Autor: 25.01.2024
Unexpected Token - What Does It Mean?
You're probably learning to program in some popular language like JavaScript, Python, Java, C#, C++, etc. And suddenly, after running the program, you encounter an error: Unexpected token. Don't worry! We'll explain everything shortly.
Syntax error? - Most likely!
This error indicates that the program has encountered an element that is inconsistent with expectations, usually a syntax error. Most likely, while writing the code, you made a typo or forgot to add something.
Typical causes
Beginner programmers often make mistakes such as:
- Unclosed parentheses
- Typos in names, e.g., "fnction" instead of "function,"
- Missing a dot or another important symbol used in the language,
- Incorrect use of operators, e.g., using "=" instead of "==" when comparing values,
- Missing a semicolon at the end of the line (if required in the language),
- Incorrect use of quotation marks or apostrophes (e.g., lack of closure).
- Everything depends on the language you are programming in. Each language has its own set of syntax rules, and you must strictly adhere to them while writing code.
How to find the cause of the error
There is no one universal way to find the cause of Unexpected Token errors. They are often caused by simple oversight. Start with the following list.
- Check the syntax carefully. Analyze parentheses to ensure they are closed correctly. Check if there is no missing semicolon or dot.
- Examine the error message. Sometimes you can find the line number where the error occurred.
- Use code debugging tools. Some development environments and editors can effectively analyze your code and suggest what error occurred.
Since Unexpected Token errors are often caused by the programmer, there is no other option but to find the cause yourself. Experience is crucial. The more code you write, the fewer syntax errors you will make. Good luck!
