Convert Character to Ascii Code in Javascript

Convert Character to ASCII Code in JavaScript

As a JavaScript developer, you may often come across situations where you need to convert a character to its corresponding ASCII code. Whether you need to perform string manipulation or implement specific algorithms, knowing how to convert characters to ASCII codes can be extremely useful. In this article, we will explore different approaches to achieve this in JavaScript.

1. Using the charCodeAt() method

The charCodeAt() method is a built-in JavaScript function that returns the ASCII value of a character at a specified index within a string. You can use this method to convert a single character to its ASCII code.

const character = 'A';
const asciiCode = character.charCodeAt(0);
console.log(asciiCode); // Output: 65

In the above example, we declare a variable character and assign it the value ‘A’. By calling charCodeAt(0) on the character variable, we obtain the ASCII code for the character ‘A’, which is 65.

2. Using the ASCII table lookup

If you need to convert multiple characters to their corresponding ASCII codes, you can create a lookup table. This approach can be useful when you want to convert a whole string or process a large number of characters efficiently.

function convertToAscii(string) {
  const asciiCodes = [];
  for (let i = 0; i < string.length; i++) {
    asciiCodes.push(string.charCodeAt(i));
  }
  return asciiCodes;
}

const inputString = 'Hello, World!';
const asciiValues = convertToAscii(inputString);
console.log(asciiValues); // Output: [72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33]

In the above example, we define a function convertToAscii() that takes a string as input. Inside the function, we iterate over each character in the string using a for loop. For each character, we call charCodeAt() to obtain its ASCII code and push it into the asciiCodes array. Finally, we return the array of ASCII codes.

We then declare a variable inputString with the value 'Hello, World!' and call the convertToAscii() function passing in the inputString. The function returns an array of ASCII values, which we store in the asciiValues variable. Printing asciiValues to the console gives us the ASCII codes for each character in the input string.

Conclusion

Converting characters to ASCII codes is a common task in JavaScript development. By using the charCodeAt() method or creating a lookup table, you can easily obtain the ASCII codes for individual characters or entire strings. Choose the approach that best suits your specific requirements and start leveraging the power of ASCII codes in your JavaScript projects.

Convert Character to Ascii Code in Javascript