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java - What is a more elegant way to implement paging loading in business?

As part of the project responsible for the school's library for the next semester, I now encountered a business design difficulty. For example, on the homepage, I plan to use ajax to load all the information when students query related information. I am not used to many websites such as Zhihu that d...

阿神 2017-06-06 09:51:51

Summary of PHP basics

To provide new PHP friends with several documents on the basic summary of PHP, download address: https://pan.baidu.com/s/1RN57Usa6WDc42qhR5_nNbA Password: txct Screenshot display:

TAO 2018-06-14 15:24:14

Download image button from third party server

In any browser, if you see an image, you can right-click it and click "Save As" to download it. I'm trying to make a button that downloads an image. The download button should download the above image, barcode. I'm using react, not sure if this is relevant to the answer. I read that you ca...

P粉198670603 2024-02-21 14:47:20

html5 - Please explain h5 video event monitoring in detail

As shown below, when the same video is loaded repeatedly, the monitored events will not take effect. The video is valid when it is loaded for the first time, but because the 1 and 2 videos are the same, the video will not be reloaded when the dialog box is clicked for the second time to play the vid...

PHPz 2017-05-24 11:36:26

Make React props optional and required in TypeScript based on other props

I have a React button container component that returns a regular button, an icon button, or an icon-only button based on the type provided by the prop used by the user. The following are the related type definitions of ButtonContainer components and Props: typeButtonWrapperProp={label?:string;icon?:...

P粉738046172 2023-09-17 13:42:00

Uncaught TypeError: tags.join is not a function.

I have a page with multiple tags stored in an array. I want to edit the page, and when trying to load an array of tags into TagsInput, I get the following error message: Uncaught TypeError: tags.join is not a function. Here is the code snippet related to this error: import { TagsInput } from &quo...

P粉729436537 2023-07-28 13:59:53

Button with centered text and icon

I'm developing a button component with an icon and text. The icon is placed to the left of the button and the text is aligned in the middle of the button. If the text cannot fit into the button, it should not wrap but can be truncated. The key condition for truncating text is that the text should be...

P粉033429162 2023-08-15 11:01:09

python - Saw a small project waifu2x based on convolutional neural network to improve image resolution on github? ?

I am new to machine learning. I would like to ask, after understanding the algorithm and related knowledge of this small project, how to write a small software like the one below and apply it in practice? ? This is the link to github: https://github.com/nagadomi/w... This is an online website for im...

学习ing 2017-06-23 09:14:51

How to do proper pagination in Vue.js 2

I have a problem creating pagination using vue. My task is to make sure that when you click on the button's number, a new task in the jsonplaceholder is loaded. I have successfully loaded the first and second page. I think this is directly related to my this.fetchTodos() operation. I'm just learning...

P粉690200856 2024-03-27 23:17:56

Why can't text in HTML programs be displayed horizontally and centered?

I'm currently trying to code my own Snake game and would like the title and actual game image to be in the center of the website. After I tried to insert the button to restart the game, everything broke down. Even if I try to undo all the changes, I can't seem to get the text to center. Additionally...

P粉974462439 2023-08-15 12:00:42

Why does every time I save my Vite React project, a new canvas element is added to the page body instead of replacing the existing canvas element?

I'm trying to start learning ThreeJs (I'm also new to Javascript web development). After watching some tutorials, I started with Vite and React, then started with a basic rotating cube. This part works. But from what I've read about vite, saving the file I'm working on should be enough to reload it ...

P粉186904731 2024-03-30 09:57:49

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

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

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

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

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

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

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