update 14-date.js

SahinShazi · SahinShazi · commit b6b48fd02c2b · 2025-09-18T11:03:48.000+06:00
diff --git a/14-date.js b/14-date.js
@@ -1,45 +1,64 @@
-//JavaScript Data 
+// ===============================
+// JavaScript Date & Time Examples
+// ===============================
 
-//Get Mathord
+// Current Date Object
 const myDate = new Date();
-console.log(myDate.toString());
-console.log(myDate);
-console.log(typeof myDate);
-console.log(myDate.toDateString());
-console.log(myDate.toLocaleString());
 
+// Different ways to show date
+console.log("Full Date String:", myDate.toString());
+console.log("Date Object:", myDate);
+console.log("Type of Date:", typeof myDate);
+console.log("Readable Date:", myDate.toDateString());
+console.log("Locale Date/Time:", myDate.toLocaleString());
+
+// Example: Get weekday name in full form
 console.log(
-    myDate.toLocaleString('default', {
-        weekday: 'long',
-    })
+    "Weekday Name:",
+    myDate.toLocaleString('default', { weekday: 'long' })
 );
 
-let updateDate = new Date(2024, 3, 5);
-let styleDate = new Date('01-15-2002');
-console.log(updateDate);
-console.log(styleDate);
+// -------------------------------
+// Create specific date examples
+// -------------------------------
 
+// Format: new Date(year, monthIndex, day)
+// NOTE: monthIndex starts from 0 (January = 0)
+let updateDate = new Date(2024, 3, 5); // April 5, 2024
+let styleDate = new Date("01-15-2002"); // January 15, 2002
+console.log("Custom Date (Y,M,D):", updateDate);
+console.log("Custom Date (MM-DD-YYYY):", styleDate);
 
+// -------------------------------
+// Time difference example
+// -------------------------------
 
-//Time Different Example 
+// Current timestamp in milliseconds
 let myTime = Date.now();
-console.log(myTime);
+console.log("Current Timestamp (ms):", myTime);
 
+// Simple task function (loop for testing execution time)
 function simpleTasks() {
     for (let step = 0; step < 100; step++) {
-        console.log('Walking east to one step', step);
+        console.log("Walking east to one step", step);
     }
 }
 
-let startTime = Date.now();
-simpleTasks();
-let endTime = Date.now();
+// Measure task execution time
+let startTime = Date.now(); // Start timer
+simpleTasks(); // Run function
+let endTime = Date.now(); // End timer
 
-console.log(`The tasks took ${endTime - startTime} millisecond to complete`);
+console.log(`The tasks took ${endTime - startTime} milliseconds to complete`);
 
-//Second 
-console.log(Math.floor(myTime / 1000));
+// -------------------------------
+// Convert milliseconds to seconds
+// -------------------------------
+console.log("Current Timestamp (seconds):", Math.floor(myTime / 1000));
 
-console.log(myDate.getDate());
-console.log(myDate.getFullYear());
-console.log(myDate.getMonth());
+// -------------------------------
+// Extract specific date parts
+// -------------------------------
+console.log("Day of Month:", myDate.getDate());
+console.log("Year:", myDate.getFullYear());
+console.log("Month Index (0-based):", myDate.getMonth());
