我有一个简单的JavaScript表单来执行即时计算。我的问题是我正在努力格式化它,以便用逗号和2位小数正确显示。
非常感谢任何帮助。谢谢。
<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>
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<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>
答案 0 :(得分:104)
您可以使用标准JS toFixed
方法
var num = 5.56789;
var n=num.toFixed(2);
//5.57
为了添加逗号(分隔1000个),你可以按如下方式添加正则表达式(其中num
是一个数字):
num.toString().replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,")
//100000 => 100,000
//8000 => 8,000
//1000000 => 1,000,000
完整示例:
var value = 1250.223;
var num = '$' + value.toFixed(2).replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,");
//document.write(num) would write value as follows: $1,250.22
分隔字符取决于国家/地区和地区。对于某些国家/地区,可能需要.
答案 1 :(得分:2)
您可以使用Number类型的toPrecision()和toFixed()方法。请检查此链接How can I format numbers as money in JavaScript?