How to add this in Script Editor WP ?

Hello Forum,

I tried adding (Copy & Paste) the script in this article: http://www.c-sharpcorner.com/blogs/redirect-to-different-page-on-cancel-or-save-button-click-in-newformaspx1

Into a Script Editor WP on the NewForm.aspx, But, It didn't work - Could you please help me out?