What is the correct way to declare a variable in javascript?

a. const cityName = Lagos;

b. const cityname = "Lagos";

c. const cityName = "Lagos";

d. const CityName = "Lagos";

Out of the options you provided, the most correct way to declare a variable in JavaScript for the city name is:

c. const cityName = "Lagos";

Here's why:

const: This keyword is used to declare a constant variable. This means the value assigned to the variable cannot be changed later in the code. This is a good practice for things like city names that are unlikely to change.
cityName: This is a clear and descriptive variable name. It uses camelCase (lowercase for the first word and uppercase for subsequent words) which is the convention for variable names in JavaScript.
"Lagos": This is a string literal enclosed in double quotes, which is the appropriate way to store text data like a city name.

There are actually two main ways to declare variables in modern JavaScript: `let `and `const`. Both are block-scoped, meaning their scope is limited to the block of code they are declared in (like an if statement or a function).

Using `let `allows you to reassign a value to the variable later in your code. This is useful for variables that will change throughout your program.

On the other hand,` const` is used for variables that should hold a constant value and not be reassigned. This helps prevent accidental modification and improves code readability.

Here's an example:

Generally, it's recommended to use const by default and only use let when you specifically need to reassign the variable. This helps prevent bugs and makes your code more predictable.

@"blessedtechie"#p521 you are spot on.