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

@@ -0,0 +1,14 @@
+var helperCreateGetDateWeek = require('./helperCreateGetDateWeek')
+
+/**
+  * 返回某个年份的第几周
+  *
+  * @param {Date} date 日期或数字
+  * @param {Number} firstDay 从年初的星期几为起始开始周开始算，默认星期一
+  * @return {Number}
+  */
+var getYearWeek = helperCreateGetDateWeek(function (targetDate) {
+  return new Date(targetDate.getFullYear(), 0, 1)
+})
+
+module.exports = getYearWeek