Different tags can be used when making simple content in the browser but Tags become specific when making specific content on the website. like

input tag with type=number: helps the user to enter only numbers and restrict other parameters.

form tag: specially used for submitting form input data to another URL address. .

Script.js file

1 Adding script file in the head of HTML

when the browser opens it first execute the script file and load its data and after that, it gives permissions to the browser to load HTML content.

2 Adding script file at the end of the body in HTML file: The content of HTML loads first and after that script files loads in the browser which helps the user to see the content in the browser faster than earlier one.