1.

What Is Scope Variable In Javascript?

Answer»
  • The scope is SET of objects, variables and function and the JavaScript can have GLOBAL scope variable and local scope variable.
  • The global scope is a window object and its used out of function and within the functions.
  • The local scope is a function object and its used within the functions.

The EXAMPLE for global scope variable

var gblVar = "Anil Singh";
function getDetail() {

console.log(gblVar);
}

and other example for global
function demoTest() {
x = 15;
};
console.log(x); //out PUT is 15

The example for local scope variable
function getDetail() {

var gblVar = "Anil Singh";
console.log(gblVar);
}

and other example for local
function demoText() {
var x = 15;
};
console.log(x); //undefined

The example for global scope variable

var gblVar = "Anil Singh";
function getDetail() {

console.log(gblVar);
}

and other example for global
function demoTest() {
x = 15;
};
console.log(x); //out put is 15

The example for local scope variable
function getDetail() {

var gblVar = "Anil Singh";
console.log(gblVar);
}

and other example for local
function demoText() {
var x = 15;
};
console.log(x); //undefined



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