Variables
You can imagine variables as boxes where you can store a value and later use it. Variables are memory for your program.
With variables, we can perform the following operations:
- Create a variable with a chosen name.
- Assign or overwrite a variable's value.
- Retrieve (use) the variable's value.
We can create variables in JavaScript using 3 keywords:
let
const
var
In most cases, we will create variables using the let
keyword, as it is the most flexible.
For example:
let date = "11.2.2024";
console.log(date);
This will print:
11.2.2024
In the example, we used the let
keyword to create a variable named date
and assigned it the value "11.2.2024"
using the =
operator. We then used this value in the console.log
command to print its value.
Instructions
Create a variable firstName
using the let
keyword and assign it the value "John"
.
On the next line, create a variable surname
using the let
keyword and assign it the value "Doe"
.
On the next line, print the value of the firstName
variable using the console.log
command.
On the next line, print the value of the surname
variable using the console.log
command.
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