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js Set

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The O Programing Language answered on January 22, 2020 Popularity 10/10 Helpfulness 2/10

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js Set

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const id = new Set();

id.add(1);
id.add(2);
id.add(3);
id.add(3);// duplicate value will not be added
console.log(id);// output: Set {1, 2, 3}
id.delete(2);// delete the value 2 from the set
console.log(id);// output: Set {1, 3}
id.has(2);// check if the set has the value 2 // output: true
console.log(id);


//order is not guaranteed

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript set

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Contributed on Aug 16 2022

The O Programing Language

0 Answers Avg Quality 2/10

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set js

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// Use to remove duplicate elements from the array 

const numbers = [2,3,4,4,2,3,3,4,4,5,5,6,6,7,5,32,3,4,5]

//spreading numbers of the object into an array using the new operator
console.log([...new Set(numbers)]) 

// [2, 3, 4, 5, 6, 7, 32]

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Jan 22 2020

Happy Hyena

0 Answers Avg Quality 2/10

set in javascript

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let mySet = new Set()

mySet.add(1)           // Set [ 1 ]
mySet.add(5)           // Set [ 1, 5 ]
mySet.add(5)           // Set [ 1, 5 ]
mySet.add('some text') // Set [ 1, 5, 'some text' ]
let o = {a: 1, b: 2}
mySet.add(o)

mySet.add({a: 1, b: 2})   // o is referencing a different object, so this is okay

mySet.has(1)              // true
mySet.has(3)              // false, since 3 has not been added to the set
mySet.has(5)              // true
mySet.has(Math.sqrt(25))  // true
mySet.has('Some Text'.toLowerCase()) // true
mySet.has(o)       // true

mySet.size         // 5

mySet.delete(5)    // removes 5 from the set
mySet.has(5)       // false, 5 has been removed

mySet.size         // 4, since we just removed one value

console.log(mySet)
// logs Set(4) [ 1, "some text", {…}, {…} ] in Firefox
// logs Set(4) { 1, "some text", {…}, {…} } in Chrome

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Mar 19 2020

Yellowed Yak

0 Answers Avg Quality 2/10

javaScript new Set() Method

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// Create a Set
const letters = new Set(["a","b","c"]);

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 22 2022

naly moslih

0 Answers Avg Quality 2/10

set javascript

Comment

// Use to remove duplicate elements from the array 

const numbers = [2,3,4,4,2,3,3,4,4,5,5,6,6,7,5,32,3,4,5]

//spreading numbers of the object into an array using the new operator
console.log([...new Set(numbers)]) 

// [2, 3, 4, 5, 6, 7, 32]

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Sep 13 2022

Umar code solver

0 Answers Avg Quality 2/10

JavaScript Sets

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// Create a Set
const letters = new Set();

// Add Values to the Set
letters.add("a");
letters.add("b");
letters.add("c");

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 23 2022

naly moslih

0 Answers Avg Quality 2/10

js set

Comment

// Use to remove duplicate elements from the array 

const array = [2,3,4,4,2,3,3,4,4,5,5,6,6,7,5,32,3,4,5]

//spreading numbers of the object into an array using the new operator
console.log([...new Set(array)]) 

// [2, 3, 4, 5, 6, 7, 32]

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jun 17 2021

Light Lobster

0 Answers Avg Quality 2/10

set js

Comment

let text = 'India'

let mySet = new Set(text)  // Set ['I', 'n', 'd', 'i', 'a']
mySet.size  // 5

//case sensitive & duplicate ommision
new Set("Firefox")  // Set(7) [ "F", "i", "r", "e", "f", "o", "x" ]
new Set("firefox")  // Set(6) [ "f", "i", "r", "e", "o", "x" ]

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Jan 19 2021

Graceful Gibbon

0 Answers Avg Quality 2/10

set js

Comment

const myArray = ['value1', 'value2', 'value3'];

// Use the regular Set constructor to transform an Array into a Set
const mySet = new Set(myArray);

mySet.has('value1')     // returns true

// Use the spread syntax to transform a set into an Array.
console.log([...mySet]); // Will show you exactly the same Array as myArray

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Sep 30 2022

kuldip ramdham

0 Answers Avg Quality 2/10

set in javascript

Comment

const mySet1 = new Set()

mySet1.add(1)           // Set [ 1 ]
mySet1.add(5)           // Set [ 1, 5 ]
mySet1.add(5)           // Set [ 1, 5 ]
mySet1.add('some text') // Set [ 1, 5, 'some text' ]
const o = {a: 1, b: 2}
mySet1.add(o)

mySet1.add({a: 1, b: 2})   // o is referencing a different object, so this is okay

mySet1.has(1)              // true
mySet1.has(3)              // false, since 3 has not been added to the set
mySet1.has(5)              // true
mySet1.has(Math.sqrt(25))  // true
mySet1.has('Some Text'.toLowerCase()) // true
mySet1.has(o)       // true

mySet1.size         // 5

mySet1.delete(5)    // removes 5 from the set
mySet1.has(5)       // false, 5 has been removed

mySet1.size         // 4, since we just removed one value

mySet1.add(5)       // Set [1, 'some text', {...}, {...}, 5] - a previously deleted item will be added as a new item, it will not retain its original position before deletion

console.log(mySet1)
// logs Set(5) [ 1, "some text", {…}, {…}, 5 ] in Firefox
// logs Set(5) { 1, "some text", {…}, {…}, 5 } in Chrome

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Aug 02 2022

Better Badger

0 Answers Avg Quality 2/10

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