Before creating our first Angular app, first, we’ll see how to install Angular on a Windows system.
Step 1 - Install NodeJS
Follow the link - https://nodejs.org/en/download/
Download the node.js installer for Windows and install it.

To check the installed version of Node.js, open the command prompt.
Type the “npm -v” command to check the Node.js installation and version.

Step 2 - Install TypeScript
Open the link https://www.npmjs.com/package/typescript

Copy the above command “npm install -g typescript” and run it on command prompt.
Step 3 - Install Angular CLI (Angular command line interface)
Open the link https://cli.angular.io/ and follow the instructions to install Angular CLI and to create your first Angular app.

- Type the command “npm install -g @angular/cli” on the command prompt and press enter to install Angular cli.
- Type “ng new hello-world” and hit enter to create the Hello World app.
Once you see the message “Project ‘hello-world’” it means the app is created on the disk. - Now, type “cd hello-world” to get into the app directory or folder.
- Finally, the "Hello World" Angular app is created; now type “ng serve”.
Now, open the browser and type http://localhost:4200 in the address bar and hit enter to run the Hello World Angular app in the browser.

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