It is actually similar to VAR but on the other hand few of notable changes and differences due to the blocking and then scoped new variable along with same name and title can also be declared without affecting outer changes and variables. Due to the bounding block scope and solves classic interaction and with the questions about output and better way of results.
Creating the objects constructors
Sometimes as to see and then functions methods in a certain way of action and should also make it clear and sound perfect. On the other hand, certain links to pages of Mozilla Developer connection and can also look up the perfect details and interactions. More as additionally can use Google to get the specific place for documentation. Sometimes get to see and then important methods inappropriate action should make it clear and how to work.
It is the way could be doing like more efficiently in codes and also the thing which is common like optimization and does as popular way. Some of the ways like engine unable to optimize for and then garbage collector able to clean up and expecting to perform for the sake of completion of the assignment.