This question already has answers here:
Round a float up to the next integer in javascript
(4 answers)
Closed 7 years ago.
<script>
Math.round(2.1);
</script>
i need round off like this
Actual Result.
2.1 round is 2
2.6 round is 3
Expect Result
2.1 round is 3
2.6 round is 3
You seem to want to round up, which is done using Math.ceil:
Math.ceil(2.1)
gives
3
You can Use ceil:
Math.ceil(2.1); // 3
Math.ceil(.95); // 1
Math.ceil(4); // 4
Math.ceil(7.004); // 8
The Math.ceil() function returns the smallest integer greater than or equal to a given number.
Docs: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/ceil
You need to use Math.ceil()
Ceil rounds up!
var value = Math.ceil(old_value);
Related
This question already has answers here:
Is floating point math broken?
(31 answers)
How to deal with floating point number precision in JavaScript?
(47 answers)
Closed 3 years ago.
When I run a “For” loop and I log the index used in it with increments of 0.1 , starting from 1, the outcome is not a number with a single decimal digit, but something with multiple decimal digits (code and results are shown here below).
for (let i = 1; i <= 2; i += 0.1) {
console.log(i);
};
What I expected is to see the following series:
1
1.1
1.2
1.3
...
instead what I actually get is:
1
1.1
1.2000000000000002
1.3000000000000003
1.4000000000000004
1.5000000000000004
1.6000000000000005
1.7000000000000006
1.8000000000000007
1.9000000000000008
This happens in every browser, in the same way either I compile the loop directly in the Console DOM or I code within Visual Studio Code.
Does anyone have an explanation about it?
Have you tried incrementing by 0.100000000000000?
Or using i = i.toFixed(1)? This will round the number to one decimal place. May not be what you need as toFixed will convert the number to a string
This question already has answers here:
Is floating point math broken?
(31 answers)
Closed 4 years ago.
var tm=110;
var fm=200;
var pr=Math.ceil(tm/fm*100);
console.log(pr);
The result is showing 56.
But it should be 55
Note that
tm/fm*100 is resulting 55.0000001
But
When tm=100 and all fm=200 then the result is 50
I've solved that problem concedering upto 2 decimal places after point, I could not understand where from 1 is comming after some 0s!
Math.ceil() returns the smallest integer greater than or equal to a given number. See MDN Documentation.
Remove Math.ceil()
parseFloat() pr variable
Call Float's precision method toPrecision(8)
The extra 1 you are seeing is a result of binary floating point math. JavaScript does this. Source
<script>
var tm=110;
var fm=200;
var pr= parseFloat(tm/fm*100);
alert(pr.toPrecision(8)); // output: 55.00000000
</script>
This question already has answers here:
How to round up a number in Javascript?
(10 answers)
Closed 4 years ago.
Currently have the following javascript code:
div.html( Drupal.t("Date")+": "+d.date+"</br>"+Drupal.t("Value")+": " + (d.value))
Value that i'm getting is 0.1651859999999985 . I wanna round it off to the first four decimal numbers. Any help? I tried Math.ceil(d.value*10)/10) but it was only getting the first decimal :( Any help? I wanna get 0.1652
Should be Math.ceil(d.value*10000)/10000
example:
console.log(Math.ceil(0.1683123*10000)/10000)
console.log(Math.ceil(823.124148336763*10000)/10000) // round up to the ceiling
console.log(Math.floor(823.124148336763*10000)/10000) // round down to the floor
console.log(Math.round(823.124148336763*10000)/10000) // below .5 -> down, above .5 -> up
This question already has answers here:
Format number to always show 2 decimal places
(37 answers)
Closed 8 years ago.
How can I make a flaoting point number always have two decimal places, even when one is a zero?
E.g var postageCost = 3.2 but I want to display it as 3.20 - is this something that must be added as a string or is it possible to actually change the number?
From Here, you can use
parseFloat(Math.round(postageCost * 100) / 100).toFixed(2);
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
javascript - ceiling of a dollar amount
I have a number like this: 360.654444444447
I want this to round up to 360.66
How do i do it? The amount of 4's between the 5 and 7 is unknown.
EDIT: The key issue here is that when the decimals after the 2nd would round to 5, it should round up. (ie: 360.654447 can be rounded to 360.655 - and that should round to 360.66
It's similar to the PHP_HALF_ROUND_MODE thing.
Use the ceil method, not the round method as others have suggested.
var number = 360.654444444447;
var result = Math.ceil(number * 100) / 100;