how to add a new element to a set in javascript

To add a new element to a set in JavaScript, you can use the add() method. Here's an example:

index.tsx
const mySet = new Set();
mySet.add('apple');
mySet.add('banana');
mySet.add('orange');

mySet.add('mango');

console.log(mySet); // Set { 'apple', 'banana', 'orange', 'mango' }
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In the example above, we create a new Set, add three initial elements using the add() method, and then add a fourth element ('mango') to the Set using the same method. Finally, we log the contents of the Set to the console to verify that the new element was added successfully.