这篇文章主要介绍了JS基于正则实现数字千分位用逗号分隔的方法,涉及javascript正则表达式操作数字的相关实现技巧,需要的朋友可以参考下
本文实例讲述了JS基于正则实现数字千分位用逗号分隔的方法。分享给大家供大家参考，具体如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>js千分位逗号隔开</title>
</head>
<body>
<script >
var a = 222122122.6754;
var b = a.toFixed(2).replace(/(\d)(?=(\d{3})+\.)/g, '$1,');//使用正则替换，每隔三个数加一个','
console.log(b)
</script>
</body>
</html>运行结果：222,122,122.68
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