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a guest Mar 24th, 2019 71 Never
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  1. function getTokens(rawString) {
  2.   // NB: `.filter(Boolean)` removes any falsy items from an array
  3.   return rawString.toLowerCase().split(/[ ,!.";:-]+/).filter(Boolean).sort();
  4. }
  5. //^this function looks like it will filter any words from non word like punctuations and return something in all lowercase
  6. //(below) this function looks like it will find the most frequent words and use a for loop to help narrow down.
  7. function mostFrequentWord(text) {
  8.   let words = getTokens(text);
  9.   let wordFrequencies = {};
  10.   for (let i = 0; i <= words.length; i++) {
  11.     if (words[i] in wordFrequencies) {
  12.       wordFrequencies[words[i]]++;
  13.     } else {
  14.       wordFrequencies[words[i]] = 1;
  15.     }
  16.   }
  17.   let currentMaxKey = Object.keys(wordFrequencies)[0];
  18.   //^This looks like it setting currentMaxKey with the word frequencies to 0
  19.   let currentMaxCount = wordFrequencies[currentMaxKey];
  20.   //^This appears to set currentMaxCount equal to wordFrequencies
  21.   for (let word in wordFrequencies) {
  22.     if (wordFrequencies[word] > currentMaxCount) {
  23.       currentMaxKey = word;
  24.       currentMaxCount = wordFrequencies[word];
  25.     }
  26.   }
  27.   //returns single value
  28.   return currentMaxKey;
  29. }
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