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JavaScript: Create a shallow clone of an object

JavaScript fundamental (ES6 Syntax): Exercise-146 with Solution

Write a JavaScript program to create a shallow clone of an object.

  • Use Object.assign() and an empty object ({}) to create a shallow clone of the original.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const shallowClone = obj => Object.assign({}, obj);
const a = { x: true, y: 1 };
const b = shallowClone(a);  

console.log(b);

Sample Output:

{"x":true,"y":1}

Pictorial Presentation:

JavaScript Fundamental: Create a shallow clone of an object.

Flowchart:

flowchart: Create a shallow clone of an object

Live Demo:

See the Pen javascript-basic-exercise-146-1 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

Returns an array of n-tuples of consecutive elements

Example:

const tips_arr = (n, arr) =>  n > arr.length ? [] : arr.slice(n - 1).map((v, i) =>[...arr.slice(i, i + n - 1), v]);
console.log(tips_arr(2, [1, 2, 3, 4, 5])); 
console.log(tips_arr(3, [1, 2, 3, 4, 5]));
console.log(tips_arr(5, [1, 2, 3, 4]));

Output:

[[1, 2], [2, 3], [3, 4], [4, 5]]
[[1, 2, 3], [2, 3, 4], [3, 4, 5]]
[]