RangeError

RangeError is thrown when a value is not in the expected range. This includes invalid array lengths, exceeding the maximum call stack size, and passing out-of-range numbers to methods.

Common causes

• Creating an array with invalid length (e.g., negative number)
• Infinite recursion causing stack overflow
• toFixed(), toPrecision() with out-of-range arguments
• Passing invalid values to Number methods
• String repeat() with negative or infinity count

How to fix it

• Validate numeric inputs before using them for array sizes
• Add base cases to recursive functions to prevent infinite recursion
• Clamp values to valid ranges before passing to methods
• Use iterative approaches instead of deep recursion
• Check Number.MAX_SAFE_INTEGER for large number operations

Example

// Error examples
new Array(-1);  // RangeError: Invalid array length

const num = 1.5;
num.toFixed(200);  // RangeError: toFixed() digits argument must be between 0 and 100

// Infinite recursion
function recurse() { recurse(); }
recurse();  // RangeError: Maximum call stack size exceeded

// Fix: validate array length
const len = Math.max(0, userInput);
new Array(len);

// Fix: add base case
function factorial(n) {
  if (n <= 1) return 1;
  return n * factorial(n - 1);
}

Related errors