Once the installation part is completed we can move on to creating a Hello World web part, For creating a new project using the below command –

• md helloworld-webpart

Then move into the newly created directory with the command mentioned below –

• cd helloworld-webpart

Now we can create the HelloWorld web part by running the Yeoman SharePoint Generator with the below command –

• yo @microsoft/sharepoint

Now it will ask for the few sets of questions like –

• Project/Solution information –
  • Accept the default as your solution name, Hit Enter.
  • From dropdown select the SharePoint Online only (latest), Hit Enter.
  • We can opt for the Files to be placed in which folder current or subfolder, for now, we will use the current Folder.
  • Enter N to allow the solution to be deployed to all sites immediately
  • Enter N on the questions for if the solution contains unique permissions.
  • From the dropdown select the WebPart as the client-side component to be created.
• WebPart information –
  • Select the default HelloWorld as the web part name, Hit Enter.
  • Select the default HelloWorld description as web part description, Hit Enter.
  • From the dropdown select the No Javascript Web Framework as the framework would like to be used in the web part and Hit Enter.

The whole process will look like the below screenshot –