how do I retain the the zero at the end when I divide a number like 12330 by 100 in Javascript

Question

how do I divide 12330 by 100 to give me 123.30

trying 12330/100 in JS gives 123.3 but I want the 0 at the end to stay

also, I need the function to not give.00

so 100/100 should give 1 and not 1.00

tried using .toFixed(2) . but it only solved the first case and not the second.

Answer 1

use toFixed https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toFixed

 console.log( (12330 / 100).toFixed(2) );

here 2 means, the precision of float

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Attention: also when the number isn't a float it will do number.00 (in the most of cases this is good behavior)

but if isn't good for you, see the next edited answer...

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new edited answer

if the .00 gives you problems, use this:

% operator, https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Remainder

 function convert(value) { if (value % 1 === 0) { return value; } return value.toFixed(2); } // tests console.log(convert(12330 / 100)); // should return value with toFixed console.log(convert(100 / 100)); // should return 1 (no toFixed) console.log(convert(100 / 10)); // should return 10 (no toFixed)

for understanding more about the solution you can see this StackOverflow question on this topic How do I check that a number is float or integer?

Answer 2

There are several ways you could do this. @Laaouatni's answer is one example (and if you go with that one, make sure to mark that as the answer).

I'll give two others here.

Using string.prototype.slice :

const intermediate = value.toFixed(2);
const result = intermediate.endsWith(".00") ? intermediate.slice(0, -1) : intermediate; 

Using string.prototype.replace :

const result = value.toFixed(2).replace(".00", ".0");