Question 1 :
Question 2 :
Question 3 :
Question 4 :
(0 refers to the index of the form â€“ if you have more than one form in a page, then the first one has the index 0, second has index 1 and so on).
Question 5 :
You can directly add a script element inside the body of page.
1. For example, to add the "last updated line" to your pages, In your page text, add the following:
Functions and global variables typically reside inside the <head> element.