node
JavaScript run time enviroment. Usully JS is ran by the browser.
Node helps run javascript code outside the browser while also providing tools to
make coding in js more streamlined.node
JavaScript run time enviroment. Usully JS is ran by the browser.
Node helps run javascript code outside the browser while also providing tools to
make coding in js more streamlined.node
const http = require('http');
const hostname = '127.0.0.1';
const port = 3000;
const server = http.createServer((req, res) => {
res.statusCode = 200;
res.setHeader('Content-Type', 'text/plain');
res.end('Hello World');
});
server.listen(port, hostname, () => {
console.log(`Server running at http://${hostname}:${port}/`);
});node
apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/v3.10/main/ nodejsnode
// DATA
const airports = 'PHX BKK OKC JFK LAX MEX EZE HEL LOS LAP LIM'.split(' ');
const routes = [
['PHX', 'LAX'],
['PHX', 'JFK'],
['JFK', 'OKC'],
['JFK', 'HEL'],
['JFK', 'LOS'],
['MEX', 'LAX'],
['MEX', 'BKK'],
['MEX', 'LIM'],
['MEX', 'EZE'],
['LIM', 'BKK'],
];
// The graph
const adjacencyList = new Map();
// Add node
function addNode(airport) {
adjacencyList.set(airport, []);
}
// Add edge, undirected
function addEdge(origin, destination) {
adjacencyList.get(origin).push(destination);
adjacencyList.get(destination).push(origin);
}
// Create the Graph
airports.forEach(addNode);
routes.forEach(route => addEdge(...route))node
web3.eth.getNodeInfo().then(console.log);
> "Mist/v0.9.3/darwin/go1.4.1"node
struct node {
int data;
struct node *leftChild;
struct node *rightChild;
};node
As an asynchronous event-driven JavaScript runtime, Node.js is designed to build scalable network applications. In the following "hello world" example, many connections can be handled concurrently. Upon each connection, the callback is fired, but if there is no work to be done, Node.js will sleep.Copyright © 2021 Codeinu
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