Write the JavaScript to add the same text as a block comment. Write a statement that creates a variable with the identifier title and the value “Dr.” What is a library? Explain the difference between...

Write the JavaScript to add the same text as a block comment. Write a statement that creates a variable

with the identifier title and the value “Dr.” What is a library? Explain the difference between global and local variables, and describe how using or not using the var keyword can affect the scope of a variable.