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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.

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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.

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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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I want to get the duration of the video when the user uploads the video. I don't want to put the video tag into the html. I want to get video duration code in php and javascript or jquery. Thanks

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2017-05-16 13:19:30

javascript - Issues regarding login interception of separate pages before and after

The project is separated from front to back. The back end only provides interfaces to the front end, and each interface carries a token. Now there are some pages that require login to enter. How can the front end intercept them. For example: Jump from page A to page B through the A tag (page B needs to be logged in to enter). What I do now is to go to page B, send an ajax request,...

2017-06-24 09:44:13

How to select the array data you want when the filter conditions are uncertain

The front-end randomly submits 4 types of data a b c d and needs to use == to compare b c d and use the greater than sign to compare the conditions submitted by the front-end each time. It is not sure whether it is array(a,b,c,d) or array(a ,b), or array(a); Several conditions may require array comparison in the background. This array is found from the database, array(array(a=>2,b=>

2023-10-02 17:29:09

Can I use @ViewChild to set focus on a specific text area?

I have a frontend angular app and I want to set focus to a specific textarea, have the cursor flash and be ready for the user to type in the textarea when it loads. After doing some googling I thought @ViewChild might be the right choice. But so far I've been able to get it working. This is my entire standalone ts file: import{Component,ElementRef,ViewChild}from'@angular/core';@Component({selector:'my

2023-09-08 16:58:05

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Analysis of the difference between JavaScript framework Angular and React

Course Introduction：This article provides readers with a detailed analysis of the differences between the two JavaScript frameworks Angular and React through concepts and usage ideas. I hope it can help everyone.

2018-01-16 comment 0 1676

Is front-end JavaScript or Qt more difficult?

Course Introduction：Is front-end JavaScript or Qt more difficult? In modern software development, the development of both front-end and back-end has become very important. In front-end development, JavaScript and Qt are two very commonly used front-end development languages. Although their programming paradigms and purposes are very different, people often debate which one is more difficult to learn and master. Since JavaScript was created by Brendan Eich, it has become the dominant language in the field of front-end development. The main use of JavaScript is to add dynamic interactions to web pages.

2023-05-26 comment 0 1161

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Course Introduction：Today's JavaScript column introduces front-end security.

2020-11-10 comment 0 1833

Discuss the advantages and disadvantages of front-end and PHP, how to choose?

Course Introduction：In today's IT industry, both front-end and back-end development are very important areas. Between the two, the comparison between front-end and back-end and PHP language is often discussed and debated. In this article, we will discuss the advantages and disadvantages of front-end and PHP, as well as their application in actual development, hoping to provide you with some inspiration.

2023-03-22 comment 0 1570

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