toFixed (JavaScript)

JavaScript toFixed() Method – W3Schools

The toFixed() method converts a number into a string, keeping a specified number of decimals. Note: if the desired number of decimals are higher than the actual number, nulls are added to …

Try It Yourself · Js Number · JavaScript String Fixed() Method

Number.prototype.toFixed() – JavaScript – MDN Web Docs

toFixed() returns a string representation of numObj that does not use exponential notation and has exactly digits digits after the decimal place. The number is rounded if necessary, and the fractional part is padded with zeros if necessary so that it has the specified length.

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JavaScript Number toFixed() – Tutorials Point

JavaScript Number toFixed() – Learn Javascript in simple and easy steps. A beginner’s tutorial containing complete knowledge of Javascript Syntax Objects Embedding with HTML Validations Cookies Regular Expressions Literals Variables Loops Conditions.

How can I round a number in JavaScript? .toFixed() returns

someNumber = someNumber.toFixed(2) to this: someNumber = +someNumber.toFixed(2); However this will convert the number to a string and parse it again, which will have a significant impact on performance. If you care about performance or type safety, check the the other answers as well.

It returns a string because 0.1, and powers thereof (which are used to display decimal fractions), are not representable (at least not with full accuracy) in binary floating-point systems. For example, 0.1 is really 0.1000000000000000055511151231257827021181583404541015625, and 0.01 is really 0.01000000000000000020816681711721685132943093776702880859375. (Thanks to BigDecimal for proving my point. :-P) Therefore (absent a decimal floating point or rational number type), outputting it as a string is the only way to get it trimmed to exactly the precision required for display.Best answer · 95Number.prototype.toFixed is a function designed to format a number before printing it out. It’s from the family of toString , toExponential and toPrecision . To round a number, you would do this: someNumber = 42.008;
someNumber = Math.round( someNumber * 1e2 ) / 1e2;
someNumber === 42.01;

// if you need 3 digits, replace 1e2 with 1e3 etc.
. Or if you want a native-like function, here you are: Number.prototype.toFixedNumber = function(x, base){
var pow = Math.pow(base||10,x);
return +( Math.round(this*pow) / pow );
someNumber = 42.008;
someNumber = someNumber.toFixedNumber(2);
someNumber === 42.01;

//or even hexadecimal

someNumber = 0xAF309/256 //which is af3.09
someNumber = someNumber.toFixedNumber(1, 16);
someNumber.toString(16) === «af3.1»;
. Tho I don’t like jsperf that much, here’s a link with comparsion of the method using conversion (in other answers) and this one:
I’ve solved this problem by changing this: someNumber = someNumber.toFixed(2)
to this: someNumber = +someNumber.toFixed(2);
However this will convert the number to a string and parse it again, which will have a significant impact on performance. If you care about performance or type safety, check the the other answers as well.96
Why not use parseFloat ? var someNumber = 123.456;
someNumber = parseFloat(someNumber.toFixed(2));
//alerts number20
Of course it returns a string. If you wanted to round the numeric variable you’d use Math.round() instead. The point of toFixed is to format the number with a fixed number of decimal places for display to the user .13I solved it with converting it back to number using JavaScript’s Number() function var x = 2.2873424;
x = Number(x.toFixed(2));11
What would you expect it to return when it’s supposed to format a number ? If you have a number you can’t pretty much do anything with it because e.g. 2 == 2.0 == 2.00 etc. so it has to be a string.3You can simply use a ‘+’ to convert the result to a number. var x = 22.032423;
x = +x.toFixed(2); // x = 22.033
Because its primary use is displaying numbers? If you want to round numbers, use Math.round() with apropriate factors.1Here’s a slightly more functional version of the answer m93a provided. const toFixedNumber = (toFixTo = 2, base = 10) => num => {
const pow = Math.pow(base, toFixTo)
return +(Math.round(num * pow) / pow)

const oneNumber = 10.12323223

const result1 = toFixedNumber(2)(oneNumber) // 10.12
const result2 = toFixedNumber(3)(oneNumber) // 10.123

// or using pipeline-operator
const result3 = oneNumber |> toFixedNumber(2) // 10.120

javascript – broken toFixed implementation
Javascript toFixed function

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JavaScript | toFixed( ) Function – GeeksforGeeks

The toFixed() function in JavaScript is used to format a number using fixed-point notation. It can be used to format a number with a specific number of digits to the right of the decimal. The toFixed() function is used with a number as shown in above syntax using the ‘.’ operator. This function

Javascript toFixed function – Stack Overflow

I have a question regarding toFixed() function. If I have a float e.g. – 3.123123423 and 0. How can I output it to input box with toFixed(2) so the inputbox values would be 3.12 and 0. I mean if the

javascript – Difference between toFixed() and toPrecision

toFixed(n) provides n length after the decimal point; toPrecision(x) provides x total length. Ref at w3schools: toFixed and toPrecision EDIT: I learned a while back that w3schools isn’t exactly the best source, but I forgot about this answer until I saw kzh’s, uh, «enthusiastic» comment.

javascript – toFixed() replacement function – Stack Overflow

I have noticed that many people are having trouble with the toFixed() method in javascript. I, myself, had a website that was throwing fits in IE7 and FireFox 4.x. I finally found the problem was the toFixed() method. It seemed to return a string in some browsers and not in others – it seems to act unpredictably.

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toFixed: JavaScript number-to-string conversion

Question: When I convert numbers to strings, can I guarantee exactly n decimal places in the resultant string? Answer: The simplest way of converting a number variable to string is to concatenate the variable with an empty string. However, this conversion does not guarantee the number of decimal places in the string. If you want exactly n decimal places in the conversion result, use the

javascript – toFixed function in c# – Stack Overflow

in Javascript, the toFixed() method formats a number to use a specified number of trailing decimals. Here is toFixed method in javascript How can i write a same method in c#?

Javascript Number.toFixed() Method – Ben Nadel

While reading the book, Learning jQuery, I came across a Javascript method that I had never heard of. The .toFixed() method, which can only be called on numeric values, will return a string representation of the number with the given number of decimal places. For example, if you wanted to return a