JS Practice — Built-in Objects

Number.parseInt() — 'abc' returns NaN

📖 Usage Example

// Parse a string to an integer with optional base
Number.parseInt('42px')       // → 42
Number.parseInt('0xff', 16)   // → 255
Number.parseInt('10', 2)      // → 2

Use Number.parseInt() to convert a string to an integer, optionally specifying a radix for binary, octal, or hexadecimal input.

Number.parseInt() — NaN for Non-Numeric Strings

When the string cannot be parsed as an integer, NaN is returned.

💡 Hints (1)

• `parseInt` truncates at the decimal point and returns `NaN` for non-numeric leading characters.