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... in javascript

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CoderHomie answered on March 24, 2022 Popularity 10/10 Helpfulness 2/10

answer ... in javascript

related ?. in javascript

related ?? in javascript

... in javascript

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/*
The spread (...) syntax allows an iterable, such as an array or string, 
to be expanded in places where zero or more arguments (for function calls)
or elements (for array literals) are expected. In an object literal, the 
spread syntax enumerates the properties of an object and adds the 
key-value pairs to the object being created.

Spread syntax looks exactly like rest syntax. In a way, spread syntax is 
the opposite of rest syntax. Spread syntax "expands" an array into its 
elements, while rest syntax collects multiple elements and "condenses" 
them into a single element.
*/

function sum(x, y, z) {
  return x + y + z;
}

const numbers = [1, 2, 3];

console.log(sum(...numbers));
// Expected output: 6

console.log(sum.apply(null, numbers));
// Expected output: 6

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: developer.mozilla.org

Tags: javascript

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Contributed on Apr 02 2023

CoderHomie

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The optional chaining operator (?.) enables you to read the value of a
property located deep within a chain of connected objects without having
to check that each reference in the chain is valid.

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Mar 24 2022

correctYourPosture

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?? in javascript

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const arr = ['apple', 'banana', 'orange'];
const searchValue = 'banana';

if (arr.includes(searchValue)) {
  console.log('Value found in the array!');
} else {
  console.log('Value not found in the array.');
}

Popularity 10/10 Helpfulness 1/10 Language javascript

Source: Grepper

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Contributed on Sep 12 2023

YOU.com

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... in javascript

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