toFixed() dynamically in js

Question

let a = 2.0123456789;
let b = 10;
let c = 7.000123456;
let d = 4.10002345;
a.toFixed(2); // "2.01"  // It's fine.
b.toFixed(2); // "10.00" // It should be "10"
c.toFixed(2); // "7.00"  // It should be "7"
d.toFixed(2); // "4.10"  // It should be "4.1"

I have no idea how do I cut the number dynamically.

What do you mean "dynamically?" Just pass to `toFixed()` any expression representing the number of digits you want. — kmoser, Jun 02 '20 at 07:48
`if(a % 1 === 0){ console.log(a.toFixed(0))}else{console.log(a.toFixed(2))} ` — bill.gates, Jun 02 '20 at 07:55
@Ifaruki, I think if you divide something by one. This rest will always be 0 :p Your code makes no sense — Wimanicesir, Jun 02 '20 at 07:56
@Wimanicesir well `console.log(2.01 % 1 === 0)` outputs false while `console.log(2 % 1 === 0)` outputs true — bill.gates, Jun 02 '20 at 07:59
Oh, in that case 2.10 will always give false and will not be correct — Wimanicesir, Jun 02 '20 at 08:26

score 3 · Accepted Answer · answered Jun 02 '20 at 07:52

If you convert it to number, this will happen automatically.

let a = 2.0123456789;
let b = 10;
let c = 7.000123456;
let d = 4.10002345;

console.log(Number(a.toFixed(2)));
console.log(Number(b.toFixed(2)));
console.log(Number(c.toFixed(2)));
console.log(Number(d.toFixed(2)));

toFixed() dynamically in js

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