The Shopify.formatMoney method extracted from option_selection.js for stand-alone purposes.

shopify-money.js

var Shopify = Shopify || {};
// ---------------------------------------------------------------------------
// Money format handler
// ---------------------------------------------------------------------------
Shopify.money_format = "${{amount}}";
Shopify.formatMoney = function(cents, format) {
  if (typeof cents == 'string') { cents = cents.replace('.',''); }
  var value = '';
  var placeholderRegex = /\{\{\s*(\w+)\s*\}\}/;
  var formatString = (format || this.money_format);

  function defaultOption(opt, def) {
     return (typeof opt == 'undefined' ? def : opt);
  }

  function formatWithDelimiters(number, precision, thousands, decimal) {
    precision = defaultOption(precision, 2);
    thousands = defaultOption(thousands, ',');
    decimal   = defaultOption(decimal, '.');

    if (isNaN(number) || number == null) { return 0; }

    number = (number/100.0).toFixed(precision);

    var parts   = number.split('.'),
        dollars = parts[0].replace(/(\d)(?=(\d\d\d)+(?!\d))/g, '$1' + thousands),
        cents   = parts[1] ? (decimal + parts[1]) : '';

    return dollars + cents;
  }

  switch(formatString.match(placeholderRegex)[1]) {
    case 'amount':
      value = formatWithDelimiters(cents, 2);
      break;
    case 'amount_no_decimals':
      value = formatWithDelimiters(cents, 0);
      break;
    case 'amount_with_comma_separator':
      value = formatWithDelimiters(cents, 2, '.', ',');
      break;
    case 'amount_no_decimals_with_comma_separator':
      value = formatWithDelimiters(cents, 0, '.', ',');
      break;
  }

  return formatString.replace(placeholderRegex, value);
};

Does this limit you to just dollars? Is it possible to get this working across multiple different stores with different currencies?

It doesn’t actually care what the currency is. The first argument is the unformatted amount. The second argument is the format, which could be whatever you need for the currently displayed currency i.e. “£{{ amount }}”. Then pass it a new amount and new format when you change the currency.

Hi , I am using

`
var Shopify = Shopify || {};
Shopify.money_format = "{{ shop.money_format }}";
Shopify.formatMoney = function(cents, format) {
if (typeof cents == 'string') {
cents = cents.replace('.', '');
}
var value = '';
var placeholderRegex = /{{\s*(\w+)\s*}}/;
var formatString = (format || this.money_format);

function defaultOption(opt, def) {
    return (typeof opt == 'undefined' ? def : opt);
}

function formatWithDelimiters(number, precision, thousands, decimal) {
    precision = defaultOption(precision, 2);
    thousands = defaultOption(thousands, ',');
    decimal = defaultOption(decimal, '.');

    if (isNaN(number) || number == null) {
        return 0;
    }

    number = (number / 100.0).toFixed(precision);

    var parts = number.split('.'),
        dollars = parts[0].replace(/(\d)(?=(\d\d\d)+(?!\d))/g, '$1' + thousands),
        cents = parts[1] ? (decimal + parts[1]) : '';

    return dollars + cents;
}

switch (formatString.match(placeholderRegex)[1]) {
    case 'amount':
        value = formatWithDelimiters(cents, 2);
        break;
    case 'amount_no_decimals':
        value = formatWithDelimiters(cents, 0);
        break;
    case 'amount_with_comma_separator':
        value = formatWithDelimiters(cents, 2, '.', ',');
        break;
    case 'amount_no_decimals_with_comma_separator':
        value = formatWithDelimiters(cents, 0, '.', ',');
        break;
}

return formatString.replace(placeholderRegex, value);

};`

I am getting an error
Uncaught (in promise) TypeError: Cannot read properties of null (reading '1')

The error is only raised at the first time i.e when someone clicks on a particular product , but error disappears when the same page is refreshed.

Would love some help here.

@shriDeveloper Make sure the method is not inside a .liquid file or use {% raw %}{{ amount }}{% endraw %} in order to escape the Liquid parsing of {{ amount }} (which parses to an empty string)

As AlpineJS Magic property if anyone wants it -> https://gist.github.com/james0r/e5a02db44beba8b5fc447e78615c1eb7

This was exactly what I was looking for and works like a charm, you sir are an absolute legend.

there was a slight error in the code

function formatMoney(cents, format) {
  if (typeof cents == 'string') { cents = cents.replace('.', ''); }
  var value = '';
  var placeholderRegex = /\{\{\s*(\w+)\s*\}\}/;
  var formatString = (format || this.money_format);

  function defaultOption(opt, def) {
    return (typeof opt == 'undefined' ? def : opt);
  }

  function formatWithDelimiters(number, precision, thousands, decimal) {
    precision = defaultOption(precision, 2);
    thousands = defaultOption(thousands, ',');
    decimal = defaultOption(decimal, '.');

    if (isNaN(number) || number == null) { return 0; }

    number = (number / 100.0).toFixed(precision);

    var parts = number.split('.'),
      dollars = parts[0].replace(/(\d)(?=(\d\d\d)+(?!\d))/g, '$1' + thousands),
      cents = parts[1] ? (decimal + parts[1]) : '';

    return dollars + cents;
  }

  var match = formatString.match(placeholderRegex);

  if (match) {
    switch (match[1]) {
      case 'amount':
        value = formatWithDelimiters(cents, 2);
        break;
      case 'amount_no_decimals':
        value = formatWithDelimiters(cents, 0);
        break;
      case 'amount_with_comma_separator':
        value = formatWithDelimiters(cents, 2, '.', ',');
        break;
      case 'amount_no_decimals_with_comma_separator':
        value = formatWithDelimiters(cents, 0, '.', ',');
        break;
    }
  }

  return formatString.replace(placeholderRegex, value);
};