javascript - How to call the width and height of the read remote image

I want to call the width and height of this image outside the function. How should I write it? I've been stuck for three days and have no clue. {Code...} {Code...} This kind of pop-up width and height is possible, but how to call this width and height. Your few lines of code can save me a lot of tim...

怪我咯 2017-05-18 10:57:30 0  2  437

CSS drop cap image, text aligned in white space

I don't think this is an everyday dropcap situation. My capital "S" is an image like this: Note that the actual image extends all the way to the upper column. The top bar is part of the same image, containing the large S and the drawing to the left of the S. I colored the background blue s...

P粉415632319 2023-09-05 21:42:04 0  2  564

Share images via social media using PWA

In my NuxtPWA I have a function that converts HTML to Canvas using this package. The generated image is in hexadecimal format. Now I want to be able to share the image via: Whatsapp, Facebook, Email, Instagram, etc. I've found several packages, but none of them seem to support sharing just file URLs...

P粉300541798 2024-01-28 22:02:28 0  2  485

How many images can I set without overlapping when setting a background using CSS?

I learned about CSS background images today and I practiced on many background image based questions, but I have a doubt in my mind. The question is how many pictures can I have in the background without overlapping each other, please give me the answer. I tried to find the answer but I can't find t...

P粉818088880 2023-08-16 17:24:10 0  1  546

Sequentially rename files on upload based on existing files in directory

I'm using this (php) upload code I found online for an image upload form. I realize there are already a lot of questions/answers on the site about "renaming files" when uploading, and I've researched them quite a bit. So far...none of them seem to specifically address what I want to do. Ho...

P粉310931198 2023-09-10 13:14:12 0  1  703

Get the value of MySQL

Since yesterday I'm trying to get this value (see picture), I've tried using "mysqlreader, executescalar, etc." but I can't get the number of rows. What I want to do is this: if the result is 0, then do nothing; if equal to 1, then one image must be displayed; if greater than 1, another im...

P粉323374878 2024-04-06 14:45:26 0  1  535

The public welfare live broadcast "How to Learn to Program" will meet you at 20:00 tonight!

The theme of this public welfare live broadcast is how to learn programming, pointing out the direction for novices on the road to learning programming, and sharing everyone's learning experience together! Please participate in the live broadcast QQ group: 271168889. Newcomers can ask questions abou...

PHPz 2018-08-02 15:36:35 2  7  2462

Simplify video playback in emails: ensure instant playback, no download screen required

I'm not sure "which wall to lean the ladder against" here, or even the correct terminology for what I'm trying to do. I have been developing software for an agricultural research company for many years. We have an Android app that performs a number of functions, including uploading field p...

P粉242535777 2024-03-30 17:12:51 0  1  587

How to provide accessible text in HTML for screen reader users?

I have a website that has colored divs with numbers on them, for example a red block with the number 2 inside. Color is important for understanding. A blind user emailed me and asked if I could have a screen reader read "2red". I tried adding it as alt="2red" but he said it didn'...

P粉426780515 2023-08-22 21:26:22 0  2  517

MySQL issues when summarizing sales data from two separate tables

Thank you very much in advance for your support. I'm learning SQL and generating some data to play with, but I'm stuck on one simple thing. The table in the screenshot below shows part of my sales20 table, which shows the sales achieved by each employee in 2020 along with region and date information...

P粉391677921 2024-04-04 14:22:13 0  2  498

How to use CSS selectors to target div elements containing specific attributes or tags?

I'm working on a POS system that generates a website. Most of the code is proprietary so I can't edit much. I have an output list of categories with some images floated as categories. I want to hide the first 3 listed on the home page. I tried positioning the containing div using div:nth-child(1), w...

P粉493313067 2024-04-03 22:25:59 0  1  421

PHP sends 800,000 emails every day. Now it needs to use message queue. Which one is more suitable?

Requirements: 1.php sends 800,000 emails every day (almost 10 emails per second). Now it is necessary to use the message queue. Example scenario (as shown in the picture): Server A is used as the exit to deliver emails to the sending server 2. Just meet the needs, there is no need to use a heavyweig...

莫 2018-11-28 14:19:14 0  0  1175

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  822

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  724

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  615

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  577

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  1004

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  506

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  698