parseFloat314

parseFloat314 is a term used informally to describe the application of the JavaScript built‑in function parseFloat to the numeric value 314 or to strings that represent numbers close to 314. The function parseFloat parses a string and converts it into a floating‑point number that follows the IEEE 754 double‑precision format. When called as parseFloat("314") or parseFloat("314.159") the function returns 314 and 314.159 respectively, dropping any non‑numeric trailing characters after the first invalid character. For example, parseFloat("314abc") yields 314, whereas parseFloat("abc314") returns NaN because the string does not start with a numeric value.

The name “parseFloat314” sometimes appears in coding tutorials, unit tests, or coding challenges to demonstrate parsing behavior or to benchmark performance for a typical numeric constant. It highlights common pitfalls such as leading spaces, embedded commas, or locale‑specific decimal separators, all of which can alter the returned value. In JavaScript, parseFloat preserves the sign and handles hexadecimal prefixes, but it never interprets numbers in exponential form unless explicitly indicated, e.g., “1e3” gives 1000.

parseFloat313 (a variant used in some code comment circles) illustrates the idea that the function accepts decimal strings regardless of their length or precision, as long as the numeric part is valid. In short, parseFloat314 simply serves as a concise example of JavaScript’s string‑to‑floating‑point conversion mechanism.