Best tutor to learn JavaScript online, after I have learn it as a beginner

Answer 1

There is the Javascript for reference.

http://www.ecma-international.org/publications/standards/Ecma-262.htm

And you should know how to handle the elements of HTML ( DOM ).
And handle the event also.

https://developer.mozilla.org/en-US/docs/Web/API/Document_Object_Model

Then you should know how to make connection with XMLHttpRequest ( AJAX )

Answer 2

try tutorialpoint and w3school website e it's great

Answer 3

go for javatpoint.com there u can find an example for every keyword used in Js..
all the best....

Answer 4

Try newboston videos by Bucky Roberts on youtube. They are easy to learn and quite entertaining.