Use canvas to create an online canvas and canvas to make an online canvas

Use canvas to create an online canvas and canvas to make an online canvas

The powerful functions of canvas plotting allow people to study it. A total of less than a hundred lines of code are added. <Input type = "color"/> and <input type = "range"/>

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This article uses only three events of the mouse, onmousedown onmousemove onmouseup, to easily create a web canvas.

Code:

1 <! DOCTYPE html> 2 
What we look like