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Scope

In JavaScript, scope refers to the range within which variables can be accessed.


The scope of var ignores the code block enclosed by curly braces { }.

var scope
if (true) {
    var name = "one";
}

console.log(name); // "one"

In the code above, the name variable declared with var is defined within the if block, but it can also be accessed outside the if block.

Note: The if keyword is used to create conditional statements. The condition is placed inside the parentheses, and the code to be executed is placed within the curly braces { }. In the conditional statement above, since true is always true, the code inside the if block is executed.


Types of scopes include global scope, local scope, block scope, and function scope.

We will explore the characteristics of each type of scope with practical examples later on.

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