Subsequently connecting to Puck seems to clear pin watch

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•

AkosLukacs in reply to @Fisu
I think you don't have to format the currentkWh on the puck.

Just use toFixed on the display page. For example:
```
var kwh = 1234.56789;
console.log(kwh.toFixed(2))
"1234.57"
```
Separation of data & display concerns :)

•

Robin in reply to @AkosLukacs
Sun 2019.08.11

You beat me to it toFixed() @AkosLukacs, as I was in the process of documenting a discovered anomaly while prepping my response.

Math.round() doesn't follow specification for exact 0.5

as a mod to your example will show
```
>var kwh = 1234.505;
>console.log(kwh.toFixed(2))
1234.50
```
Is this another anomaly but with toFixed()? (re: "The number is rounded if necessary" )

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

YES just posted

Number.toFixed() not rounding per specification

•

AkosLukacs in reply to @Robin
The result of toFixed looks like a number, because you console.log it, so there are no parenthesis around the printed value.
```
>var fixed = kwh.toFixed(2);
="1234.50"

>typeof fixed
="string"
```
And yes, looks like some rounding anomaly:
```
>2134.506.toFixed(2)
="2134.50"
>2134.507.toFixed(2)
="2134.51"
```

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