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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to add a new row in a table using jQuery?
In this article, we will learn to add a new row to a table using jQuery. jQuery, a fast and lightweight JavaScript library, in web development, dynamically adding or removing rows from a table is a common requirement, especially when dealing with forms or data entry interfaces. Use CasesThis functionality is particularly useful in scenarios such as − Creating dynamic forms where users can add multiple entries (e.g., adding multiple email addresses, phone numbers, or product details). Building data entry interfaces where the number of rows is not fixed. ...
Read MoreWhat MySQL returns if I insert invalid value into ENUM?
If strict SQL mode is disabled and we insert an invalid value (which is not in the list of permitted enumeration values) into ENUM, MySQL will insert an empty string instead of throwing an error. If strict SQL mode is enabled, MySQL throws an error when inserting invalid value. Invalid values without strict SQL mode Strict SQL mode is disabled by default. When it is disabled, if we enter an invalid value that is not in the ENUM list, it returns an empty string. Let us understand this by using the example below. Example In the below example we have ...
Read MoreUse a trigger to stop an insert or update in MySQL?
The MySQL trigger can be used to automatically terminate an INSERT or UPDATE operation if specific conditions are not met. This is achieved by adding logic to the trigger to detect incorrect data or violations of a rule. If the condition is satisfied, the SIGNAL statement is used to show a customized error message and terminate the procedure. Thus, it ensures that the database has valid, clean, and consistent data. For instance, if a value is being updated or inserted in the column beyond the allowed range, the trigger can stop the action and give a customized error message. ...
Read MoreWhat does DELIMITER // do in a Trigger in MySQL?
DELIMITER in MySQL Triggers In MySQL, a DELIMITER command changes the delimiter from its default value of semicolon (;) to another string like //. This is really useful when creating stored procedures or triggers that contain multiple SQL statements, which may also include semicolons. Why do we Change the Delimiter in MySQL When you declare a trigger, you have to write a few SQL statements that may also involve control flow statements like IF conditions, which include semicolons. Unless you change the delimiter, MySQL will consider the first semicolon to be the end of the declaration of the ...
Read MoreWhy should we not store a number into a MySQL ENUM column?
MySQL stores ENUM values internally as integer keys (index numbers) to reference ENUM members. The main reason for not storing the integer values in the ENUM column is that it is very obvious that MySQL ends up referencing the index instead of the value and vice-versa. These indexes begin at 1, not 0, and map to the order of the values defined during table creation. If a number is inserted directly into an ENUM column, MySQL interprets it as the corresponding index, leading to unexpected behavior. Example Let us create a table named Enmtest ...
Read MoreDifference between Laravel Route::resource vs Route::controller
Introduction When building a Laravel application, managing routes efficiently is crucial. Laravel provides various methods to define routes, and two commonly used approaches for handling resourceful controllers are Route::resource and Route::controller. While both help manage routes in a structured way, they have key differences in how they define and handle requests.In this article, we will explore the differences between Route::resource and Route::controller with an easy-to-understand table and examples. Key Differences Feature ...
Read MoreWhat is Deepseek? Explain Training Algorithm
Have you heard about the "sputnik" moment in AI? 20 January 2025. This date. Yes, this date is what some people in the AI industry believe as the sputnik moment. Sputnik, as you might know, was the first artificial earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. This launch was significant because it began what we now know as the space race between 2 super powers of the time: the USA and the Soviet Union. Similarly, on 20 Jan. 2025, a Chinese artificial ...
Read MoreTop 10 Best WordPress Shopping Cart Plugins
Any e-commerce website must include shopping cart plugins in order to facilitate effortless purchases and improve customer experience. A number of plugins in 2025 are notable for their features, usability, and integration potential. The top ten WordPress shopping cart plugins are listed in this article.1. WordPress Simple Paypal Shopping CartThe WordPress Simple PayPal Shopping Cart is the best option for adding a stable and easy-to-use shopping cart feature to WordPress. It makes it possible to sell goods and services straight from a WordPress website. Using shortcodes, the plugin enables the dynamic development of products.Key featuresThe output produced adjusts without any problems.This ...
Read MoreDifference Between Zombie and Logic Bomb in Cyber Security
Malware is defined as any malicious program designed to harm or take advantage of any network, service, or device. Malicious software refers to any software intended to damage users, networks, or machines. It includes things like zombies and logic bombs. Computer viruses, zombies, logic bombs, worms, Trojan horses, ransomware, spyware, and other harmful applications are all considered malware.What are Zombies?Zombies are infected laptop computers that are under the control of hackers. They could be used for malicious activities including stealing information, sending unsolicited mail, or even breaking into personal computer systems. Zombies are a serious threat to individuals, businesses, and society as ...
Read MoreCreate a media resources for media elements, defined inside video or audio elements in HTML5
HTML5 supports five media elements, that are useful for creating media resources. The different media tags are , , , and . These tags are used to change the development, let us discuss each element in detail with an example − The tag To play videos on your web page, you can use the HTML element. This element provides a standard way to embed videos in a webpage. The simple code to embed a video is as follows − Your browser does not support the ...
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