JS Practice — Built-in Objects

Number.parseFloat() — leading/trailing whitespace ignored

📖 Usage Example

// Parse a string to a floating-point number
Number.parseFloat('3.14')      // → 3.14
Number.parseFloat('3.14abc')   // → 3.14 (stops at first non-numeric)
Number.parseFloat('abc')       // → NaN

Use Number.parseFloat() to convert a string to a decimal number, stopping at the first character that is not part of a valid number.

Number.parseFloat() — Whitespace

Leading and trailing whitespace is ignored.

Number.parseFloat('  2.5  ')  // → 2.5

💡 Hints (1)

• Leading whitespace is stripped before parsing.