Step by Step solution about How to resolve the algorithm Character codes step by step in the JavaScript programming language

Explanation:

Line 1 and 2:

• console.log('a'.charCodeAt(0)); gets the Unicode code point (numeric value) of the character 'a', which is 97.
• console.log(String.fromCharCode(97)); converts the code point 97 back to the character 'a' (using fromCharCode method).

Line 4 and 5:

• ['字'.codePointAt(0), '🐘'.codePointAt(0)] gets the Unicode code points of the Chinese character '字' and the elephant emoji '🐘'.
• The result is an array of two code points: [23383, 128024].

Line 7-8:

• [23383, 128024].map(function (x) { ... }) uses the map method on the array of code points.
• It applies the function function (x) { ... } to each element in the array, where x represents the current code point.

Line 9:

• Inside the function, String.fromCodePoint(x) converts the code point x back to its corresponding character.
• This results in an array of characters: ["字", "🐘"].

In summary, this code demonstrates how to convert between characters and their Unicode code points in JavaScript, allowing you to manipulate characters in a more precise way that's independent of their representation in different character encodings.

console.log('a'.charCodeAt(0)); // prints "97"
console.log(String.fromCharCode(97)); // prints "a"


['字'.codePointAt(0), '🐘'.codePointAt(0)]


[23383, 128024]


[23383, 128024].map(function (x) {
	return String.fromCodePoint(x);
})


["字", "🐘"]