To create a date object from date string, just add the string like this −
var date = new Date(2018,1,1);
Example
You can try to run the following code to create date object from date string. Here, the month is indexed as 0 for Jan, 1 for Feb, etc in JavaScript −
<html> <head> <title>JavaScript Dates</title> </head> <body> <script> var date; date = new Date(2018,0,1); document.write("Current Date: "+date); </script> </body> </html>
Output
Current Date: Mon Jan 01 2018 00:00:00 GMT+0530 (India Standard Time)