Travis build: 43

README.md

@@ -150,6 +150,7 @@
 * [`isSymbol`](#issymbol)
 * [`RGBToHex`](#rgbtohex)
 * [`timeTaken`](#timetaken)
+* [`toDecimalMark`](#todecimalmark)
 * [`toOrdinalSuffix`](#toordinalsuffix)
 * [`UUIDGenerator`](#uuidgenerator)
 * [`validateEmail`](#validateemail)
@@ -2091,6 +2092,26 @@ const timeTaken = callback => {
 
 [⬆ back to top](#table-of-contents)
 
+### toDecimalMark
+
+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.
+
+ ```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;
+}
+// toDecimalMark(12305030388.9087) //-> '12,305,030,388.9087'
+// toDecimalMark(123.889087e2) //-> '12,388.9087'
+// toDecimalMark('12305abc030388.9087') // -> '12,305,030,388.9087'
+```
+
+[⬆ back to top](#table-of-contents)
+
 ### toOrdinalSuffix
 
 Adds an ordinal suffix to a number.