Top community members
All Wiki Articles Create Wiki Article

Welcome to Dirask IT community! ❤ 💻
We are community of people that helps each other.

If you are beginner in IT field, you are more then welcome to ask questions, it will help you to learn faster. We are here to help you.

We are always beginner in something, we just need to remember it along the way.

there are no wrong questions - Ask Question

JavaScript - how to convert integer number to letter?

0 contributions
14 points

Simple example

// ONLINE-RUNNER:browser;

console.log( String.fromCharCode(97) );  // a
console.log( String.fromCharCode(98) );  // b
console.log( String.fromCharCode(122) ); // z

console.log( String.fromCharCode(65) );  // A
console.log( String.fromCharCode(66) );  // B
console.log( String.fromCharCode(90) );  // Z

1. String.fromCharCode method examples

This approach is used to get existing character by code.

1.1. Small letters example

// ONLINE-RUNNER:browser;

for (var i = 0; i < 26; ++i) {
  	var code = i + 97;
	var letter = String.fromCharCode(code);
  	
  	console.log(code + ' : ' + letter);
}

2.2. Big letters example

// ONLINE-RUNNER:browser;

for (var i = 0; i < 26; ++i) {
  	var code = i + 65;
	var letter = String.fromCharCode(code);
  	
  	console.log(code + ' : ' + letter);
}

2. Custom alphabet example

2.1. Text alphabet example

// ONLINE-RUNNER:browser;

var alphabet = ''
    + 'abcdefghijklmnopqrstuvwxyz' 
	+ 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';

for (var i = 0; i < alphabet.length; ++i) {
  	var code = i;

	var letter = alphabet[code];
	//var letter = alphabet.charAt(code);
  	
  	console.log(code + ' : ' + letter);
}

2.2. Map / dictionary alphabet example

Map helps to assign specific codes for characters.

// ONLINE-RUNNER:browser;

var alphabet = {
     "65": "A",  "66": "B",  "67": "C",  "68": "D",  "69": "E", 
     "70": "F",  "71": "G",  "72": "H",  "73": "I",  "74": "J", 
     "75": "K",  "76": "L",  "77": "M",  "78": "N",  "79": "O", 
     "80": "P",  "81": "Q",  "82": "R",  "83": "S",  "84": "T", 
     "85": "U",  "86": "V",  "87": "W",  "88": "X",  "89": "Y", 
     "90": "Z",

     "97": "a",  "98": "b",  "99": "c", "100": "d", "101": "e", 
    "102": "f", "103": "g", "104": "h", "105": "i", "106": "j", 
    "107": "k", "108": "l", "109": "m", "110": "n", "111": "o", 
    "112": "p", "113": "q", "114": "r", "115": "s", "116": "t", 
    "117": "u", "118": "v", "119": "w", "120": "x", "121": "y", 
    "122": "z"
};

for (var i = 0; i < 128; ++i) {
  	var code = i.toString();

    if (code in alphabet) {
	    var letter = alphabet[code];
  	
  	    console.log(code + ' : ' + letter);
    }
}

 

0 contributions

Suggested wiki articles:

Suggested findings

Let's do the work and have some fun
  • Dirask is online IT community for professionals and hobbyist to share their knowledge and help each other in extraordinary easy way. ❤ 💻 🙂
  • We welcome everyone,
    no matter what the experience,
    no matter how basic the question is,
    we will help you. 👍 ✔ 🦄
Read more