Count Characters

count-characters.markdown

Count Characters

A Pen by Benjamin Kayode on CodePen.

License.

index.html

<h1>The 'B' counter</h1>
<input placeholder="string to search" />
<button>Count</button>
<div c></div>

script.js

const button = document.querySelector("button");
const input = document.querySelector("input");
button.addEventListener('click', () => {
  const count = countBs(input.value);
  document.querySelector("[c]").innerHTML = `B occurred ${count} times`;
});

const countBs = (str) => countChar(str, 'B');
const countChar = (str, c) => (str.match(new RegExp(`${c}`, 'g')) || []).length;