scope of function in c

In JavaScript, the scope chain of a function is a difficult thing to understand. This is because the scope chain of functions in JavaScript is far from the scope chain of functions in other languages such as C and C + +. This article explains in

In some C-like programming languages, each piece of code within the curly braces has its own scope, and the variables are not visible outside the code snippet that declares them (i.e. we cannot directly access the variables declared within the code

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

Original article Source: http://blog.csdn.net/yueguanghaidao/article/details/9568071#comments The scope of JS has been a bit confused, and today I accidentally read the JavaScript Authority Guide, was immediately attracted to write really good. I

Global variablesScope: Global scope (global variables can be used for all source files only if they are defined in one source file.) ）Life cycle: Program run time is always presentReference method: The global variable to be referenced must be

Original article: http://blogs.msdn.com/ B /jscript/archive/2007/07/26/scope-chain-of-jscript-functions.aspx In JavaScript, the function scope chain is hard to understand. this is because the scope chain of functions in JavaScript is far from that

(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

Use functions in JS to note three points:1, when the function is invoked, it is run in the grammatical environment when he is declared; 2, the function can not run itself, it is always called by the object, the function runs, the function body 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

The first three paragraphs describe the scope of the code ========== example 1========== var scope= ' global '; function fn () { alert (scope); var scope= ' local '; alert (scope); } fn (); Output results? alert (scope);//output