express

问题 So I want to make changes on my front-end html file from my node.js backend. How would I do so? (Any suggestions with examples would be greatly appreciated) Here's where I would like to change it: router.post('/change', function(req, res){ console.log(req.body.list); //modify html DOM here!! //preferably using jQuery }) 回答1: You can't modify from the node side in the way that I think your're trying to do. You can send back a response to the client side, and on that response, you can trigger a

问题 Here is a simplified version of my cluster Express app: /index.js module.exports = process.env.CODE_COV ? require('./lib-cov/app') : require('./lib/app'); /lib/app.js var cluster = require('cluster'), express = require('express'), app = module.exports = express.createServer(); if (cluster.isMaster) { // Considering I have 4 cores. for (var i = 0; i < 4; ++i) { cluster.fork(); } } else { // do app configurations, then... // Don't listen to this port if the app is required from a test script.

问题 Here is a simplified version of my cluster Express app: /index.js module.exports = process.env.CODE_COV ? require('./lib-cov/app') : require('./lib/app'); /lib/app.js var cluster = require('cluster'), express = require('express'), app = module.exports = express.createServer(); if (cluster.isMaster) { // Considering I have 4 cores. for (var i = 0; i < 4; ++i) { cluster.fork(); } } else { // do app configurations, then... // Don't listen to this port if the app is required from a test script.

问题 Here is a simplified version of my cluster Express app: /index.js module.exports = process.env.CODE_COV ? require('./lib-cov/app') : require('./lib/app'); /lib/app.js var cluster = require('cluster'), express = require('express'), app = module.exports = express.createServer(); if (cluster.isMaster) { // Considering I have 4 cores. for (var i = 0; i < 4; ++i) { cluster.fork(); } } else { // do app configurations, then... // Don't listen to this port if the app is required from a test script.

问题 I need to dynamically load/render part of a page in nodejs (v1.8.15) with express (>3.0) framework. Generally, I want to create a single-page app. I have a menu at the top of the page with links. Clicking on the links will change the content below, as in AJAX page loading. For example: >home|login|signup|chat ..content for home.. If I press the 'signup' link: home|login|>signup|chat ..content for signup.. In express I have routes on the server: var express = require('express'); var app =

问题 I need to dynamically load/render part of a page in nodejs (v1.8.15) with express (>3.0) framework. Generally, I want to create a single-page app. I have a menu at the top of the page with links. Clicking on the links will change the content below, as in AJAX page loading. For example: >home|login|signup|chat ..content for home.. If I press the 'signup' link: home|login|>signup|chat ..content for signup.. In express I have routes on the server: var express = require('express'); var app =

问题 I have a long running process which needs to send data back at multiple stages. Is there some way to send back multiple responses with express.js res.send(200, 'hello') res.send(200, 'world') res.end() but when I run curl -X POST localhost:3001/helloworld all I get is hello How can I send multiple responses or is this not possible to do with express? 回答1: Use res.write() . res.send() already makes a call to res.end() , meaning you can't write to res anymore after a call to res.send (meaning

问题 where do i close the mysql connection? I need to run queries in sequence. I am writing code that looks like this at present: var sqlFindMobile = "select * from user_mobiles where mobile=?"; var sqlNewUser = "insert into users (password) values (?)"; //var sqlUserId = "select last_insert_id() as user_id"; var sqlNewMobile = "insert into user_mobiles (user_id, mobile) values (?,?)"; connection.connect(function(err){}); var query = connection.query(sqlFindMobile, [req.body.mobile], function(err,

问题 where do i close the mysql connection? I need to run queries in sequence. I am writing code that looks like this at present: var sqlFindMobile = "select * from user_mobiles where mobile=?"; var sqlNewUser = "insert into users (password) values (?)"; //var sqlUserId = "select last_insert_id() as user_id"; var sqlNewMobile = "insert into user_mobiles (user_id, mobile) values (?,?)"; connection.connect(function(err){}); var query = connection.query(sqlFindMobile, [req.body.mobile], function(err,

问题 I have backend based on express + mongoose. File structure is: - /models -- item.js - /node.modules -- ... - server.js - package-lock.json - package.json And regular create-react-app based folder for front-end: - /src -- /assets --- index.css -- /components --- Somecomponent.js -- /containers --- App.js -- /reducers --- somereducers.js - /node.modules -- ... -- index.js -- registerServiceWorker.js - .gitignore - package-lock.json - package.json I want to use it in proper way together. I