Node.js Buffer.writeInt16LE() Method
Last Updated :
13 Oct, 2021
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The Buffer.writeInt16LE() method is an inbuilt application programming interface of class Buffer within Buffer module which is used to write a valid signed 16-bit integer to buffer at the specified offset with specified little endian format.
Syntax:
javascript
Output:
javascript
Output:
Buffer.writeInt16LE( value, offset )Parameters: This method accept two parameters as mentioned above and described below:
- value: The valid signed 16-bit integer to be written into the buffer.
- offset: It denotes the number of bytes to be skipped before starting to write to buffer. The value of offset lies within the range 0 <= offset <= buf.length - 2. The default value of offset is 0.
// Node.js program to demonstrate the
// Buffer.writeInt16LE() method
// Creating a buffer
const buf = Buffer.allocUnsafe(10);
// Using Buffer.writeInt16LE() method
buf.writeInt16LE(0x0114, 0);
// Display the buffer
console.log(buf);
// Using Buffer.writeInt16LE() method
buf.writeInt16LE(0x1015, 2);
// Display the buffer
console.log(buf);
// Using Buffer.writeInt16LE() method
buf.writeInt16LE(0x0016, 8);
// Display the buffer
console.log(buf);
// Using Buffer.writeInt16LE() method
buf.writeInt16LE(0x0217, 6);
// Display the buffer
console.log(buf);
// Using Buffer.writeInt16LE() method
buf.writeInt16LE(0x0518, 4);
// Display the result
console.log(buf);
<Buffer 14 01 9b 02 00 00 00 00 a8 79> <Buffer 14 01 15 10 00 00 00 00 a8 79> <Buffer 14 01 15 10 00 00 00 00 16 00> <Buffer 14 01 15 10 00 00 17 02 16 00> <Buffer 14 01 15 10 18 05 17 02 16 00>Example 2:
// Node.js program to demonstrate the
// Buffer.writeInt16LE() method
// Creating a buffer
const buf = Buffer.allocUnsafe(6);
// Using Buffer.writeInt16LE() method
buf.writeInt16LE(0x2211, 0);
// Display the buffer
console.log(buf);
// Using Buffer.writeInt16LE() method
buf.writeInt16LE(0x4433, 2);
// Display the buffer
console.log(buf);
// Using Buffer.writeInt16LE() method
buf.writeInt16LE(0x6655, 4);
// Display the buffer
console.log(buf);
<Buffer 11 22 00 00 00 00> <Buffer 11 22 33 44 00 00> <Buffer 11 22 33 44 55 66>Note: The above program will compile and run by using the
node index.js command.
Reference: https://nodejs.org/dist/latest-v13.x/docs/api/buffer.html#buffer_buf_writeint16le_value_offset
