学习自定义块
视频学习:
https://developers.google.com/blockly/guides/create-custom-blocks/blockly-developer-tools?hl=zh-cn
自定义地址:
https://blockly-demo.appspot.com/static/demos/blockfactory/index.html?hl=zh-cn#24y7vk
例子
https://blockly-demo.appspot.com/static/demos/blockfactory/index.html?hl=zh-cn#x2swud