toFixed() formats a number to a specified number of digits after the decimal point and returns a string. Used for prices, financial data, measurement display. Due to IEEE 754 float representation, (1.005).toFixed(2) may return "1.00" instead of "1.01" — this is a float limitation, not a function bug.

Available since ES3 (1999). Part of Number.prototype. Similar: toPrecision() for total significant digits, toExponential() for scientific notation.

• (1.005).toFixed(2) may give "1.00" — use Math.round(num * 100) / 100 for accuracy
• toFixed() returns a string — for arithmetic: +((1.23).toFixed(1))
• for finance consider decimal.js.