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Code Golf · #20 · 2026-04-24

Count character occurrences

Difficulty 1/3 · JavaScript

How to play

Write a JavaScript function body that passes all test cases using the fewest characters. Run against examples first, then submit for the full test suite. Eagle < Birdie < Par.

Given [string, char], return how many times char appears in the string.

Examples

f(["banana","a"]) → 3
f(["hello","l"]) → 2

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Your code (function body — receives input)

function(input) { 0 chars
}

Write the shortest JavaScript function body that passes all tests · Back to hub