版本：1.5.3
- https://cdn.bootcss.com/signature_pad/1.5.3/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.5.3/signature_pad.min.js
版本：1.5.2
- https://cdn.bootcss.com/signature_pad/1.5.2/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.5.2/signature_pad.min.js
版本：1.5.1
- https://cdn.bootcss.com/signature_pad/1.5.1/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.5.1/signature_pad.min.js
版本：1.4.0
- https://cdn.bootcss.com/signature_pad/1.4.0/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.4.0/signature_pad.min.js
版本：1.3.6
- https://cdn.bootcss.com/signature_pad/1.3.6/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.3.6/signature_pad.min.js
版本：1.3.5
- https://cdn.bootcss.com/signature_pad/1.3.5/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.3.5/signature_pad.min.js
版本：1.3.4
- https://cdn.bootcss.com/signature_pad/1.3.4/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.3.4/signature_pad.min.js
版本：1.3.3
- https://cdn.bootcss.com/signature_pad/1.3.3/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.3.3/signature_pad.min.js
版本：1.3.2
- https://cdn.bootcss.com/signature_pad/1.3.2/signature_pad.js
- https://cdn.bootcss.com/signature_pad/1.3.2/signature_pad.min.js