I have the following JavaScript syntax: var discount = Math.round(100 - (price / listprice) * 100); This rounds up to the whole number. How can I return the result with two decimal places?

The actual one-liner is 'Math.round (number)'. The whole type casting business is unnecessary. In JavaScript strings are automatically coerced to numbers when needed.

I'd like to round at most two decimal places, but only if necessary. Input: 10 1.7777777 9.1 Output: 10 1.78 9.1 How can I do this in JavaScript?

possible duplicate of round number in JavaScript to N decimal places -- please use the search before you ask a new question.

Can you round a number in JavaScript to one character after the decimal point (properly rounded)? I tried the *10, round, /10, but it leaves two decimals at the end of the int.

So it doesn't round a number to N decimals, it creates a string that humans can read as a number with decimals. But ony if they, by accident, use the same sign for decimals. use parseFloat …

Jul 24, 2019 · So to be clear, Math.round is only an issue when used with Math.random? I see Math.floor preferred often even when Math.random isn't used, in cases where I presume Math.round …

This works great, but the OP asked how to round up a number, so Math.ceil should be used here instead of Math.round.

May 26, 2011 · Round the number with 2 decimal points, then make sure to parse it with parseFloat() to return Number, not String unless you don't care if it is String or Number.

Jul 21, 2023 · Necesito que cuando el resultado de la función sea un número entero, como por ejemplo, 19.986, se redondee a 20.000 directamente. He probado con Math.round() y también con toFixed() …