Life calculator was writed by JS and HTML, it could calculate how many years and days that you have lived in your life
I writed two bugs in this Mini program
When I set the input's type into number, maxlength didn't work as I expected, users could type anything without length limitation
I wanted to add a typing effet into the page's character, I writed a funtion that could rechive this, when I entered character the second time, it didn't work as I expected.
delete function, typing effect was redundant, not simple, less is more.
Now you can see what this little program looks like. Maybe a little ugly, I'll fix it later