Form validation is a mature and useful library.

recently, we have systematically learned the knowledge related to development security. As the data entry of web system, the security of the system can not be ignored. Therefore, it is necessary to strictly check the data entry at the entrance in order to clean illegal data

as a direct entry form for data, there are mature and applicable front-end libraries to validate form data
in the current front-end separation framework, post API is also the direct entry of data. In order to ensure the coupling of the code, it should be the separation of business code and verification code. Is there any good solution to solve this problem in the express framework

Javascript express

Feb.28,2021

Previous: PHP MYSQL loops to output a single piece of data sequentially

Next: Exception occurred in Python multi-inheritance band parameters

413 (Payload Too Large)
413 (Payload Too Large) how to set app.use (bodyParser ()); app.use (bodyParser ({limit: 50mb })); app.use (bodyParser.urlencoded ({limit: 50mb })); ) invalid Thank you ...

Node.js javascript express

Mar.14,2021
Nodejs download excel, how to request and save as a xlsx file at the front end?
< H2 > for example, my node side says: < H2 > exceljs excel : node response node excel reactaform node connect-history-api-fallback < H1 > ask for advice, < H1 > < H1 > Thank you, thank you < H1 > ...

Javascript express node.js

Mar.18,2021
How do you loop through an asynchronous method in nodejs?
perPageFiles = filenames.slice(articleIndex, articleIndex + perPage); perPageFiles.forEach(function(filename, index) { fs.readFile(fileDirectory + filename + .md , utf-8 , function(err, data) { if (err) throw err; perPageDatas[index].arti...

Asynchronous promise javascript express node.js

Mar.22,2021
After create-react-app installation, do I still need to install express?
after create-react-app is installed, I want to use Express. I see that express already exists under node_modulues, but I introduce an error . neither of the two quotations is correct import logo from . logo.svg ; import . App.css ; import $ from...

Javascript express react.js

Apr.15,2021
How to bind a domain name when a react program is released
Express + react write an application online, URL http: IP:port supplies id parameter. Now there is a domain name, such as abc.cn,. I want to bind this domain name to achieve abc.cn supplies 20005 access, but I don t know how to configure it. Package....

Javascript express react.js

Jun.14,2021
How to get the back-end request page API client from the front-end request
the back end of the call Mollie API client request payment page written in express is localhost:8000 enter URLlocalhost:8000 api?issuer=ideal_ABNANL2A to jump directly to the payment page using the selected bank. Front end is localhost:3000 package.j...

Node.js javascript express

Aug.27,2021
MongoDB query problem in express
I just started to learn express recently. In the practice of tapping mdn, I want to modify it a little bit. If I encounter a problem, I will first add the code: tagController.js: const Tag = require( .. models tag ); exports.find_all = async (req,...

Javascript express mongodb

Apr.19,2022
On the Joint Development of react and node
problem description react uses create-react-app to build the environment node intends to use the Express framework Q: want to know how to structure the project if you use node to develop the backend? Q: do you want to open two services if you run ...

React.js javascript express

Apr.20,2022
How does npm have all the dependencies of the project's package.json under the install subdirectory at one time?
< H2 > I believe that many people will have the same needs as me < H2 > the directory is as follows Project node_modules package.json subproject node_modules package.json I cd to the first-level directory of the project then npm insta...

Javascript express node.js npm

Jul.02,2022
Why does the front end request the picture in the node.js server, after getting the src path, the picture does not display properly, and the network does not display properly?
problem description the front end requests the picture in the node.js server. After getting the src path, the img image cannot be displayed properly, and the network cannot display normally. the environmental background of the problems and what m...

Node.js javascript express

Jul.14,2022