我需要创建一个“无限”的画布，并在其周围点缀文本框。
在Desmos网站上，就像这样：
https://www.desmos.com/calculator
I have not managed to implement it myself.
Question
Could anyone help me with this?
html javascript php canvas web
canvas ×1
html ×1
javascript ×1
php ×1
web ×1