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

@@ -0,0 +1,22 @@
+var isDate = require('./isDate')
+var toStringDate = require('./toStringDate')
+
+var helperNewDate = require('./helperNewDate')
+
+/**
+  * 判断是否闰年
+  *
+  * @param {Date} date 日期或数字
+  * @return {Boolean}
+  */
+function isLeapYear (date) {
+  var year
+  var currentDate = date ? toStringDate(date) : helperNewDate()
+  if (isDate(currentDate)) {
+    year = currentDate.getFullYear()
+    return (year % 4 === 0) && (year % 100 !== 0 || year % 400 === 0)
+  }
+  return false
+}
+
+module.exports = isLeapYear