标签:http io ar java for sp div on cti
下面是一个格式化函数,可以控制小数位数,自动四舍五入。例如:12345格式化为12,345.00,12345.6格式化为12,345.60,12345.67格式化为 12,345.67,只留两位小数。偏关县信访局
下面为程序代码:
<script type="text/javascript"> function fmoney(s, n) { n = n > 0 && n <= 20 ? n : 2; s = parseFloat((s + "").replace(/[^\d\.-]/g, "")).toFixed(n) + ""; var l = s.split(".")[0].split("").reverse(), r = s.split(".")[1]; t = ""; for(i = 0; i < l.length; i ++ ) { t += l[i] + ((i + 1) % 3 == 0 && (i + 1) != l.length ? "," : ""); } return t.split("").reverse().join("") + "." + r; } function rmoney(s) { return parseFloat(s.replace(/[^\d\.-]/g, "")); } function g(id) { return document.getElementById(id); } window.onload = function() { var num, txt = g("txt"), txt2 = g("txt2"), btn = g("btn"), btn2 = g("btn2"), span = g("span"); btn.onclick = function() { num = parseInt(g("num").value); txt.value = fmoney(txt.value, num); txt2.value = fmoney(txt2.value, num); } ; btn2.onclick = function() { num = parseInt(g("num").value); span.innerHTML = "=" + fmoney(rmoney(txt.value) + rmoney(txt2.value), num); } ; } ; </script>
调用fmoney("12345.675910", 3),返回12,345.676。
标签:http io ar java for sp div on cti
原文地址:http://www.cnblogs.com/xiaoyang002/p/4050977.html