vue is a page that uses index.html as the entry by default, and app.js will be inserted into the page during compilation ejsjs; 1,webpack,app.jshtml2,ejs address of Code Cloud: https: gitee.com nana5238 ex... think about this thing for the firs...
I have an Internet of things terminal device that sends data to the designated port of the cloud server (including device number, base station information, light intensity temperature, etc.). Now I want to use nodejs to write a listener on the server sid...
function http_get (ip, port) { let WAN = false; http.ClientRequest var data = { msg: can you hear me? , time: new Date().getTime() }; var content = qs.stringify(data); var options = { host : ip,...
-problem description recently learned to use express and mongodb; to do demo examples, and found a problem, that is, every time a request is sent from the page to add data to the table, the first time is normal, the second time it is wrong? -correspo...
when res.body is undefined through the query, it is because body-parser is not loaded, but I do not have such a problem, but I also return undefined. What the heck is it? server.js body-parser const express = require( express ); const mongoose = ...
the front end uses the $.ajax method of Jquery, and uses the way of jsop to obtain the value of the back end across domains. The backend is built with Node+express, and the value of the backend can be obtained normally. But if the ajax takes the paramet...
add the return statement and you will report an error, but if you don t add it, you will ok,. Why? router.post( aaaa , upload.any(), function (req, res, next) { sql.getConnection(function (err, connection) { if (err) throw err; ...
problem description what s the difference between creating session through the req.session.regenerate method and req.session.username = username? I have used these two methods respectively, but I don t find any difference. There are similar problem...
use express-http-proxy to delegate all api requests from the front end to another service, but the front end issues an api request. Time error connect ECONNREFUSED: 127.0.0.1 api 6667 at first I thought that the port was occupied or the mongodb servic...
use express-http-proxy to delegate all api requests from the front end to another service, but the front end issues an api request. Time error connect ECONNREFUSED: 127.0.0.1 api 6667 at first I thought that the port was occupied or the mongodb servic...
use express-http-proxy to delegate all api requests from the front end to another service, but the front end issues an api request. Time error connect ECONNREFUSED: 127.0.0.1 api 6667 at first I thought that the port was occupied or the mongodb servic...
var express = require( express ); var app = express(); app.use( a ,function(req,res,next){ console.log( 111 ); next(); }); app.all( a ,function(req,res,next){ console.log( 222 ); }); I only know that aura app.use app.use () ...
var express = require( express ); var app = express(); app.use( a ,function(req,res,next){ console.log( 111 ); next(); }); app.all( a ,function(req,res,next){ console.log( 222 ); }); I only know that aura app.use app.use () ...
novice rookies started to use express + webpack to build, and encountered the following problem: the front end packages the files through webpack-dev-middleware and stores them under the output directory. If you want to return the template through expr...
backend set up by express Cross-domain request. The request header of set-cookie cannot be seen in chrome browser network, but edge can. however, although chrome cannot view the set-cookie, the background of the second request can read the previously ...
server.js const express = require( express ); const expressValidator = require( express-validator ); const mongoose = require( mongoose ); const bodyParser = require( body-parser ); const app = express(); const port = 5846; ** * * cons...
A question in the learning process that cannot be answered in the official jade pug documentation. variables defined in express routing are passed to the corresponding jade template and output to html is normal, but how to output the values in variable...
I wrote the code according to the official website, but every get request appears GET undefined 404 I have no idea why get undefined ...
for example ejs. a.b a = undefined at this time ejs will report an error so the question is whether nodejs can catch this error. ...
how do I get the app.locals object in express routing? as follows, router.get( user logout , (req, res) => { delete req.session.user delete app.locals.user res.redirect( ) }) will report an error: the...
sometimes, it is found that there are still not enough cases of Vue, wheels. But there are a lot of native js. But there are all kinds of problems when it is used in vue-cli, either undefined, or hook function is easily affected by life cycle and data up...
problem description svg creates rain effect. When calling raindrop function with timer setInterval, raindrop animation will not run. Calling raindrop function alone or several times can run animation and solve . related codes <svg width= 100% ...
element ui s three-level navigation menu. When you click on any second-level navigation, all three-level navigation will be expanded . as shown in the figure, when I click on a secondary menu such as a camera, both the wifi and the camera submenus w...
Integer a = 1; Integer b = 2; Long c = 3L; c = a compiler error will result in the error that int cannot be converted to long System.out.println (compiled normally, resulting in true Why? I know that when int and long add up, they both turn i...
I jump from page A to page B with parameters this.props.history.push({ pathname: send_msg , state: { query: obj } }) you can get this.props.location.state Bthis.props.location.stateundefined on the B page at this time. ...