promise in node js

Node. js uses the Google Chrome V8 engine, which has good performance and provides many system-level APIs, such as file operations and network programming. Node. js is a comprehensive background runtime that provides many functions that can be implemented by other languages for Javascript. Today, let's take a look at N

This article mainly introduces how to use Meteor with Node. js Code example of real-time chat application, Node. as an asynchronous framework, js is used to compile real-time applications. For more information, see Derby. the framework for js comparison is Meteor.

Node. js blog instance (7) Paging function, node. js Paging Original tutorial. Adds the paging function to the homepage and user pages of a blog. Set: up to 10 articles can be displayed on each page of the home page and user page.Here the skip and limit operations of mongodb are used.Open post.

Getting started with Node. js-how to upload a node. js File Author: zhanhailiang Date: This article describes how to use Node. js to upload files. 1. initialize the project information: npm init [root@~/wade/nodejs/nodejs-upload-i

Node. js notes (5) Talk about routing and node. js notes about Routing The routing usage problem is also mentioned in previous notes, but there is always a "passive" feeling that you must enter an address in the browser to access the corresponding url. We hope to click a button or link to go to another page. We finall

Node. js checks for updates using the command line tool, and node. js command line With the popularity of Node. js, it becomes easier to develop command line tools using Node.

JS traverses child node search elements and js node search Elements Function nextChildNode (node, clazz, tagName) {var count = node. childElementCount; for (var I = 0; I JS search fo

This article mainly introduces Node. examples of simple web page capturing functions implemented by js. This article uses libraries such as PhantomJS and node-phantomjs to implement these functions. For more information, see the following: web page capturing is a well-known technology, however, there are still a lot of complexities. Simple Web crawlers are still

Node. js solves the problem of obtaining the actual file type of images. The node. js file type A requirement: Assume that there is an image file with the actual type of jpg, and someone is lazy to copy a jpg file directly and save it as a png file with the same name, in this way, as3 will not encounter problems when r

Summary of axios usage in node. js, node. jsaxios Axios is an HTTP Library Based on Promise and can be used in browsers and node. js. axios is becoming more and more popular because of its great recommendation. I have encountered

Node. JS event-driven mechanism and node. js event mechanism 1. Event driverBind events and event handlers eventEmitter.on('eventName', eventHandler); We can trigger events through programs. // Trigger event eventEmitter. emit ('eventname '); 2. Instance Var EventEmitter = require ('events '). eventEmittervar a = new

This article mainly introduces. A simple method for reading and writing Redis databases in js applications. Redis is a memory-based high-speed Database. if you need it, please ensure that Redis and Node are installed before you start this article. js and Node. redis extension of js