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20220330_Vote/Ewide.Web.Entry/wwwroot/lib/xe-utils/getDateDiff.js

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+var helperGetDateTime = require('./helperGetDateTime')
+var helperNewDate = require('./helperNewDate')
+
+var toStringDate = require('./toStringDate')
+
+var isValidDate = require('./isValidDate')
+
+var dateDiffRules = [
+  ['yyyy', 31536000000],
+  ['MM', 2592000000],
+  ['dd', 86400000],
+  ['HH', 3600000],
+  ['mm', 60000],
+  ['ss', 1000],
+  ['S', 0]
+]
+
+/**
+  * 返回两个日期之间差距,如果结束日期小于开始日期done为fasle
+  *
+  * @param {Date} startDate 开始日期
+  * @param {Date} endDate 结束日期或当期日期
+  * @return {Object}
+  */
+function getDateDiff (startDate, endDate) {
+  var startTime, endTime, item, diffTime, len, index
+  var result = { done: false, time: 0 }
+  startDate = toStringDate(startDate)
+  endDate = endDate ? toStringDate(endDate) : helperNewDate()
+  if (isValidDate(startDate) && isValidDate(endDate)) {
+    startTime = helperGetDateTime(startDate)
+    endTime = helperGetDateTime(endDate)
+    if (startTime < endTime) {
+      diffTime = result.time = endTime - startTime
+      result.done = true
+      for (index = 0, len = dateDiffRules.length; index < len; index++) {
+        item = dateDiffRules[index]
+        if (diffTime >= item[1]) {
+          if (index === len - 1) {
+            result[item[0]] = diffTime || 0
+          } else {
+            result[item[0]] = Math.floor(diffTime / item[1])
+            diffTime -= result[item[0]] * item[1]
+          }
+        } else {
+          result[item[0]] = 0
+        }
+      }
+    }
+  }
+  return result
+}
+
+module.exports = getDateDiff