HTML

HTML Entity

https://developer.mozilla.org/en-US/docs/Glossary/Entity
https://oinam.github.io/entities/

< = < = < = \u003c

< &entity_name;
< &#entity_number; &#x开头16进制
\u003c Unicode

other

拖拽到a标签上，会触发a标签点击行为