将数字每隔3位用逗号隔开

实现数字每隔三位用逗号隔开，便于查看金额
<!DOCTYPE html>
<html lang="zh">

	<head>
		<meta charset="UTF-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<meta http-equiv="X-UA-Compatible" content="ie=edge" />
		<title>Document</title>
	</head>

	<body>

		<table>
			<tr>
				<td class="mT">
					950000000.54
				</td>
			</tr>

		</table>

		<script src="jquery.min.js"></script>
		<script>
			$(function() {
					$(".mT").each(function() {
						var num = parseFloat($(this).text()).toFixed(2);//获取文本框中的数字
						var beforeNum = num.toString().split(".")[0];//获取小数点之前的数字
						var afterNum =num.toString().split(".")[1];//获取小数点之后的数字
						function toThousands(newnum) { //每隔3位，用逗号隔开
							var result = [],
								counter = 0;
							newnum = (newnum || 0).toString().split('');
							for(var i = newnum.length - 1; i >= 0; i--) {
								counter++;
								result.unshift(newnum[i]);
								if(!(counter % 3) && i != 0) {
									result.unshift(',');
								}
							}
							return result.join('');
						}
						var lastNum = toThousands(beforeNum);//将小数点之前的整数用逗号隔开
						$(this).text(lastNum.concat(".",afterNum));//将小数部分加在处理过的数字后边
					});
			})
		</script>
	</body>

</html>