JavaScript: Split and count words in string

Question

For example I have input string with value "test test in string".

I need to do a function that will split every word and count each how many of them are in that string input.

The output should be like: test: 2, in: 1, string: 1

Thanks a lot in advance for tip.

@Yousaf sure, I've splited that string input, but I don't know how to count frequency of words. — a1tern4tive
– a1tern4tive, Commented May 27, 2020 at 10:58

Yousaf · Accepted Answer · 2020-05-27 10:58:51Z

2

after splitting the string, you can use reduce function to count the frequency of each word

const str = "test test in string";

const result = str.split(' ').reduce((acc, curr) => {
  acc[curr] = acc[curr] ? ++acc[curr] : 1;
  return acc;
}, {})

console.log(result);

answered May 27, 2020 at 10:58

Yousaf

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user0101 · Accepted Answer · 2020-05-27 10:58:41Z

0

If you are cool with lodash, then:

_.countBy('test test in string'.split(' '))

answered May 27, 2020 at 10:58

user0101

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Comments

Vu Hoang Duc · Accepted Answer · 2020-05-27 11:10:29Z

0

You can do like that.

var str = "test test test in string";
var res = str.split(" ");
  
var result = {};
  res.forEach(function(x) {
  result[x] = (result[x] || 0) + 1;
});
console.log(result)

answered May 27, 2020 at 11:10

Vu Hoang Duc

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