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JavaScript - count character occurrences
7 points
In this article, we would like to show you how to count the number of characters that were used in some text using JavaScript.
Quick solution:
xxxxxxxxxx1
const countCharacters = (input) => {2
const counts = {};3
for (const entry of input) {4
const count = counts[entry] ?? 0;5
counts[entry] = count + 1;6
}7
return counts;8
};9
10
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// Usage example:12
13
const input = 'This is some text...';14
const counts = countCharacters(input);15
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for (const key in counts) {17
console.log(key + ' ' + counts[key]);18
}Output:
xxxxxxxxxx1
T 12
h 13
i 24
s 35
36
o 17
m 18
e 29
t 210
x 111
. 3
