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In this article, we will learn to delete a row from a table using jQuery. jQuery, a fast and lightweight JavaScript library, Deleting a row from a table dynamically is a common requirement in web development, especially when working with forms or data tables. Deleting a Row Using jQuery The approach involves attaching a click event listener to a delete button (or any element) within the row. When the button is clicked, the corresponding row is removed from the table. Following are the steps for jQuery Script for deleting a row from a table using jQuery− ... Read More
A file is a collection of data stored in secondary memory. Files are used to store information that programs can determine. A file represents a sequence of bytes, Whether it is a text file or a binary file. It is a collection of records or is a location on the hard disk where data is stored permanently. Operations on Files The operations on files in the C programming language are as follows − Naming the file Opening the file Reading from the file Writing ... Read More
Strikethrough Text Strikethrough text means text with a line through it. The tag was used in HTML4 to create a strikethrough text, but it is not supported in HTML5. Instead, the tag is used in HTML5 to define deleted text. Syntax Following is the usage of strikethrough tag in HTML − text…. Example: Displaying Strikethrough Text The following example demonstrates the use of the tag to display strikethrough text. This HTML code creates a webpage with the heading "TutorialsPoint" and a paragraph stating "It is an Edutech Company handles all Technical Non-Technical Subjects, " with ... Read More
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 More
Events perform tasks based on a predefined schedule, such as cleaning data once a day or doing backups, while Triggers are activated automatically when some actions are executed, like an INSERT, UPDATE, or DELETE. Despite their differences, events, and triggers can be used together to manage scheduled and reactive automation tasks. This article will show you the relationship and illustrate how they can enhance database management when combined effectively. Relationship Between MySQL Events and Triggers By making use of the strengths of events and triggers, we can design a ideal workflow that can efficiently handle real-time responses and scheduled ... Read More
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 More
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 More
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 More
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 More
To create a fixed footer with CSS, we will use CSS position property. A fixed footer means that the footer will remain fixed at the bottom irrespective of the page scrolling. We will be discussing two different approaches to achieve this. In this article, we are having some written content in a box and a footer. Our task is to create a fixed footer with CSS. Approaches to Create a Fixed Footer Here is a list of approaches to create a fixed footer with CSS which we will be discussing in this article with stepwise explanation and complete example codes. ... Read More