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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11327

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 17632

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 11338

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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php - Why does laravel only insert one piece of data each time?

After DB::beginTransaction(); is turned on, only the first piece of data can be inserted each time, and the rest will be rolled back. The code is as follows: {Code...} If you close the transaction, you can insert multiple pieces of data {Code...} Please help me solve it, I am a newbie.

2017-06-19 09:07:10

Use self-executing functions to simulate a block-level scope (for example, after the for loop ends, subsequent code can no longer access the loop variables)

Question: Use a self-executing function to simulate a block-level scope (for example, after the for loop ends, the subsequent code can no longer access the loop variable). When I answered this question, I was also very dissatisfied with my answer. Is there any teacher or classmate who can give a set of reference answers?

2019-02-14 09:20:20

javascript - In the for traversal loop, how to make the result alert after else pop up only once?

In a for loop, when the previous two if conditions are not met, an alert prompt box will pop up. Due to the traversal query, the alert will pop up multiple times according to the number of arrays. Please tell me how to truncate this, so that it can only be judged. Pop up once? {Code...} Currently, writing this way will be based on json data...

2017-05-19 10:40:28

Functional issues with table tr:first-child td

I use CSS and tables to place the fraction line between the numerator and denominator. For complex fractions, it doesn't work properly on Ant browser. Below is sample code used in the tryit editor showing the issue. There is an unwanted border below the letter C. But something like the coded letter F will do. I tried 4 browsers and all had the same problem. There is a workaround to add style="border:none" to the question<td> (adding a class doesn't work), but why do I need to do this? postscript.

2024-03-30 13:24:05

Design a database table structure that meets the following business requirements?

I was stumped by the last question in today's interview: (original picture) Design a database table structure that meets the following business needs: 1. A certain merchant holds a lottery for playing games for a period of time. Only users who play the game with 50 points or more can win the lottery. Each user can participate in multiple events. 2. After the event, a list of lottery records needs to be compiled, including the following: 3. If user A draws 10 times and wins 2 times, the list will display 2 winning records of user A; if user B draws 8 times and does not win, Then only the lottery record with the highest score in the game played by user B will be displayed. The lottery results of users A and B are finally on the list

2018-03-14 23:00:16

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jquery implements the nine-square grid carousel lottery_jquery

Course Introduction：jQuery nine-square grid big carousel lottery code web page special effects, click the lottery button to start a random lottery to select prizes, you can set the starting position, number of prizes, number of rotations, and winning position parameters

2016-05-16 comment 0 1425

Play with H5PHP: Create an innovative big wheel lottery experience

Course Introduction：Title: Play with H5PHP: Create an innovative big wheel lottery experience In the current digital era, the continuous development and innovation of Internet technology have made lottery activities more convenient, interesting and attractive. Among them, the use of H5 technology combined with PHP programming to create large carousel lottery activities is adopted by more and more websites and applications. This article will introduce how to use H5 and PHP languages to implement an innovative big wheel lottery experience, and provide specific code examples. 1. Preparation Before starting, we need to prepare the following work: a Web server

2024-03-04 comment 0 753

PHP lottery algorithm program code sharing, lottery algorithm program code_PHP tutorial

Course Introduction：PHP lottery algorithm program code sharing, lottery algorithm program code. PHP lottery algorithm program code sharing, lottery algorithm program code The requirements that the lottery algorithm needs to meet are as follows: 1. It can control the probability of winning 2. It has randomness 3. It is best to control the number of prizes

2016-07-12 comment 0 1017

jQuery implements carousel lottery with pop-up window and number of times (code)

Course Introduction：What this article brings to you is about the jQuery implementation of the carousel lottery (code) with pop-up windows and times. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

2019-03-29 comment 0 2260

PHP jQuery flip lottery function implementation, jquery_PHP tutorial

Course Introduction：PHP jQuery flip lottery function is implemented, jquery can be used. PHP jQuery flip lottery function implementation, jquery 鎶鎶玶 implementation process of flip lottery: the front-end page provides 6 squares, using the numbers 1-6 to represent 6 different squares in sequence, when the lottery winner clicks 6

2016-07-12 comment 0 1001

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