what is charcode in javascript code example

Example 1: javascript charcode

const sentence = 'The quick brown fox jumps over the lazy dog.';

const index = 4;

console.log(`The character code ${sentence.charCodeAt(index)} is equal to ${sentence.charAt(index)}`);
// expected output: "The character code 113 is equal to q"

Example 2: charcodeAt javascript

const sentence = 'The quick brown fox jumps over the lazy dog.';

const index = 4;
// return the chartcode of the character with index N°4
const charcode= sentence.charCodeAt(index);
console.log (charcode);  
// expected output: "The character code 113 is equal to q"

// remember that charCodeAt return the code on ♦ keypress event ♦