Analyze Letter Frequency Instantly

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function calculateSum(arr) {
  return arr.reduce((sum, num) => sum + num, 0);
}

const numbers = [1, 2, 3, 4, 5];
console.log(calculateSum(numbers));

To be, or not to be, that is the question: Whether 'tis nobler in the mind to suffer The slings and arrows of outrageous fortune, Or to take Arms against a Sea of troubles.

The quick brown fox jumps over the lazy dog.

<div class="container">
  <h1>Welcome to my website</h1>
  <p>This is a sample paragraph with some <strong>bold</strong> text.</p>
  <ul>
    <li>Item 1</li>
    <li>Item 2</li>
  </ul>
</div>

ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz

Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, 'and what is the use of a book,' thought Alice 'without pictures or conversation?'

{
  "name": "John Doe",
  "age": 30,
  "email": "john@example.com",
  "interests": ["reading", "coding", "music"],
  "address": {
    "street": "123 Main St",
    "city": "New York"
  }
}