javascript - Ask a question about creating an instant messaging function on a web page? ?

Question: I want to make a function similar to the QQ chat interface on the homepage of the website. It doesn’t have to be complicated. It just needs to display the user’s avatar and the content sent. There is no need to record the chat. Just display the latest 20 records in real time? Personal thou...

typecho 2017-06-28 09:22:36 0  2  700

How can I use the current MUI state to sum and display columns?

I'm creating a MUIWeb application to track some personal data. I'm using MUIdatagridpro to display data and as we know it has some pretty extensive filters inside its datagrid component. I want to display the sum of the currently displayed filtered columns without having to requery the database to g...

P粉908138620 2024-02-26 17:18:02 0  1  445

How to write a resume form in thinkphp to display the completeness progress bar

1. In the recruitment website project, the personal resume page is divided into 7 small tables in total. Is there any method to achieve the completeness of the entire resume table? 2. How much value is manually entered in the template, and the page will display the progress. 3. What method can be us...

迷茫 2017-05-16 13:16:20 0  1  621

The creative journey of exploring particles.js begins

I'm using particles.js to deploy a simple personal website. Two questions: What is the difference between using particles.min.js and particles.js? There is no documentation on this, I've used both and there doesn't seem to be any difference. If I run entirely client side, can I use the particles.jso...

P粉786432579 2023-09-16 17:59:07 0  1  544

Is storing delimited lists in database columns really that bad?

Imagine a web form with a set of checkboxes (any or all of them can be selected). I chose to save them in a comma separated list of values ​​stored in a column in the database table. Now, I know the correct solution is to create a second table and normalize the database correctly. It's faster to imp...

P粉020556231 2023-08-27 19:52:49 0  2  490

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't wo...

P粉178132828 2023-09-05 11:18:47 0  1  815

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactNam...

P粉237125700 2023-09-05 14:46:42 0  1  719

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: ...

P粉212114661 2023-09-05 15:18:28 0  1  610

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

P粉076987386 2023-09-05 15:06:32 0  1  571

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in...

P粉369196603 2023-09-05 15:34:44 0  1  1000

How to get average of DATETIME column in MySQL while grouping by other columns

I'm creating and populating a MySQL table using the following query: SETtime_zone='+00:00';CREATETABLEtimestamp_n_datetime(idINT,timeDATETIME,avg_timeDATETIME);INSERTINTOtimestamp_n_datetime(id,time,avg_time)VALUES("1","2023-01-0310:

P粉460377540 2023-09-05 11:46:21 0  1  504

Multi-device (mobile phone) synchronization - React Native

I'm trying to create a Lightshow that will launch on all users' mobile devices at the same time (can have up to 2000-3000 users). All users will use the Internet (Wi-Fi or mobile data). In our FE we use Apollo for subscriptions and it works like a charm. But the problem is, user A can get subscribed...

P粉151466081 2023-09-05 11:58:38 0  1  697

Spades, Diamonds, Hearts, Clubs => styles do not change font color in Chrome for Android

In Google Chrome on Windows, the card suit symbols (spades, hearts, diamonds, clubs) are colored correctly using the "style" attribute. Unfortunately, the same page displayed in Google Chrome on Android does not display the colors I defined but uses the default black and red. (See the atta...

P粉896751037 2023-09-05 15:25:13 0  1  753

How to hide mui TextField label?

I'm developing a Nextjs app and I have a dashboard navigation bar built with mui that contains a notification that opens the notification box, which is built with regular HTML and CSS. dashboard-navbar.js: importNotificationBoxfrom"./notification-box/notification-box";//...exportconstDashb...

P粉239164234 2023-09-05 15:41:00 0  1  678

Custom Bootstrap 5 carousel on mobile (multiple items, but not in one row)

I'm having trouble trying to customize the carousel layout on mobile devices. I want it to show every item of the carousel on mobile instead of just one, but after trying with some CSS and JS, especially using displayfloat or max-witdh I'm just starting to think this isn't possible, Or I don't know ...

P粉763662390 2023-09-05 11:53:56 0  1  594

How to use Firebase Authentication with multiple login methods and role-based authentication?

I am creating a react.js application with nodejs as backend and I want to use these authentication methods to login using email/password, login using google and login using phone, now I want to keep the uniqueness of the user while signing the user's name for Any of these, I will also get other deta...

P粉574695215 2023-09-05 12:18:10 0  1  657