Differences

This shows you the differences between two versions of the page.

--- javascript:date_object_to_yyyymmdd [2016/07/07 19:20] – peter
+++ javascript:date_object_to_yyyymmdd [2020/07/15 09:30] (current) – external edit 127.0.0.1
@@ Line 14: / Line 14: @@
 var date = new Date();
 date.yyyymmdd();
+</code>
+or
+To not modify native objects, and to use multiplication which some think is clearer than string padding use:
+<code javascript>
+function yyyymmdd(dateIn) {
+   var yyyy = dateIn.getFullYear();
+   var mm = dateIn.getMonth()+1; // getMonth() is zero-based
+   var dd  = dateIn.getDate();
+   return String(10000*yyyy + 100*mm + dd); // Leading zeros for mm and dd
+}
+var today = new Date();
+console.log(yyyymmdd(today));
 </code>
@@ Line 53: / Line 70: @@
+===== Using Date.toISOString() =====
-This is a single line of code that you can use to create a YYYY-MM-DD string of today's date.
+**WARNING**:  **Date.toISOString()** creates a UTC formatted date and hence can jump date boundaries depending on the timezone. E.g. in GMT+1: (new Date(2013,13, 25)).toISOString() == '2013-12-24T23:00:00.000Z'
+To create a **YYYY-MM-DD** string of today's date:
 <code javascript>
@@ Line 60: / Line 80: @@
 </code>
+or
+<code javascript>
+var d = new Date();
+var res = d.toISOString().slice(0,10).replace(/-/g,"");
+</code>
+To get **YYYYMMDDHHmmSSsss**use this:
+<code javascript>
+var ds = (new Date()).toISOString().replace(/[^0-9]/g, "");
+</code>