How to generate verification code in html5

Introduction to the idea:

You can use the canvas tag of html5 to generate a canvas first, and then use random numbers to generate verification codes on the canvas. The background uses random colors and messy straight lines. to replace.

(Learning video sharing:html5 video tutorial)

Advanced method:

Using form plug-in attributes to bind verification code data (json) can be Background data acquisition and inspection are performed during sending or asynchronous communication.

Specific code:

Related recommendations:html5 tutorial

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