Array Manipulation
JavaScript
// Filter and map array elements
const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
const evenSquares = numbers
.filter(num => num % 2 === 0)
.map(num => num ** 2);
console.log(evenSquares); // [4, 16, 36, 64, 100]
List Comprehension
Python
# Generate a list of squares for even numbers
numbers = range(1, 11)
even_squares = [x**2 for x in numbers if x % 2 == 0]
print(even_squares) # [4, 16, 36, 64, 100]
Basic Form Structure
HTML
<form action="/submit" method="POST">
<label for="name">Name:</label>
<input type="text" id="name" name="name" required>
<label for="email">Email:</label>
<input type="email" id="email" name="email" required>
<button type="submit">Submit</button>
</form>
Flexbox Centering
CSS
/* Center content using Flexbox */
.container {
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}