In this Article we will go through how to get the number of a character in a string only using single line of code in JavaScript.
This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const characterCount = (str, char) => str.split(char).length - 1;
const characterCount = (str, char) => str.replace((new RegExp(String.raw`[^${char}]`, 'g')), '').length;
characterCount('192.168.1.1', '.'); // 3
characterCount('star wars', 's'); // 2