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Node.js – v8.serializer.writeDouble() Method
The v8.serializer.writeDouble() method is used for writing a double value to the internal buffer. This method is for use inside the serializer._writeHostObject().
Syntax
v8.serializer.writeDouble(value)
Parameters
It takes a single parameter −
value − This parameter takes input for the double value that needs to be written inside the internal buffer.
Example 1
Create a file with the name "writeDouble.js" and copy the following code snippet. After creating the file, use the command "node writeDouble.js" to run this code.
// v8.serializer.writeDouble() Demo Example
// Importing the v8 module
const v8 = require('v8');
// Defining a new object for v8 serializer
const serializer = new v8.Serializer();
// Printing the double number in the internal buffer
console.log(serializer.writeDouble(12345.6789));
// Releasing buffer to print the value on console
console.log(serializer.releaseBuffer());Output
C:\home
ode>> node writeDouble.js undefined <Buffer a1 f8 31 e6 d6 1c c8 40>
Example 2
Let’s have a look at one more example -
// v8.serializer.writeDouble() Demo Example
// Importing the v8 module
const v8 = require('v8');
// Defining a new object for v8 serializer
const serializer = new v8.Serializer();
function writeDouble(data) {
serializer.writeDouble(data);
console.log(data);
console.log(serializer.releaseBuffer());
}
writeDouble(12.22);
writeDouble(345.90);
writeDouble(0.1);Output
C:\home
ode>> node writeDouble.js 12.22 <Buffer 71 3d 0a d7 a3 70 28 40> 345.9 <Buffer 66 66 66 66 66 9e 75 40> 0.1 <Buffer 9a 99 99 99 99 99 b9 3f>
Updated on: 18-Aug-2021
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