JavaScript exercises Part 1
If you are learning JavaScript you need to do these exercises to practise an learn this fantastic language.
To start programming in JavaScript you only need a text editor and a web navigator to do and test the following exercises.
Each exercise needs an html file. The code must be between the labels <body></body>.
Example:
<!DOCTYPE html>
<html lang="es">
<head>
<title>título</title> <meta charset="utf-8" />
</head>
<body>
<script>
// JavaScript code
</script>
</body>
</html>
Exercise
Ask the age and answer if you can drive
// Ask the age
var age = prompt("Write your age");
// Check if the value is a number
if (Number(age) == age) {
// if it´s older than 18
if (age >= 18) {
// Print on screen
document.write("You can drive");
}
}
// If not
else {
// Show a message
alert("Write a valid number");
}