JavaScript - 将某些东西格式化为没有小数的货币的简单方法

Question

我一直在尝试想出一种方法，而不使用某人的插件将带小数的数字格式化为不带小数的货币。到目前为止，我发现以下是最简单的方法：

yourVar.toLocaleString("en", { style: 'currency', currency: 'USD' }).split('.')[0]

示例：

before:446882086.00

after:$446,882,086

Answer 1

在这个问题的帮助下：Add commas or spaces to group every three digits

我已经创建了这个函数：

function convertString(currency, input) {
  var thisInt = Math.round(input); //this removes numbers after decimal   
  var thisOutputValue = currency + commafy(thisInt); //add currency symbol and commas

  return thisOutputValue;
}


function commafy(num) {
  var str = num.toString().split('.');
  if (str[0].length >= 5) {
    str[0] = str[0].replace(/(\d)(?=(\d{3})+$)/g, '$1,');
  }
  if (str[1] && str[1].length >= 5) {
    str[1] = str[1].replace(/(\d{3})/g, '$1 ');
  }
  return str.join('.');
}    

var changeIntToCurrencyString = convertString('$', 435345.00) //change numbers into dollars

console.log(changeIntToCurrencyString )

以上代码将整数435345.00转换为美元货币字符串：$435,345。它应该适用于所有其他整数值:)

小提琴：https://jsfiddle.net/thatOneGuy/zL817x5a/3/

function convertString(currency, input) {
  var thisInt = Math.round(input); //this removes numbers after decimal   
  var thisOutputValue = currency + commafy(thisInt); //add currency symbol and commas

  return thisOutputValue;
}


function commafy(num) {
  var str = num.toString().split('.');
  if (str[0].length >= 5) {
    str[0] = str[0].replace(/(\d)(?=(\d{3})+$)/g, '$1,');
  }
  if (str[1] && str[1].length >= 5) {
    str[1] = str[1].replace(/(\d{3})/g, '$1 ');
  }
  return str.join('.');
}

var tryoutint = 435345.00;
var changeIntToCurrencyString = convertString('$', tryoutint) //change numbers into dollars

console.log(changeIntToCurrencyString)
alert(tryoutint + ' : ' + changeIntToCurrencyString)