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varifycode

 npm install varifycode --save-dev

Usage

- context: PropTypes.string,  
    define verification-code's range, defalut:'abcdefghjkmnpqrstuvwxyzABCDEFGHJKLMNPRSTUVWXYZ23456789'

- width: PropTypes.number,
- height: PropTypes.number,

- onChange: PropTypes.func.isRequired,
    make the parent get the generated code,

  ...
  <VarifyCode
    context={'abcdefghjkmnpqrstuvwxyzABCDEFGHJKLMNPRSTUVWXYZ23456789'}   //生成验证码的范围
    width={100} height={30} 
    onChange={(code) => console.log(code)}                      //父级获得验证码
    />