Sometimes, we want to read a 3 bytes Buffer as an integer with JavaScript and Node.js.
In this article, we’ll look at how to read a 3 bytes Buffer as an integer with JavaScript and Node.js.
How to read a 3 bytes Buffer as an integer with JavaScript and Node.js?
To read a 3 bytes Buffer as an integer with JavaScript and Node.js, we can use the readUintBE method.
For instance, we write:
const buffer = Buffer.from('hello world', 'utf8');
const decimal = buffer.readUIntBE(0, 3);
console.log(decimal)
to create a buffer with Buffer.from.
Then we call buffer.readUIntBE with 0 and 3 to read the 3 bytes and convert it into a decimal number.
Therefore, decimal is 6841708.
Conclusion
To read a 3 bytes Buffer as an integer with JavaScript and Node.js, we can use the readUintBE method.
