1.File——Settings——Build

2.Build,Execution,Deplyment——Compiler

3.选中打勾 “Build project automatically“

4.按OK
5. 按住 Shift+Ctrl+Alt+/ ,然后选中 Registry

6.勾选compiler.automake.allow.when.app.running

7.最后在需要刷新时点击下图所示的箭头,再在html页面刷新即可

具体见:https://blog.csdn.net/weixin_43234960/article/details/101368542