andre/30-seconds-of-code
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2017-12-22 15:12:10 +00:00
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@ -2143,17 +2143,14 @@ const timeTaken = callback => {
Convert a float-point arithmetic to the [Decimal mark](https://en.wikipedia.org/wiki/Decimal_mark) form.
Use `toString()` to convert the float `num` to a string, then use regex to separate every three characters of the integer part with a comma.
Use [Ttemplate Literals](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals) to return joined parts.
```js
const toDecimalMark = (num) => {
let cleanNum = num.toString().split('').filter(n => '0123456789.'.includes(n)).join('')
let wholeNum = cleanNum.split('.')[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",")
let decNum = `.${cleanNum.split('.')[1]}`
return wholeNum + decNum;
let numberParts = num.toString().split('.')
return `${numberParts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ',')}.${numberParts[1]}`
}
// toDecimalMark(12305030388.9087) //-> '12,305,030,388.9087'
// toDecimalMark(123.889087e2) //-> '12,388.9087'
// toDecimalMark('12305abc030388.9087') // -> '12,305,030,388.9087'
```
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