2 decimals in JavaScript with out regular expression and without rounding the numbers

Question

Can anyone give me the code for accepting only 2 decimals using JavaScript. Without regular expression and without jQuery. The number should not be round.

score 2 · Answer 1 · edited Jun 20 '20 at 09:12

2

To Fixed

use toFixed(2); for doing that

var num = 2.4;
alert(num.toFixed(2));  will alert 2.40

edited Jun 20 '20 at 09:12

Community

1
1

answered Mar 21 '14 at 10:49

Vinay Pratap Singh

9,193
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thanks , but wen iam using toFixed() method then number is rounding and iam getting the values dynamically(what is user entered). – SimSam Mar 21 '14 at 10:52
@SimSam give me some no's example, i am sure we can find an alternative – Vinay Pratap Singh Mar 21 '14 at 10:54

score 0 · Answer 2 · answered Mar 21 '14 at 10:51

0

Try with

parseFloat(Math.round(yourNum * 100) / 100).toFixed(2);

answered Mar 21 '14 at 10:51

Wundwin Born

3,279
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35

score 0 · Answer 3 · answered Mar 21 '14 at 10:52

0

try this one

 Math.round(num * 100) / 100

answered Mar 21 '14 at 10:52

chriz

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score 0 · Answer 4 · answered Mar 21 '14 at 10:58

The number should not be round.

Use Math.floor to round down and you can use Math.pow to generically set the number of digits.

function trimDP(x, i) {
    var e = Math.pow(10, i || 0);
    return Math.floor(e * x) / e;
}
trimDP(2.45991, 2); // 2.45

If you want this as a String, you need to use .toFixed(i) after so that it doesn't get rounded.

var x = trimDP(2.40001, 2); // 2.4
x.toString(2); // "2.40"

2 decimals in JavaScript with out regular expression and without rounding the numbers

4 Answers4

To Fixed

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