Request Scope Variables
56027
ColdFusion - When to use the "request" scope?
154778
Fetching all (javascript) global variables in a page
157501
How do I set variables for variable_get()?
57030
Any way to know if a variable is an angularjs promise?
111813
Getting All Variables In Scope
74685
What Scoping Class Will  Use?
95117
How do I pass variables to JavaScript?
103273
How can i access javascript variables in JSP?
49009
Variable scope similar to other languages
69954
Farm scope Event Receiver
129168
scope of local variable in enhanced for-loop
59731
Scope of server callback in aura action
134684
Variable's scope in a switch case
81616
How to store and receive variables in WP sessions?
4272
Short description of the scoping rules?
27136
Reference: What is variable scope, which variables are accessible from where and what are "undefined variable" errors?
139696
ScheduledTask with scoped variables. Working with timed evaluation