We will start out with the simplest possible tasks involving a Set
. In this recipe, we'll take a look at how to add and delete items from a Set
using the respective instance methods.
This recipe assumes that you already have a workspace that allows you to create and run ES modules in your browser. If you don't, refer to the first two chapters.
- Open your command-line application, and navigate to your workspace.
- Create a new folder named
12-01-add-remove-from-set
. - Copy or create an
index.html
that loads and runs amain
function frommain.js
. - Create a
main.js
file that defines amain
function. In that function, create a newSet
instance, then add and remove a few items from it:
// main.js export function main() { const rocketSet = new Set(); rocketSet.add('US: Saturn V'); rocketSet.add('US: Saturn V'); rocketSet.add('US: Falcon Heavy'); console.log(rocketSet); rocketSet.delete('US: Falcon Heavy'); console...