Skip to main content

format_js_number

react_compiler_hir

Function format_js_number 

Source 
pub fn format_js_number(n: f64) -> String
Expand description

Format an f64 the way JavaScript’s Number.prototype.toString() does.

Key differences from Rust’s default Display:

  • Uses scientific notation for |x| >= 1e21 (e.g. 1e+21, 2.18739127891275e+22)
  • Uses scientific notation for 0 < |x| < 1e-6 (e.g. 1e-7, 1.5e-8)
  • Uses minimal significant digits that round-trip to the same f64
  • Formats -0 as “0”