格式为 Javascript 中的货币

Question

I have a variable which is made up of a multiplication of 2 more variables

 var EstimatedTotal =  GetNumeric(ServiceLevel) * GetNumeric(EstimatedCoreHours);

Is it possible, and if so how, or what is the function called to format this as currency? I've been googling only I cant find a function and the only ways I've seen are really, really long winded

Answer 1

Taken from here: http://javascript.internet.com/forms/currency-format.html . I've used it and it works well.

function formatCurrency(num)
{
    num = num.toString().replace(/\$|\,/g, '');
    if (isNaN(num))
    {
        num = "0";
    }

    sign = (num == (num = Math.abs(num)));
    num = Math.floor(num * 100 + 0.50000000001);
    cents = num % 100;
    num = Math.floor(num / 100).toString();

    if (cents < 10)
    {
        cents = "0" + cents;
    }
    for (var i = 0; i < Math.floor((num.length - (1 + i)) / 3); i++)
    {
        num = num.substring(0, num.length - (4 * i + 3)) + ',' + num.substring(num.length - (4 * i + 3));
    }

    return (((sign) ? '' : '-') + '$' + num + '.' + cents);
}

Answer 2

If you are looking for a quick function which would format your number (for example: 1234.5678) to something like: $1234.57 you may use.toFixed(..) method:

EstimatedTotal = "$" + EstimatedTotal.toFixed(2);

The toFixed function takes an integer value as the argument which means the number of trailing decimals. More information about this method can be found at http://www.w3schools.com/jsref/jsref_tofixed.asp .

Otherwise, if you would like to have your output format as: $1,234.57 you need to implement your own function for this. Below are two links with implementation:

• http://javascript.internet.com/forms/currency-format.html
• http://www.web-source.net/web_development/currency_formatting.htm

Answer 3

How abt using jQuery globalization plugin from microsoft? https://github.com/nje/jquery-glob

Answer 4

May not be perfect, but works for me.

if (String.prototype.ToCurrencyFormat == null) 
    String.prototype.ToCurrencyFormat = function() 
    { 
        if (isNaN(this * 1) == false)
            return "$" + (this * 1).toFixed(2); 
    }

Answer 5

There are no in-built functions for formatting currency in Javascript.

There are a number of scripts that you can find online that will help you with writing your own, however, here's one:

http://javascript.internet.com/forms/currency-format.html

Google "javascript currency".

Answer 6

Now there's Intl.NumberFormat that can easily format currency or other numbers to locales.

Using your EstimatedTotal example and USD, you can do:

const formattedTotal = 
new Intl.NumberFormat('en-US', { 
    style: 'currency', 
    currency: 'USD'
}).format(EstimatedTotal));

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat