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Self-study IT network Linux load balancing video tutorial

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Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

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Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Band of Brothers front-end example display video tutorial

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Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

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html5 - How does FileReader read multiple files at once?

{Code...} As above, for an input that supports multiple image uploads, how to use filereader to read the dataurl of each image locally? How to write this upload?

2017-06-07 09:24:35

javascript - Using JS Qiniu to upload images will cause a file exists error (file exists)

When uploading images using JS Qiniu, a file exists error appears. However, it is obviously the first upload, and I have changed the key value. If I change the local file name, the error will not be reported. I can also use the official demo. An error will be reported http://jssdk.demo.qiniu.io/# {code...}

2017-06-26 10:53:56

Regarding image uploading, renaming and compression issues

The second time I used an image with the same file name, when I uploaded it, it was prompted that the file already existed, the path could not be saved in the database, and the file name could not be saved in the database, resulting in no display. , please tell me where to add code to solve this problem? The second question, where to add code to compress image file size<?phpif (count($_FILES)) { $retFiles = uploadFile("file"); if ($ret

2019-12-15 19:39:27

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 work. Below is the code snippet of the server database initialization connector in the application fromfastapiimportFastAPIimportmysql.connectorapp

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 ContactName. I think this might be a nested query. Nested queries run fine in SQLServer, but don't know how to implement it in MySQL. Limit query: Select*fromcustomerslimit

2023-09-05 14:46:42

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Detailed introduction of HTML5+CSS3 to realize drag-and-drop upload of images without plug-in (supports preview and batch)

Course Introduction：This article mainly introduces HTML5+CSS3 to implement drag-and-drop uploading of images without plug-ins (supporting preview and batch). Now html5 provides API and powerful APIs such as File, FileReader, XMLHttpRequest, etc., which makes it possible for us to achieve drag-and-drop uploading. Those who are interested can find out.

2017-03-15 comment 0 1667

JS code implementation for browser image selection, preview, rotation, and batch upload_javascript skills

Course Introduction：This article mainly introduces the JS code implementation of browser image selection, preview, rotation, and batch upload. Friends in need can refer to it.

2016-05-16 comment 0 1273

jQuery plug-in jcrop Fileapi perfectly realizes image upload, crop and preview code sharing_jquery

Course Introduction：This article mainly introduces the jQuery plug-in jcrop Fileapi to perfectly implement the code of image upload, cropping and preview. It is very simple and practical, and the effect is great. Friends in need can refer to it.

2016-05-16 comment 0 1743

PHP supports multiple formats for image upload, including jpg, png, and gif.

Course Introduction：: PHP supports multiple formats of image upload, supports jpg, png, gif: here supports uploading 2 images at a time. After uploading, the original image and the lower quality image are generated. The original image is used to save high quality images and poor quality images. Used for web page display. PHP Code Copy code The code is as follows:<?php include_once("db.php"); include_once("dbinfo.php"); $connector = new nmdb($host, $username, $password); $connector -&g

2016-07-29 comment 0 1248

How to upload image files to Empire CMS

Course Introduction：Image files can be uploaded through the file selector or drag-and-drop: File selector: Log in to the backend, click the "Picture" button in the text editor, and select the image to upload; Drag-and-drop: Drag the image into the text editor, supporting HTML5 file dragging The browser you are using can upload images directly.

2024-04-17 comment 0 502

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