JavaScript 中的货币格式
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Currency Formatting in JavaScript
提问by kevg
Possible Duplicate:
How can I format numbers as money in JavaScript?
I have a form with some simple JavaScript to perform an instant calculation. My problem is that I'm struggling to format it to display correctly with commas and 2 decimal places.
我有一个包含一些简单 JavaScript 的表单来执行即时计算。我的问题是我正在努力将其格式化以使用逗号和 2 个小数位正确显示。
Any help would be very much appreciated. Thank you.
任何帮助将不胜感激。谢谢你。
<p>
<label>My Daily Rate is:</label><br />
<input class="poundsBox" name="shares" id="shares" type="text" /><br />
<br />
<strong>Your Gross Contract Take Home:</strong></p>
<p><span class="result">£ <span id="result"></span></span></p>
The above illustration is provided for guidance only. Please complete the request form below for a detailed personal illustration.
<script type="text/javascript">
$("#shares").keyup(function() {
var val = parseFloat($(this).val());
// If val is a good float, multiply by 260, else show an error
val = (val ? val * 260 * 0.88 : "Invalid number");
$("#result").text(val);
})
</script>
回答by Tom
You can use standard JS toFixedmethod
您可以使用标准的 JStoFixed方法
var num = 5.56789;
var n=num.toFixed(2);
//5.57
In order to add commas (to separate 1000's) you can add regexp as follows (where numis a number):
为了添加逗号（分隔 1000），您可以添加正则表达式如下（其中num是数字）：
num.toString().replace(/(\d)(?=(\d\d\d)+(?!\d))/g, ",")
//100000 => 100,000
//8000 => 8,000
//1000000 => 1,000,000
Complete example:
完整示例：
var value = 1250.223;
var num = '$' + value.toFixed(2).replace(/(\d)(?=(\d\d\d)+(?!\d))/g, ",");
//document.write(num) would write value as follows: ,250.22
Separation character depends on country and locale. For some countries it may need to be .
分隔符取决于国家和地区。对于某些国家，可能需要.
回答by Harish
You could use toPrecision() and toFixed() methods of Number type. Check this link How can I format numbers as money in JavaScript?
您可以使用 Number 类型的 toPrecision() 和 toFixed() 方法。检查此链接如何在 JavaScript 中将数字格式化为货币？
