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Convert character to ASCII code
To convert characters to ASCII, you can use the charCodeAt() string method in JavaScript.
Consider this string,
// string
const str = "Hello John!";
Let's convert the first character of the above string using the charCodeAt() method like this,
// string
const str = "Hello John!";
// convert first character
// of string to ascii by passing the
// index number of character in the string
// as an argument to the method
const asciiVal = str.charCodeAt(0);
console.log(asciiVal); // 72
- The method accepts a valid index number in the string to get the ASCII value for that character.
See this example live in JSBin.
Convert ASCII code to character
To convert ASCII code to a character, you can use the fromCharCode() Static method in the String class in JavaScript.
Let's say we have ASCII code 65 like this,
// ASCII
const asciiCode = 65;
Now let's convert this ASCII code to a character using the String.fromCharCode() static method like this,
// ASCII
const asciiCode = 65;
// convert ASCII code to character
// by passing the code as an argument
// to the method
const character = String.fromCharCode(asciiCode);
console.log(character); // "A"
See this example live in JSBin
You can also pass more than one ascii code as arguments to the method like this,
// ASCII
const asciiCode = 65;
const asciiCode1 = 66;
const asciiCode2 = 67;
// convert ASCII code to character
// by passing the ascii codes
// as arguments to the method
const character = String.fromCharCode(asciiCode, asciiCode1, asciiCode2);
console.log(character); // "ABC"
See this example live in JSBin.
- The method accepts valid ASCII codes as arguments to convert to the appropriate character.