How to Convert Decimal to Hexadecimal (and Back) in JavaScript?

How to Convert Decimal to Hexadecimal in JavaScript

Converting decimal values to their hexadecimal equivalents in JavaScript is a common task in web development and computer programming. Hexadecimal, or base-16, is a numeral system that uses 16 letters and numbers (0-9, A-F) to represent values.

To convert a decimal value to its hexadecimal equivalent in JavaScript, you can use the toString() method. This method converts the number to a string representation in the specified base. The following code snippet demonstrates how to convert decimal values to hexadecimal:

const decimalValue = 15;
const hexString = decimalValue.toString(16);
console.log(hexString); // logs "f"

In this example, the toString() method converts the decimal value 15 to its hexadecimal equivalent, which is "f".

To convert hexadecimal values back to their decimal equivalents, you can use the parseInt() function with a base of 16. The following code snippet shows how to convert hexadecimal strings to decimal numbers:

const hexString = "f";
const decimalValue = parseInt(hexString, 16);
console.log(decimalValue); // logs 15

By utilizing the toString() and parseInt() functions, you can easily convert between decimal and hexadecimal values in JavaScript.

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