A JavaScript Set is a collection of unique values. Each value can only occur once in a Set. The values can be of any type, primitive values or objects.

The setItem() method sets the value of the specified Storage Object item. The setItem() method belongs to the Storage Object, which can be either a localStorage object or a sessionStorage …

Apr 2, 2025 · Set objects are collections of values. A value in the set may only occur once; it is unique in the set's collection. You can iterate through the elements of a set in insertion order.

Mar 5, 2025 · A Set in JavaScript is used to store a unique collection of items, meaning no duplicates are allowed. Sets internally use a hash table which makes search, insert and delete …

// Create a Set const letters = new Set(["a","b","c"]); // Get all Entries const myIterator = letters.entries(); // List all Entries let text = ""; for (const entry of myIterator) { text += entry;}

May 8, 2025 · The only way to "modify" a (primitive) item would be to remove it from the Set and then add the altered item.

May 6, 2013 · There are two methods you can use. for...of and forEach. Upon the spec from MDN, Set has a values method: The values () method returns a new Iterator object that …

Using a JavaScript function with the leaveCode number as a parameter, how do I select the appropriate option in the list? You can use this function: let element = …

It works by creating a Set from the array and then creating a new Set which is the union of the two (i.e. it contains elements which are in either or both of the initial Set and the Set created from …

Dec 3, 2011 · A set is data structure which allows storage of unique values of any type, whether this are primitive values or object references. A set can be declared using the ES6 built in set …