Print ASCII Value of a Character in JavaScript

ASCII is a character encoding standard that has been a foundational element in computing for decades. It is used to define characters in a computer. There is a huge table of ASCII values. To print the values in JavaScript In this post, we print the ASCII code of a specific character. One can print the ASCII code for the specific character in JavaScript using several methods which are as follows:

Using charCodeAt() function

The charCodeAt() function defined in JavaScript returns the specific Unicode number with a specific index of the string.

Example: To demonstrate printing the ASCII code using the charCodeAt() method in JavaScript.

let char1 = "B";
let asciiValue1 = char1.charCodeAt(0);
console.log("ASCII value of '" + char1 + "': " + asciiValue1);

ASCII value of 'B': 66

Using charPointAt() function

The charPointAt() function also returns the unicode of the string. It returns the specific Unicode number with a specific index of the string.

Example: To demonstrate printing one ASCII character from the string using the charPointAt() function in JavaScript.

let text = "Geeks for Geeks";
let code = text.codePointAt(1);

console.log(" ASCII Number = " + code);

 ASCII Number = 101

Using Array.from() method

To find the full string ascii values using the charPointAt() method along with Array.from() method. First we convert string into the array using the Array.from() method then convert each array element into the ASCII value.

Example: To demonstrate printing the whole string ascii values using the Array.from() method.

let inputString = "GeeksforGeeks";
let asciiValues = Array.from(inputString, (char) => {
  return char.charCodeAt(0);
});

console.log(
  "ASCII values of characters in '" +
    inputString +
    "': " +
    asciiValues.join(", ")
);

ASCII values of characters in 'GeeksforGeeks': 71, 101, 101, 107, 115, 102, 111, 114, 71, 101, 101, 107, 115

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Article Tags :

• JavaScript
• Web Technologies