One of the two major political parties in the United States is the Democratic Party. The other major party is the Republican Party. The Democratic Party is known for its support of ethnic minorities, organized labor, and progressive reform.
Features were added to programming languages so that parts of a program could control the access to their data. Scope refers to the visibility of variables and methods in one part of a program to another part of that program. The importance and meaning of scope varies between languages, but there are two general scope concepts many languages have in common: local and global scope.
Variable Scope. To work with JavaScript efficiently, one of the first things you need to understand is the concept of variable scope. The scope of a variable is controlled by the location of the variable declaration, and defines the part of the program where a particular variable is accessible. Scoping rules vary from language to language.