How to use Buffer.isBuffer() in Node.js
A buffer is an array-like object that stores a fixed-length sequence of bytes.
The isBuffer() method belongs to the Buffer class and tests whether an object is a buffer or not.
Prototype
Parameters
The Buffer.isBuffer() function accepts an object as a single parameter.
Return value
The Buffer.isBuffer() function returns true if the given object is a buffer and returns false if the given object is not a buffer.
Example
The following example demonstrates how to use the Buffer.isBuffer() function in Node.js.
// initialize buffervar buf = Buffer.from([11,22,33,44])var buf1 = Buffer.alloc(9)// initialize listvar buf2 = [11,22,33,44]// initialize buffervar buf3 = Buffer.from('Educative.io')// initialize stringvar buf4 = "Educative.io"console.log(Buffer.isBuffer(buf))console.log(Buffer.isBuffer(buf1))console.log(Buffer.isBuffer(buf2))console.log(Buffer.isBuffer(buf3))console.log(Buffer.isBuffer(buf4))
This example creates the buffers through the Buffer.from() and Buffer.alloc() functions, which store the inputs as bytes in the buffer. The example tests the isBuffer() function on a string, a list, and buffers.
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