javascript format price

问题

I wish to format a variable to a price format where if it is for example $90 then leave out the decimal which it already does anyway. But if the value is $44.5 then I want to format it as $44.50. I can do it in php not javascript.

PHP example:

number_format($price, !($price == (int)$price) * 2);

The code I want to format:

$(showdiv+' .calc_price span').html(sum_price);

回答1:

var price = 44.5;    
var dplaces = price == parseInt(price, 10) ? 0 : 2;
price = '$' + price.toFixed(dplaces);

回答2:

PHPJS has that code for you: http://phpjs.org/functions/money_format:876

Also provided by @Daok How can I format numbers as money in JavaScript?

回答3:

Try this

function priceFormatter(price)
{
    //Checks if price is an integer
    if(price == parseInt(price))
    {    
        return "$" + price;
    }

    //Checks if price has only 1 decimal
    else if(Math.round(price*10)/10 == price)
    {
        return "$" + price + "0";
    }

    //Covers other cases
    else
    {
        return "$" + Math.round(price*100)/100;
    }
}

来源：https://stackoverflow.com/questions/7772699/javascript-format-price