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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11449

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

Course Advanced 17735

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

Course Advanced 11438

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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javascript - How to get files by dragging them to the browser?

If you click to upload on the page, you can click to get the files[0] in the input file; now the need is to drag the image directly from the desktop to the browser. How to get the first file in files[0]?

2017-06-12 09:25:02

angular.js - When angular-ueditor is in use, pictures are inserted and the angularmodel is not updated after the loading is completed;

When using Baidu Editor, the initial image inserted is the loading image. The uploaded image will be displayed after the loading is successful. When the image is inserted without any modification, the model in the controller is like this {code...} even if the image has been uploaded. Success, it has been displayed in the editor, but there is still nothing in the model...

2017-05-15 17:11:01

PHP background cannot get variables

Hello teachers, when I uploaded the picture, I made a user ID to pass the value, $uid = $_SESSION['userid'];echo $uid; This is no problem and the variable can be output normally. If I put this variable into the judgment, the value cannot be obtained. if(!empty($_FILES['avatar_file']['tmp_name'])){$uid

2020-02-17 00:56:40

javascript - In html, images, JS, and CSS obtain resources on the server through the src or url of the tag. Does the server need to write a corresponding response for each resource?

Recently, Xiaobai is learning nodeJS. When I was doing network programming, I thought that the browser first sends an HTTP request to a page through the input address (the server responds to the request and returns an HTML file), and then the pictures, JS, and CSS in the HTML are passed through tags. The src or href gets the resources on the server (also the browser...

2017-06-17 09:16:59

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

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How to make a drag-and-drop image upload preview component in H5

Course Introduction：This time I will show you how to make a drag-and-drop image upload preview component in H5. What are the precautions for making a drag-and-drop image upload preview component in H5? Here is a practical case, let’s take a look.

2018-03-12 comment 0 2262

vue-simplemde makes image dragging and pasting

Course Introduction：This time I will bring you how to drag and paste images with vue-simplemde. What are the precautions for dragging and pasting images with vue-simplemde? Here is a practical case, let’s take a look.

2018-06-08 comment 0 2257

Detailed introduction to drag and drop to upload images

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. Uploading is basically something that often occurs in projects. It is generally used: 1. form submission 2. flash3, HTML5 form submission will refresh the page, and it is difficult to upload asynchronously; flash may be used more because it can...

2017-06-12 comment 0 2682

Drag event editor implements drag and drop upload image effect

Course Introduction：This time I will bring you the Drag event editor to realize the effect of dragging and uploading pictures. What are the precautions for using the Drag event editor to realize the effect of dragging and uploading pictures? The following is a practical case, let's take a look.

2018-03-27 comment 0 2419

How to use Vue to implement drag-and-drop uploading of images

Course Introduction：How to use Vue to implement drag-and-drop image uploading Introduction: In today's Internet era, the image upload function has become one of the necessary functions for many websites and applications. With the continuous development of technology, user experience has become an area that developers need to focus on. This article will introduce how to use Vue to implement a simple drag-and-drop function to upload images, and provide specific code examples. 1. Requirements analysis Before starting to write code, we need to clarify our requirements: users can drag local image files to a specific area for upload. Users can

2023-11-07 comment 0 1599

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