Printing a message to the console:
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console.log('Hello, world!');
Declaring a variable and assigning it a value:
var x = 10;
Declaring a function:
function greet(name) {
console.log('Hello, ' + name + '!');
}
Using an if statement to control the flow of execution:
if (x > 5) {
console.log('x is greater than 5');
} else {
console.log('x is less than or equal to 5');
}
Using a for loop to iterate over an array:
var arr = [1, 2, 3, 4, 5];
for (var i = 0; i < arr.length; i++) {
console.log(arr[i]);
}
Using an object to store data:
var person = {
name: 'John',
age: 30,
city: 'New York'
};
console.log(person.name);
Using the DOM API to manipulate HTML elements:
document.getElementById('my-element').innerHTML = 'Hello, world!';
Making an HTTP request with the fetch API:
fetch('https://example.com/api/endpoint')
.then(response => response.json())
.then(data => console.log(data));
Using a class to define a blueprint for creating objects:
class Vehicle {
constructor(make, model, year) {
this.make = make;
this.model = model;
this.year = year;
}
startEngine() {
console.log('Vroom!');
}
}
var car = new Vehicle('Toyota', 'Camry', 2020);
car.startEngine();
