ... in loop:

for (var property in object) {
	// Skip loop if the property is from prototype
	if (object.hasOwnProperty(property)) {
    	// Do awesome stuff here
	}
}
When you loop through an object with the  for ... in  loop, you need to check if the property belongs to the object or the to the prototype.


Answer by Answiki on 05/20/2020 at 09:54:34 AM

The best way to iterate through JavaScript object is to convert the object into table with Object.keys(), Object.values() or Object.entries() before iterating through the table with Array.forEach().

  • Object.keys() returns an array of object keys [key]
  • Object.values() returns an array containing the object values [values]
  • Object.entries() returns an array containing the pairs keys and values [key, values]


Here is an example:

var myObject = { string: "example", integer: 12 };

Object.entries(myObject).forEach(function ([key, value]) {
   console.log(key, value)
});

The expected console output is:

string example
integer 12

Answer by Answiki on 05/20/2020 at 09:54:15 AM

The best way to iterate through JavaScript object is to convert the object into table with Object.keys(), Object.values() or Object.entries() before iterating through the table with Array.forEach().

  • Object.keys() returns an a rray of object keys [key]
  • Object.values() re turns an arr ay containing the object values [values]
  • Object.entries() retur n an array containing the pairs keys and values [key, values]


Here is an example:

var myObject = { string: "example", integer: 12 };

Object.entries(myObject).forEach(function ([key, value]) {
   console.log(key, value)
});

The expected console output is:

string example
integer 12

Answer by Answiki on 05/20/2020 at 09:53:53 AM

The best way to iterate through JavaScript object is to convert the object into table with Object.keys(), Object.values() or Object.entries() before iterating through the table with Array.forEach().

  • Object.keys() returns an a rray of object keys [key]
  • Object.values() re turns an arr ay containing the object values [values]
  • Object.entries() retur n an array containing the pairs keys and values [key, values]


Here is an example:

var obj = { string: "example", integer: 12 };

Object.entries(obj).forEach(function ([key, value]) {
   console.log(key, value)
});

The expected console output is:

string example
integer 12

Answer by Answiki on 05/03/2020 at 09:41:13 AM

The best way to iterate through JavaScript object is to convert the object into table with Object.keys() before iterating through the table with Array.forEach(). Here is an example:

var obj = { string: "example", integer: 12 };

Object.keys(obj).forEach(function(key) {
 	console.log(key, obj[key]);
});

The previous code should display in the console:

string example
integer 12

Question by Answiki 05/03/2020 at 09:41:03 AM
How to loop through a JavaScript object?
Answer by Answiki on 05/03/2020 at 09:40:52 AM

The best way to iterate through JavaScript object is to convert the object into table with Object.keys() before iterating through the table with Array.forEach(). Here is an example:


var obj = { string: "example", integer: 12 };

Object.keys(obj).forEach(function(key) {
 	console.log(key, obj[key]);
});

The previous code should display in the console:

string example
integer 12

# ID Query URL Count
Icons proudly provided by Friconix.