🔴runtime error

JS ⟩ error ⟩ rumtime

errors occurred at runtime (after compilation is complete successfully)

🔴 主題

• ⛔️ ReferenceError ⟩

  • cannot access 'xxx' before initialization❗️

  • 'xxx' is not defined❗️

• ⛔️ TypeError

  • 'xxx' is not a function❗️