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JavaScript: The Web Warrior Series 6th Edition

JavaScript: The Web Warrior Series (6th Edition)

Book Edition6th Edition
SubjectComputer Science
Introduction to Debugging
Using Basic Debugging Techniques
Short Quiz
Tracing Errors with Debugging Tools
Handling Exceptions and Errors
Additional Debugging Techniques
Chapter 4, Introduction to Debugging, Short Quiz, Exercise 1
Page 224

Explain the difference between syntax errors, run-time errors, and logic errors. Provide an example of each.


The difference between them is mentioned below.

Syntax errorRun-time errorLogical error
It occurs when the interpreter fails to recognize the code.It occurs when the interpreter fails to execute the code.It occurs when the code does not produce the correct output.
An error message is generated in this case.An error message saying the reason for error is displayed in this case.No error message is generated.
The program is not compiled successfully.The program is compiled successfully but it does not run to completion.The program runs to completion but the output produced is incorrect.

Sample Response

  • Syntax error arises when the Context-Free Grammar (CFG) associated with the programming language is not obeyed.
  • Run-time error arises when some exceptions occur during execution of code.
  • Logical error occurs when the program produces incorrect output.
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