code-boxx/0-JS-NUM-CURRENCY.MD

## 0-JS-NUM-CURRENCY.MD

      
    Raw
  

              0-JS-NUM-CURRENCY.MD
            
          
    JAVASCRIPT FORMAT NUMBER AS CURRENCY

https://code-boxx.com/format-number-currency-string-javascript/
LICENSE

Copyright by Code Boxx
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

  
## 1-num-format.html
<!DOCTYPE html>
<html>
  <head>
    <title>JS Number To Currency</title>
    <script>
    // (A) THE NUMBER
    var amount = 123456;

    // (B) TO USD - $123,456.00
    var usd = new Intl.NumberFormat("en-US", {
      style: "currency",
      currency: "USD"
    }).format(amount);
    console.log(usd);

    // (C) TO JPY - ¥123,456
    var jpy = new Intl.NumberFormat("jp-JP", {
      style: "currency",
      currency: "JPY"
    }).format(amount);
    console.log(jpy);

    // (D) EURO - €123,456.00
    var eur = new Intl.NumberFormat("en-GB", {
      style: "currency",
      currency: "EUR"
    }).format(amount);
    console.log(eur);
  </script>
  </head>
  <body></body>
</html>

## 2-regular-expression.html
<!DOCTYPE html>
<html>
  <head>
    <title>JS Number To Currency</title>
  </head>
  <body>
    <script>
    // (A) CONVERT TO CURRENCY (DOLLARS)
    function tocur (amount) {
      return "$" + amount
        .toString()
        .replace(/\B(?=(\d{3})+(?!\d))/g, ",");
    }

    // (B) TEST
    var testA = tocur(1234567),
        testB = tocur(123456.78);
    console.log(testA); // $1,234,567
    console.log(testB); // $123,456.78
    </script>
  </body>
</html>

## 3-manual-string.html
<!DOCTYPE html>
<html>
  <head>
    <title>JS Number To Currency</title>
  </head>
  <body>
    <script>
    // (A) CURRENCY CONVERSION FUNCTION (DOLLARS)
    function tocur (amount) {
      // (A1) NUMBER TO STRING
      var amount = amount.toString(),
          dec = ".00",
          temp = amount.indexOf(".");

      // (A2) EXTRACT DECIMALS (IF ANY)
      if (temp != -1) {
        dec = amount.substring(temp);
        amount = amount.substring(0, temp);
      }

      // (A3) ADD THOUSAND SEPARATORS
      if (amount.length>3) {
        temp = "";
        for (let i=amount.length-1, j=1; i>=0; i--, j++) {
          temp = amount[i] + temp;
          if (j%3==0 && i!=0) { temp = "," + temp; }
        }
        amount = temp;
      }

      // (A4) RESULT
      return "$" + amount + dec;
    }

    // (B) TEST
    var testA = tocur(1234567),
        testB = tocur(123456.78);
    console.log(testA); // $1,234,567.00
    console.log(testB); // $123,456.78
    </script>
  </body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>JS Number To Currency</title>
	<script>
	// (A) THE NUMBER
	var amount = 123456;

	// (B) TO USD - $123,456.00
	var usd = new Intl.NumberFormat("en-US", {
	style: "currency",
	currency: "USD"
	}).format(amount);
	console.log(usd);

	// (C) TO JPY - ¥123,456
	var jpy = new Intl.NumberFormat("jp-JP", {
	style: "currency",
	currency: "JPY"
	}).format(amount);
	console.log(jpy);

	// (D) EURO - €123,456.00
	var eur = new Intl.NumberFormat("en-GB", {
	style: "currency",
	currency: "EUR"
	}).format(amount);
	console.log(eur);
	</script>
	</head>
	<body></body>
	</html>