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What does process mean in JavaScript?
Source Code: lib/process.js. The process object provides information about, and control over, the current Node.js process.
What is the process module?
A Process Module is a set of process elements that can be added to other processes. A process module can also contain other process modules, so process modules can be used to build a process hierarchy or process architecture. Typical process modules are Requirements Engineering, Design, or Project Management.
What is child process in node JS?
Usually, Node. js allows single-threaded, non-blocking performance but running a single thread in a CPU cannot handle increasing workload hence the child_process module can be used to spawn child processes. The child processes communicate with each other using a built-in messaging system.
How use NodeJS process?
- process. on(‘exit’, function(code) { // Following code will never execute. setTimeout(function() { console.
- // Printing to console process. stdout. write(“Hello World!”
- // Print the current directory console. log(‘Current directory: ‘ + process. cwd()); // Print the process version console.
How do I kill a node js process?
To kill the main Node process, we just pass the pid of the main process. To see this in operation, replace the setTimeout function in our previous code example with this version that uses process. kill . This method also works in the REPL as well as in Node.
What is process stdout?
process. stdout. write continuously prints the information as the data being retrieved and doesn’t add a new line. console.
Is node js and API?
Node. js is a very popular JavaScript framework. It shines most when used to build back-end services and APIs.
What are the key features of Node js?
Features of Node. js
- Asynchronous and Event Driven − All APIs of Node. js library are asynchronous, that is, non-blocking.
- Very Fast − Being built on Google Chrome’s V8 JavaScript Engine, Node. js library is very fast in code execution.
- Single Threaded but Highly Scalable − Node.
- No Buffering − Node.
- License − Node.
What is the process object in Node.js?
Node.js – Process. The process object is a global object and can be accessed from anywhere. There are several methods available in a process object.
How does the message event work in Node.js?
If the Node.js process is spawned with an IPC channel (see the Child Process and Cluster documentation), the ‘message’ event is emitted whenever a message sent by a parent process using childprocess.send() is received by the child process. The message goes through serialization and parsing.
When to call process.exitcode in Node.js?
In most situations, it is not actually necessary to call process.exit() explicitly. The Node.js process will exit on its own if there is no additional work pending in the event loop. The process.exitCode property can be set to tell the process which exit code to use when the process exits gracefully.
What does process.getter do in Node.js?
An Object containing the JavaScript representation of the configure options that were used to compile the current node executable. This is the same as the “config.gypi” file that was produced when running the ./configure script. The PID of the process. Getter/setter to set what is displayed in ‘ps’.