global scope definition

http://www.cnblogs.com/wolf-lifeng/p/3156936.html2.3 Global Scope 2.3.1 OverviewThe global scope is the largest namespace scope, unlike the user-defined namespace scope, where the global scope does not need to be defined, and it naturally exists in

in the 12th chapter of the description of variable objects, we already know that the data of an execution context (variables, function declarations, and formal parameters of functions) is stored as attributes in the variable object. We also know

ObjectiveIn the 12th chapter, in the description of variable objects, we already know that the data (variables, function declarations, and function parameters) of an execution context are stored as attributes in the variable object. We also know

ScopeScope is the accessible scope of variables and functions, that is, scope controls the visibility and life cycle of variables and functions. It can be said that when variables and functions can be used, when they are destroyed, it is related to

Whether it is class-based face-to-face object programming or the definition of internal variables of simple functions, the scope of variables is always a step that must be understood in Python learning, next we will start to fully parse the scope of

Each programming language, its variables have a certain range of valid, beyond this range, the variable is invalid, which is the scope of the variable. From the point of view of mathematics, it is the field of the independent variable. Scopes are

(1) Scope The scope of a variable is the region of the variable that is defined in the program's source code. 1. The lexical scope is used in JS (lexical scope) A variable that is not declared within any function (which is also considered global

PrefaceIn the description of the variable object in Chapter 12th, we already know that the data of the execution context (variables, function declarations, and function parameters) are stored in the variable object as attributes. At the same time,

Whether it is a class-based face object programming, or a simple function of the definition of internal variables, the scope of the variable is always a Python learning must understand the link, the following we start from the local variables and

Deep understandingJavaScriptSeries ( -): Scope chain(Scope Chain)ObjectiveIn the 12th chapter of the description of variable objects, we already know that the data of an execution context (variables, function declarations, and formal parameters of