JavaScript HTML5 Canvas to realize the _javascript skill of the disk draw function

We often participate in a variety of electric business concessions, such as the purchase to achieve a certain amount of lottery activities, such as micro-letter lottery, Taobao Lottery, thunder money, such as the Lottery raffle. These lottery activities are part of the HTML5 by the canvas to make, today for you to share how to use the HTML5 canvas to make a disk lottery function. As usual, look at the effect chart first:

Let's take a look at some of canvas's main APIs:

All source code is as follows:

<! DOCTYPE html>  

The above is the entire content of this article, I hope to help you learn.

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