I have created a Server with Node.Js here is the Code
const http = require('http');
const server = http.createServer(function (req, res) {
res.statusCode = 200;
res.setHeader('Content-Type','text/html');
res.write(<input type="number" id="a">);
res.write("<style> #a {text-align:center} </style>");
/*Reading function */
res.end();
});
server.listen(8000);
Is there a way to get the innerHTML of the input(From the Client)?
Maybe u can help me :)
(For further explaination: The client should open the website, write something in the number field, then i want the innerHTML of the number field send to the server)
Related
I am writing a server that is meant to serve and receive files. It is written in node.js, using express.js. I also have a client, also written in node, which is meant to send a request to the server and receive the files on the server.
Server-side
const express = require("express");
const app = express();
const file = "./samplefiles/Helloworld.txt";
app.get("/", (res)=>{
res.download(file);
});
module.exports = app; //this exports to server.js
const http = require("http");
const app = require("./app.js);
const port = 8080;
const server = http.createServer(app);
server.listen(port, () => {
console.clear();
console.log("server running");
})
Client-side
const request = require("request");
request.get("http://localhost:8080/", (req, body) => {
console.log(body);
console.log(res);
});
If I try to access it by my browser I am asked what I want to do with the file, it works. However, Is I run my client-side code it prints the body and the res(being null). I expected the file name and it's content to be in the body but only the content of the file was in the body.
I want to receive the whole file, is possible, or at least get the name of it so that I can "make" a copy of it on the client-side.
Change code your server side to:
const port = 8080;
const express = require("express");
const app = express();
const path = require('path');
app.get("/", function(req, res){
res.sendFile(path.join(__dirname, 'app.js'));
});
app.listen(port, () => {
console.clear();
console.log("server running");
});
Change code your client-side to:
var request = require('request');
request('http://localhost:8080/', function (error, response, body) {
console.log('error:', error); // Print the error if one occurred
console.log('statusCode:', response && response.statusCode); // Print the response status code if a response was received
console.log('body:', body); // Print data of your file
});
You need to install request npm i request for client side
You can serve up any files you want with express static method:
app.use(express.static('public'))
in this case just put all the files you want to serve in folder called public and then you can access it by localhost:8080/Helloworld.txt.
I ended up working around it.
I sent the file name as a header and was thus able to create a replica of the file I wanted to download using the body info and the filenameheader.
I am trying to make an automated SMS text app using Twilio and I am having a hard time connecting it to my localhost. I keep receiving a "cannot /get" error. Basically, I am trying to send and receive messages using a webhook. Can someone take a look and see what's going on? This code was given to me by Twilio:
const http = require('http');
const express = require('express');
const MessagingResponse = require('twilio').twiml.MessagingResponse;
const app = express();
app.post('/sms', (req, res) => {
const twiml = new MessagingResponse();
twiml.message('The Robots are coming! Head for the hills!');
res.writeHead(200, {'Content-Type': 'text/xml'});
res.end(twiml.toString());
});
http.createServer(app).listen(2001, () => {
console.log('Express server listening on port 2001');
});
Looks like you've misplaced post but wanted get (since you're trying to access the route via a get request)
change
app.post('/sms' ...
to
app.get('/sms' ...
I'm building a react app
In one component I'm writing this GET request which works:
In another component I'm writing this POST request:
Which then returns this 404 error:
And I have no idea how my GET works but my POST returns 404:not found when I'm requesting the same file both times?
UPDATE:
I'm running a node.js server now but it's a bit of a frankenstein's monster as this really isn't an area I have an understanding of. Does anyone know what I'm doing wrong?
// Server setup from node.js website
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\n');
});
server.listen(port, hostname, () => {
console.log(`Server running at http://${hostname}:${port}/`);
});
// Trying to listen for data from React app to feed into JSON (broken)
var express = require("express");
var myParser = require("body-parser");
var app = express();
app.use(myParser.urlencoded({extended : true}));
app.post("/scene-setup.json", function(request, response) {
console.log(request.body); //This prints the JSON document received (if it is a JSON document)
});
app.listen(3001);
// Updating JSON file with "obj" (working)
var jsonfile = require('jsonfile')
var file = './scene-setup.json'
var obj = {name: 'JP'}
jsonfile.writeFile(file, obj, function (err) {
console.error(err)
})
Axios is used for making HTTP requests. So, you should have a backend server running that can handle these requests. I am not sure what exactly is the data that you want to save. If you need access to that data, should be saving it on the backend.
If you want to save some data just on the client side, HTML5 filesystem API might be something you want to look at. It can manage some data in the limited sandboxed part of user's filesystem.
I am still learning nodejs and was listening to daniel shiffman's video on how to setup the twitter api and how to get data from it.
Now, the code was working and I was getting back data, but it was all happening in the terminal.
What I wanted to do was to show the twitter data in my browser and wasnt sure how to do that. I tried searching for it, but didnt get much help.
So, I just tried doing whatever I knew and it worked and therefore I am still not sure that the code I have written is the proper way to do this.
I'd love to know if there's a mistake somewhere or If there's some other way I should have done this.
Anyways, here's the code
var http = require('http');
var express = require('express');
var app = express();
var port = 8080; // Use 8080 for local development because you might already have apache running on 80
console.log('The bot is starting');
var Twit = require('twit');
var config = require('./config');
console.log(config);
var T = new Twit(config);
var params ={
q:'spider',
count:5
}
T.get('search/tweets', params, gotData);
function gotData(err, data, response) {
var tweets = data.statuses;
app.get('/',function(req,res){
req=params;
var tweetz='';
for(var i=0;i<tweets.length;i++){
console.log(tweets[i].text+'================================');
tweetz = '<p>'+ tweetz+tweets[i].text+'</p>';
}
res.send(tweetz);
});
}
app.listen(port, function () {
console.log(`app listening on port ${port}!`);
});
The mistake you are doing is declaring app.get inside the callback.
app.get("/", function....) is a route which responds to GET requests which means whenever a user requests for "/", the callback which is the function(req, res) is called.
So the code should be:
app.get("/", function(req, res) {
// User requested for "/" route, now get tweets
T.get('search/tweets', params, function(err, data) {
//Tweets received, now send the tweets to the user
var tweets = data.statuses;
return res.send(tweets);
})
})
Then go to http://localhost:8080/ and it should work.
I am learning Node.JS and this is the most commonly available example of server by Node.JS
// Load the http module to create an http server.
var http = require('http');
// Configure our HTTP server to respond with Hello World to all requests.
var server = http.createServer(function (request, response) {
// var name=request.getParameter('name');
// console.log(name);
console.log('res: ' + JSON.stringify(response.body));
response.writeHead(200, {"Content-Type": "text/plain"});
response.end("Hello World\n");
});
// Listen on port 8000, IP defaults to 127.0.0.1
server.listen(8000);
Now when I am executing this from console it works fine, and from browser also it works fine, by hitting the URL: localhost:8000
But now I also want to send some parameters to this server, so I tried localhost:8000/?name=John and few more URL's but none of them work, Can anyone help me?
Thanks in advance!!
try:
var url = require('url');
var name = url.parse(request.url, true).query['name'];
Node's HTTP API is rather low-level compared to other frameworks/environments that you might be familiar with, so pleasantries like a getParameter() method don't exist out of the box.
You can get the query-string from the request's url, which you can then parse:
var http = require('http');
var url = require('url');
var server = http.createServer(function (request, response) {
var parsedUrl = url.parse(request.url, true);
var query = parsedUrl.query;
console.log(query.name);
// ...
});