Side-by-side comparison of RangeError and SyntaxError — understand the differences, causes, and fixes.
AkousaRangeErrorA value is not within the expected range, such as an invalid array length or exceeding the call stack size.
A numeric value or other parameter is outside the set of allowed values. This includes passing negative numbers where positive is required, exceeding recursion limits, or using values outside precision bounds.
Validate inputs before passing them to functions. Add bounds checking for numeric values. If caused by recursion, add a base case or convert to iteration.
SyntaxErrorThe JavaScript engine encountered code that does not conform to the language syntax.
The code contains invalid syntax that the JavaScript parser cannot understand. This includes missing brackets, unmatched parentheses, invalid characters, or using language features not supported by the runtime.
Check the error message for the line and column number. Look for missing or extra brackets, parentheses, quotes, or semicolons. Use a linter like ESLint to catch syntax errors before runtime.