inject节点: https://blog.csdn.net/geek_monkey/article/details/80737818
debug节点: https://blog.csdn.net/geek_monkey/article/details/80737969
switch节点: https://blog.csdn.net/geek_monkey/article/details/80738104
node-red inject节点 debug节点 switch节点
原文:https://www.cnblogs.com/zhzhlong/p/11506799.html