Initial data commit

Task/Palindrome-dates/JavaScript/palindrome-dates-1.js

@@ -0,0 +1,44 @@
+/**
+ * Adds zeros for 1 digit days/months
+ * @param date: string
+ */
+const addMissingZeros = date => (/^\d$/.test(date) ? `0${date}` : date);
+
+/**
+ * Formats a Date to a string. If readable is false,
+ * string is only numbers (used for comparison), else
+ * is a human readable date.
+ * @param date: Date
+ * @param readable: boolean
+ */
+const formatter = (date, readable) => {
+  const year = date.getFullYear();
+  const month = addMissingZeros(date.getMonth() + 1);
+  const day = addMissingZeros(date.getDate());
+
+  return readable ? `${year}-${month}-${day}` : `${year}${month}${day}`;
+};
+
+/**
+ * Returns n (palindromesToShow) palindrome dates
+ * since start (or 2020-02-02)
+ * @param start: Date
+ * @param palindromesToShow: number
+ */
+function getPalindromeDates(start, palindromesToShow = 15) {
+  let date = start || new Date(2020, 3, 2);
+
+  for (
+    let i = 0;
+    i < palindromesToShow;
+    date = new Date(date.setDate(date.getDate() + 1))
+  ) {
+    const formattedDate = formatter(date);
+    if (formattedDate === formattedDate.split("").reverse().join("")) {
+      i++;
+      console.log(formatter(date, true));
+    }
+  }
+}
+
+getPalindromeDates();