Node.js Buffer.readUInt8() Method
The Buffer.readUInt8() method is used to read an unsigned 8 bit integer from a Buffer object.
Syntax:
buffer.readUInt8( offset )
Parameters: This method accepts a single parameter offset which specifies the position of buffer object. It represents the number of bytes to skip before starting to read. The value of offset lies between the range 0 to buffer.length – 1. The default value is 0.
Return value: It returns the integer value specified by the offset.
Example 1:
const ob=Buffer.from([1, 2, 3]);
console.log(ob.readUInt8(0));
console.log(ob.readUInt8(1));
console.log(ob.readUInt8(4));
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Output:
1
2
RangeError [ERR_OUT_OF_RANGE]: The value of "offset" is out of range.
It must be >= 0 and <= 2. Received 3
at boundsError (internal/buffer.js:53:9)
at Buffer.readUInt8 (internal/buffer.js:141:5)
Example 2:
const ob1 = Buffer.from([0X32, 0X44, 0X48]);
console.log(ob1.readUInt8(0));
console.log(ob1.readUInt8(2));
const t = Buffer.from( "abc" );
console.log(t.readUInt8(0));
|
Output:
68
72
97
Note: The above program will compile and run by using the node index.js
command.
Reference: https://nodejs.org/api/buffer.html#buffer_buf_readuint8_offset
Last Updated :
13 Oct, 2021
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