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my diff_letters function
function diff_letters(word) {
var arr = word.split('');
Sort(arr);
for (var i=0; i<(arr.length-1); i++) {
if (arr[i]==arr[i+1]) return false;
}
return true;
}

You probably had i<3. I decided to make my function more general and introduce you to the length property of an array at the same time. Maybe you'll want to create a Words 5 game when we finish?

array of words with all letters different

More on arrays: we can add an item to an array using the push function. For example: if we had an array called words and we wanted to add the item word to the array:

words.push(word);

In your words4.html fill the array words with words that have each letter different.

<script src='words4.js'></script>
<script src='Sort.js'></script>
<script src='diff_letters.js'></script>
<script>
var words = [];
for (var i=0; i<words4.length; i++) {
if (diff_letters(words4[i])) {
words.push(words4[i]);
}
}
</script>
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