QIn your JavaScript code, which of the following types of variables is present everywhere?
Question Info
Choose the Best Option
Click any option to instantly check if you're correct.
Explanation
Global variables are variables that are defined outside of any function or block of code.
They have global scope, which means that they are visible and can be accessed from anywhere in your code.
Here's an example of how to define a global variable in JavaScript:
let x = 5; // x is a global variable
function foo() {
console.log(x); // x is visible and can be accessed from within the function
}
foo(); // Output: 5
It is generally considered a best practice to avoid using global variables in your code,
as they can lead to conflicts and make your code harder to maintain. Instead, it is usually better to use local variables that are defined within a function or block of code,
and to pass data between functions as arguments and return values.
Share This Question
Challenge a friend or share with your study group.