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Refactor: Use standard Map.groupBy() in wordlist.js #3

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Refactor: Use standard Map.groupBy() in wordlist.js #3

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2 changes: 2 additions & 0 deletions index.html
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Original file line number Diff line number Diff line change
@@ -1 +1,3 @@
<a href="https://github.com/jrobbins/computer-science">See GitHub home page</a>
<br>
<a href="wordlist_grouped.html">Grouped Word List</a>
3 changes: 3 additions & 0 deletions wordlist.js
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48 changes: 48 additions & 0 deletions wordlist_grouped.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Grouped Word List</title>
<script src="wordlist.js"></script>
</head>
<body>
<h1>Word List Grouped by First Letter</h1>

<script>
// Ensure the DOM is fully loaded before trying to manipulate it,
// though in this case, script is at the end of body, so it's mostly fine.
document.addEventListener('DOMContentLoaded', () => {
if (typeof wordsByFirstLetter === 'undefined' || !(wordsByFirstLetter instanceof Map)) {
console.error('wordsByFirstLetter is not defined or not a Map. Make sure wordlist.js is loaded and defines it.');
const errorMsg = document.createElement('p');
errorMsg.textContent = 'Error: Could not load or process the word list. See console for details.';
document.body.appendChild(errorMsg);
return;
}

const container = document.createElement('div');
document.body.appendChild(container);

// Sort the keys (letters) alphabetically
const sortedLetters = Array.from(wordsByFirstLetter.keys()).sort();

for (const letter of sortedLetters) {
const words = wordsByFirstLetter.get(letter);

const letterHeading = document.createElement('h2');
letterHeading.textContent = letter.toUpperCase();
container.appendChild(letterHeading);

const wordUl = document.createElement('ul');
for (const word of words) {
const wordLi = document.createElement('li');
wordLi.textContent = word;
wordUl.appendChild(wordLi);
}
container.appendChild(wordUl);
}
});
</script>
</body>
</html>