How to format numbers as currency strings

Take a look at the JavaScript Number object and see if it can help you.

1. toLocaleString() will format a number using location specific thousands separator.
2. toFixed() will round the number to a specific number of decimal places.
To use these at the same time the value must have its type changed back to a number because they both output a string.

Example:

Number((someNumber).toFixed(1)).toLocaleString()

3 years ago

Use the following JavaScript money formatter :

Number.prototype.formatMoney = function(decPlaces, thouSeparator, decSeparator) {

    var n = this,

        decPlaces = isNaN(decPlaces = Math.abs(decPlaces)) ? 2 : decPlaces,

        decSeparator = decSeparator == undefined ? "." : decSeparator,

        thouSeparator = thouSeparator == undefined ? "," : thouSeparator,

        sign = n < 0 ? "-" : "",

        i = parseInt(n = Math.abs(+n || 0).toFixed(decPlaces)) + "",

        j = (j = i.length) > 3 ? j % 3 : 0;

    return sign + (j ? i.substr(0, j) + thouSeparator : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + thouSeparator) + (decPlaces ? decSeparator + Math.abs(n - i).toFixed(decPlaces).slice(2) : "");

};

3 years ago