Node. js module mechanism learning notes, node. js learning notes
Javascript has never been used as a programming language since its birth. In the Web 1.0 era, this scripting language is mainly used for Form Verification and webpage special effects. It was not until the Web
This article mainly introduces node. use q. js implements api promise. promise is a standard that describes the returned results of asynchronous calls, including correct returned results and error handling, need a friend can refer to what is promise and promise solution
This article mainly introduces Node. in js, the event transmitter mode is used to implement event binding. This article also explains the basic knowledge of callback mode, transmitter mode, and event type. For more information, see Node, many objects launch events. For example, a TCP server will launch a "connect" even
to success pageRes. redirect ("userlist ");}});
}}Obviously, you still need to perform a lot of verification in the real project. For example, the user name and email cannot be duplicated, and the email address must comply with certain format rules. But now we don't care about this. As you can see, when the database insertion is complete, let the user jump back to the userlist page, where they should see the newly inserted data.
, which is obviously far from the real sleep.
What if we implement a real sleep?
Environment preparation
Development Environment
Some of my blogs have said that node. js + npm, python 2.7, visual studio/x-code.
Compilation tool
The compilation tool must use node-gyp. later v
Node. js is one of the most popular frameworks in JavaScript and is easy to create scalable Web applications. Node. js contains different types of frameworks, including MVC, full-stack, RESTAPI, and Generators. With these framewor
the difference between each group1, found that the problem: sharp-eyed's friends are not difficult to find, jquery this 4 groups of methods to add nodes, each group of 2 methods to achieve almost the same effect, then they exactly what is different? I'll take an example, and everybody knows.2, Example : We take the fourth group as an example, now I want to make some changes to the
{Code...} If you run css. ashx separately, the following message is displayed: css. ashx, js. ashx: Usage: css. ashx? HrefA, B, Cjs. ashx? Different files in the same directory of hrefA, B, and C are enclosed in square brackets. css. ashx? Href [AA1, A2] means connection ~ AA1.css and ~ A...
If you run css. ashx separately, the following message is displayed:
This article focuses on introducing node. blocking and non-blocking calls of js callback functions involve node. knowledge about js callback functions. If you are interested in this article, learn it together. First, node. as a javascript running platform,
I needed a problem when I was working on the project today. I wanted to find a string, but I forgot it. It was in that file, so I remembered node. js, finding this string without any pressure, shares with you the following requirements:
The entire directory is about 40 MB, and there are countless files. For a long time, I cannot tell which file the character str
This article mainly introduces Node in detail. js module encapsulation and usage. If you are interested, refer to Node. js also has some function encapsulation, similar to the C # class library, which is encapsulated into a module for ease of use. After installation, use req
This article mainly introduces node. the js entry-level instance helloworld describes node in detail. js simple output example helloworld implementation code and running method. If you need it, refer to the example in this article to describe node.
This article mainly introduces Node in detail. if you are interested in js data push, refer to the following scenario: backend update data is pushed to the client (Tomcat server is used in Java ).
There are many solutions for pushing data at the backend, such as polling, Comet, and WebSocket.
1. polling
This article mainly introduces. the Redis method is used in js applications, and the simplest data read/write operations are related. If you need it, please ensure that Redis and Node are installed before you start this article. js and Node. redis extension of
This article analyzes and explains node through several examples. the use of require in js is very detailed. Here we recommend that you provide a very clear description in the code comments. Here we will not talk nonsense about it. We will provide the Code directly:
The Code is as follows:
/* In
Node. js supports multi-user web Terminal Implementation and security solutions, and node. js supports multiple users
As a common feature of local IDE, terminal (command line) supports git operations and file operations of projects. For WebIDE, without a web pseudo-terminal, only the encapsulated command line interface
This article uses several examples to analyze how to use the require () function in node. js to load modules. It is very detailed. For more information, please refer to the detailed descriptions below and write them in comments. Here we will not be so embarrassed. Let's take a look at the details here. Please never comment it out as air.
The Code
This article mainly introduces how to easily create a node. js server (5): event processing program. This series of articles will create a complete node. js server step by step, if you need it, you can refer to the introduction of an event processor module to provide different feedback for different requests.
This mod
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