Node.js Buffer.isBuffer() Method
Buffer is a temporary memory storage that stores the data when it is being moved from one place to another. It is like an array of integers.
The Buffer.isBuffer() method checks whether the provided object is a buffer or not.
Syntax:
Buffer.isBuffer( obj )
Parameters: This method accepts a single parameter obj which needs to be checked if it is a buffer or not.
Return Value: This method returns a Boolean Value, true if the object is buffer, otherwise returns false.
Example 1: The below example illustrates the use of Buffer.isBuffer() Method in Node.js:
// Node.js program to demonstrate the
// Buffer.isBuffer() Method
const buffer = Buffer.from('GeeksForGeeks');
console.log(Buffer.isBuffer(buffer));
Output
true
Example 2: The below example illustrates the use of Buffer.isBuffer() Method in Node.js:
// Node.js program to demonstrate the
// Buffer.isBuffer()) Method
const buf1 = "GeeksforGeeks";
console.log(Buffer.isBuffer(buf1));
const buf2 = new Buffer(4);
for (let i = 0; i < 4; i++) {
buf2[i] = i + 97;
}
// Prints: abcd
// as 97, 98, 99, 100 are the ASCII
// values of these chars respectively
console.log(buf2.toString());
console.log(Buffer.isBuffer(buf2));
// Prints: true
Output:
false abcd true
Note: The above program will compile and run by using the node index.js command.
Reference: https://nodejs.org/api/buffer.html#buffer_class_method_buffer_isbuffer_obj
