Write a JavaScript program to count the frequency of words in a sentence

Description: Count each word of the sentence “to be or not to be”.

Hint:

• Split the sentence into words.
• Use an object where the word is the key and the count is the value.

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JavaScript word frequency program

const sentence = "to be or not to be";
const counts = {};

for (const word of sentence.split(" ")) {
  counts[word] = (counts[word] || 0) + 1;
}

console.log(counts);

Output:

How it works

• counts[word] || 0 gives 0 for a new word, and then 1 is added.
• Objects keep the order in which keys were added.

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