javascript

SyntaxError: Duplicate parameter name

Duplicate parameter name not allowed

Fixes

1.Rename duplicate parameters
2.Use rest parameters
3.Remove duplicate in strict mode

SyntaxErrorruntimestrict-mode

Related Errors

javascript3 fixes

Cannot read property of undefined

Cannot read propert(y|ies) of undefined

•Add optional chaining (?.)
•Check if object exists before accessing

javascript3 fixes

Cannot read property of null

Cannot read propert(y|ies) of null

•Add null check before access
•Use optional chaining (?.)

javascript3 fixes

TypeError: X is not a function

is not a function

•Check spelling of method name
•Verify import is correct