How do you round to 1 decimal place in Javascript?

Question

Can you round a number in javascript to 1 character after the decimal point (properly rounded)?

I tried the *10, round, /10 but it leaves two decimals at the end of

Answer 1

I made one that returns number type and also places decimals only if are needed (no 0 padding).

Examples:

roundWithMaxPrecision(11.234, 2); //11.23
roundWithMaxPrecision(11.234, 1); //11.2
roundWithMaxPrecision(11.234, 4); //11.23
roundWithMaxPrecision(11.234, -1); //10

roundWithMaxPrecision(4.2, 2); //4.2
roundWithMaxPrecision(4.88, 1); //4.9

The code:

function roundWithMaxPrecision (n, precision) {
    let precisionWithPow10 = Math.pow(10, precision);
    return Math.round(n * precisionWithPow10) / precisionWithPow10;
}