Looking for advice on how to create a datepicker in HTML without relying on bootstrap or pre-built JavaScript and CSS. I am interested in learning the process from the ground up and understanding how developers have designed these tools.
I am specifically interested in creating a datepicker that appears beneath a text box when clicked, and automatically populates the selected date in the textbox with a default format. I want to practice this by implementing it for a birthday field.
Thank you in advance! :D