Without u Quote by Cody Lindley

“If you assign a new variable without using the var keyword, that variable will be global, even if you are first assigning it in…

— Eric Freeman

“If a variable is declared outside a function, it’s GLOBAL. If it’s declared inside a function, it’s LOCAL.”

— Eric Freeman

“When you declare any kind of global variable or define a global function, it is stored as a property in the window object. So”

— Eric Freeman

“Now when we use the function keyword this way — that is, within a statement, like an assignment statement — we call this a…

— Eric Freeman

“methods in objects are properties too. They just happen to have a function assigned to them.”

— Eric Freeman

“By lexical scope we mean that JavaScript’s rules for scoping are based purely on the structure of your code (not on some dynamic runtime…

— Eric Freeman

“The first form, a short variable declaration, is the most compact, but it may be used only within a function, not for package-level variables.”

— Alan A. A. Donovan

“Lexical scope means that we can determine the scope of a variable by reading our code.”

— Eric Freeman

“The properties of an object are automatically exposed, whereas the variables in a closure are automatically hidden.”

— David Herman

"The most powerful single idea in mathematics is the notion of a variable."

— Alexander Dewdney

“Closures are a function along with a referencing environment.”

— Eric Freeman

“A person's value is attached to a variable exponent.”

— David Bajo