How to usespread Operator in Javascript
- Take the JavaScript array into a variable.
- Use the new keyword to create a new set and pass the JavaScript array as its first and only argument.
- This will automatically create the set of the provided array.
Example 1: In this example, the array is converted into a set using the spread operator defined above.
let A = [1, 1, 2, 2, 2, 2, 5, 5];
function GFG_Fun() {
let set = new Set(A);
console.log(JSON.stringify([...set]));
}
GFG_Fun();
Output
[1,2,5]
Example 2: In this example, the array is converted into a set using a bit approach than above.
let Arr = ["A", "A", "Computer Science", "portal",
"for", "for", "Geeks", "Geeks"];
function GFG_Fun() {
let set = new Set(Arr);
console.log(JSON.stringify([...set.keys()]));
}
GFG_Fun();
Output
["A","Computer Science","portal","for","Geeks"]
How to Convert Array to Set in JavaScript?
The goal is to transform a JavaScript Array into a Set using JavaScript’s built-in features. This process involves taking all the elements from the array and putting them into a Set, which is a data structure that only contains unique values. By doing this conversion, we can efficiently manage and operate on the array’s elements without worrying about duplicates.
Below are the approaches to Converting Array to a Set in JavaScript:
Table of Content
- Approach 1: Using spread Operator
- Approach 2: Using the Set Constructor
- Approach 3: Using the forEach Loop
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