1. I used node s http.get to request a link and got a string of data in JSON format. 2. Data (only pictures can be played. Put the text, the display is not normal, put part of it) 3. I printed it as string, and I used eval (data) or JSON.parse...
more cea.js and u.js makes mistakes sometimes there is no ...
the rookie wants to build a server with node express, but the cross-domain problem has not been solved. When requesting JSON data, I was at a loss because the pre-request could not pass the permission control and could not complete the cross-domain proc...
Collection a has the following documents: { "_id" : ObjectId("5acd77c763c9b117b48b2e92"), "Symbol" : "item01", "min5" : [ { "Symbol" : "item01", ...
I would like to ask you, recently, I am learning that requirejs, knows that r.js is used to package requirejs modules. But now I want to package the requirejs module with r.js in conjunction with gulp. read a lot of tutorials, and many of the tutorial...
are jade and jsp the same thing? what are the advantages of templates such as jade over vue,react? What kind of scenarios are suitable for? is jade server rendering? ...
use the tesseract.js picture recognition library to identify the Unhandled error event error of the Photo Times, as shown in the following figure has determined that there is nothing wrong with the code, because the official example of reports...
seniors, I am learning how to use Node to build a website. I encounter a very confused problem that cannot be solved. I hope to get some advice from my seniors there are several a tag connections below. I want to click on the connection to jump to the...
due to business needs, 1 needs to scale the images of different sizes to a uniform size, 2 and then put them on canvas, 3 write the required text, 4 synthesize the specified QR code, and provide users to save or forward. you need the following fun...
request the backend to submit parameters to return a url similar to online silver recharge. It is risky to contact the merchant after entering the operation prompt. What is the situation of contacting the merchant? Is it necessary to submit form forms in...
I use node to simulate a background, and then the foreground gets the data, and get can get it. What is the reason why post has always been pending,? node Code: axios: : get: ...
After the copy task is completed, the files in the proDir will be manipulated later. However, subsequent operations often fail because the copy of the file has not been completed. how should I monitor the status of the completion of the dest copy? gul...
const http = require( http ); const urllib = require( urllib ); const keepaliveAgent = new http.Agent({ keepAlive: true, }); const server = http.createServer((req, res) => { res.end( Hello World, + req.connection.remotePort); }); server.o...
const MongoClient = require( mongodb ).MongoClient; const url = mongodb: localhost:27017 ; Database Name const dbName = youyue ; var obj = {}; module.exports = async(ctx,next)=>{ const num = ctx.query.num, page = ctx.query.pag...
what happened when I first used the nodejs API,watch method to call back twice? the test.js code is as follows: const fs = require( fs ); fs.watch( . a.txt , function(eventType,filename){ console.log(eventType,filename); }); A few simple lin...
I follow the demo code provided by i18next const i18next = require( i18next ); const i18m = require( koa-i18next-middleware ); add custom detector. i18m.LanguageDetector.addDetector({ name: mySessionDetector , lookup(ctx, options)...
want to click the "component " button, and then the component .html page overrides the big red box, showing how the component .html page is implemented. Ask for advice ...
for (let iBoth I < 1000000 th IPP) { console.log (i) } this way of writing must print out 1 99999 . if I want him to suddenly stop at a certain value and change how to write (can t add if to it) ...
suppose there is a table Group User, and the owner of Group is associated with User Group _ id name owner: {type: Schema.ObjectId, ref: User } User _ id name Q: search to find the Group list, fuzzy search according to Group name and User n...
mongoose What is the reason for ? ...
The code is as follows: why does the whole component (including subcomponents) re-mount when currentItem.isLeaf changes return React.Children.map([0,1,2,3,4,5,6], (Child, index) => { const ChildNode = currentItem.isLeaf === 1 ? ACo...
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I have a table service_message that contains about 600000 pieces of data, which records when different devices receive messages: SHOW CREATE TABLE service_message CREATE TABLE `service_message` ( `id` INT(11) NOT NULL AUTO_INCREMENT, `device_id` I...
after calling this interface to the place where the phone calls, how to return to Mini Program? You can t go back to Android s back button. Ask for advice ...
python version is 3.5, MySQL version is 5.7.21, create database: py4e create table: PymySqlTest, install pymysql pip3 install pymysql prompt Requirement already satisfied: pymysql in Library Frameworks Python.framework Versions 3.7 lib python3.7...