添加方法

server/duiba/utils/utils.js

@@ -120,6 +120,23 @@ const formatTime = function dateFormat(thisDate, fmt = "yyyy-MM-dd hh:mm:ss") {
       fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
   return fmt;
 }
+//时间戳转为>2020/09/14
+const formatDate = function (secs) { //123456789 --> 
+  var t = new Date(secs);
+  var year = t.getFullYear();
+  var month = t.getMonth() + 1;
+  if (month < 10) { month = '0' + month };
+  var date = t.getDate();
+  if (date < 10) { date = '0' + date };
+  // var hour = t.getHours()
+  // if (hour < 10) { hour = '0' + hour }
+  // var minute = t.getMinutes()
+  // if (minute < 10) { minute = '0' + minute }
+  // var second = t.getSeconds()
+  // if (second < 10) { second = '0' + second }
+  return year + '/' + month + '/' + date;
+  // + hour + ':' + minute + ':' + second
+};
 
 function MathRand() {
   var Num = "";
@@ -128,6 +145,46 @@ function MathRand() {
   }
   return Num;
 }
+// 解决小数相加精度问题
+function addFloat(num1, num2) {
+  var r1, r2, m;
+  r1 = num1.toString().split(".")[1] ? num1.toString().split(".")[1].length : 0;
+  r2 = num2.toString().split(".")[1] ? num2.toString().split(".")[1].length : 0;
+  m = Math.pow(10, Math.max(r1, r2));
+  return (num1 * m + num2 * m) / m;
+}
+// 小数相除
+const accMul = function (arg1, arg2) {
+  var m = 0,
+    s1 = arg1.toString();
+    s2 = arg2.toString();
+  try {
+    m += s1.split(".")[1].length;
+  } catch (e) { }
+  try {
+    m += s2.split(".")[1].length;
+  } catch (e) { }
+  return (
+    (Number(s1.replace(".", "")) * Number(s2.replace(".", ""))) /
+    Math.pow(10, m)
+  );
+};
+// 小数相乘
+const signFigures = function (num, rank = 6) {
+  if (!num) return 0;
+  const sign = num / Math.abs(num);
+  const number = num * sign;
+  const temp = rank - 1 - Math.floor(Math.log10(number));
+  let ans;
+  if (temp > 0) {
+    ans = parseFloat(number.toFixed(temp));
+  } else if (temp < 0) {
+    ans = Math.round(number / Math.pow(10, temp)) * temp;
+  } else {
+    ans = Math.round(number);
+  }
+  return ans * sign;
+};
 
 module.exports = {
   loginfo,
@@ -135,5 +192,9 @@ module.exports = {
   passUrlList,
   urlCheck,
   isNewDay,
-  formatTime
+  formatTime,
+  addFloat,
+  formatDate,
+  accMul,
+  signFigures
 }
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