added key

3 years ago · 230c99f66c
parent 2b93d0abfe
commit 230c99f66c
1 changed files with 1 additions and 1 deletions
--- a/03_Day_Setting_Up/03_setting_up_boilerplate/src/index.js
+++ b/03_Day_Setting_Up/03_setting_up_boilerplate/src/index.js
@ -64,7 +64,7 @@ const personAge = (

 // JSX element, main
 const techs = ['HTML', 'CSS', 'JavaScript']
-const techsFormatted = techs.map((tech) => <li>{tech}</li>)
+const techsFormatted = techs.map((tech) => <li key={tech}>{tech}</li>)

 const user = (
  <div>