const modifiedFile = new File([file], "_icon.jpg", { type: file.type });
const formData = new FormData();
formData.append("file", modifiedFile);
2024/02/29
javascript, join object array
objArray.map(obj=>obj.a).join(',')
- map
-join
yarn uninstall
yarn remove xxx
yarn add xxxx
2024/02/28
Docker not found when freshly installed on Mac
Docker not found when freshly installed on Mac
- Docker Desktop -> Settings -> Advanced -> Choose System, not User -> Click [Apply & restart]
2024/02/27
Arrow function vs Function declaration
- arrow function can not use this
- arrow function must be defined before use
- Function declaration can use new
spring boot test,spring context
- get value from application.yaml
- use environment
- use profile
- @component
- component scan
- initialize the component
- add it to spring application context
- can get the bean from application context
- @Component equals @Bean in a @Configuration
- can use @SpringBootTest to load spring application context