Home Database Mysql Tutorial How to develop a simple task manager using MySQL and JavaScript

How to develop a simple task manager using MySQL and JavaScript

Sep 20, 2023 am 10:03 AM
mysql javascript task manager

How to develop a simple task manager using MySQL and JavaScript

How to develop a simple task manager using MySQL and JavaScript

Overview:
Task manager is a common application that can help us Organize and track completion of daily tasks. In this article, we will learn how to develop a simple task manager using MySQL and JavaScript. The manager will have the ability to add, edit, and delete tasks, as well as display and search functions for task lists. We will use MySQL as the database to store task information, and JavaScript to implement the front-end user interface and interact with the database.

Preparation:

  • Install the MySQL database.
  • Create a database (such as task_manager), and create a task table (such as tasks), which will store task information, such as task name, deadline, priority, etc.

Development Task Manager:

  1. Establishing a database connection
    In JavaScript, we need to use the MySQL connection library to establish a connection with the database. The sample code is as follows:
const mysql = require('mysql');
const connection = mysql.createConnection({
  host: 'localhost',
  user: 'root',
  password: 'password',
  database: 'task_manager'
});

connection.connect((err) => {
  if (err) throw err;
  console.log('Connected to MySQL database');
});
Copy after login
  1. Add task
    We can add a task in the task manager. Obtain task-related information through front-end forms and insert it into the task table. The sample code is as follows:
function addTask(taskName, deadline, priority) {
  const task = { name: taskName, deadline: deadline, priority: priority };
  connection.query('INSERT INTO tasks SET ?', task, (err, res) => {
    if (err) throw err;
    console.log('Task added successfully');
  });
}
Copy after login
  1. Edit Task
    We can edit existing tasks. Get the updated task information through the front-end form and update it to the task table. The sample code is as follows:
function editTask(taskId, updatedTask) {
  connection.query('UPDATE tasks SET ? WHERE id = ?', [updatedTask, taskId], (err, res) => {
    if (err) throw err;
    console.log('Task updated successfully');
  });
}
Copy after login
  1. Delete task
    We can delete tasks from the task manager. The sample code is as follows:
function deleteTask(taskId) {
  connection.query('DELETE FROM tasks WHERE id = ?', taskId, (err, res) => {
    if (err) throw err;
    console.log('Task deleted successfully');
  });
}
Copy after login
  1. Display task list
    We can get the task list from the database and display it on the front end. The sample code is as follows:
function displayTasks() {
  connection.query('SELECT * FROM tasks', (err, rows) => {
    if (err) throw err;
    console.log('Tasks:', rows);
  });
}
Copy after login
  1. Search tasks
    We can search the task list based on keywords. The sample code is as follows:
function searchTasks(keyword) {
  connection.query('SELECT * FROM tasks WHERE name LIKE ?', "%" + keyword + "%", (err, rows) => {
    if (err) throw err;
    console.log('Search results:', rows);
  });
}
Copy after login

Summary:
By using MySQL and JavaScript to develop the task manager, we can add, edit, and delete tasks, and can display the task list and search on the front-end interface Task-specific functionality. The above is a simple code example. You can modify and extend the code according to your own needs to achieve more functions and a better user experience. I hope this article can help you get started quickly and understand how to develop a task manager using MySQL and JavaScript.

The above is the detailed content of How to develop a simple task manager using MySQL and JavaScript. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

MySQL's Role: Databases in Web Applications MySQL's Role: Databases in Web Applications Apr 17, 2025 am 12:23 AM

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

How to start mysql by docker How to start mysql by docker Apr 15, 2025 pm 12:09 PM

The process of starting MySQL in Docker consists of the following steps: Pull the MySQL image to create and start the container, set the root user password, and map the port verification connection Create the database and the user grants all permissions to the database

Laravel Introduction Example Laravel Introduction Example Apr 18, 2025 pm 12:45 PM

Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.

Solve database connection problem: a practical case of using minii/db library Solve database connection problem: a practical case of using minii/db library Apr 18, 2025 am 07:09 AM

I encountered a tricky problem when developing a small application: the need to quickly integrate a lightweight database operation library. After trying multiple libraries, I found that they either have too much functionality or are not very compatible. Eventually, I found minii/db, a simplified version based on Yii2 that solved my problem perfectly.

How to install mysql in centos7 How to install mysql in centos7 Apr 14, 2025 pm 08:30 PM

The key to installing MySQL elegantly is to add the official MySQL repository. The specific steps are as follows: Download the MySQL official GPG key to prevent phishing attacks. Add MySQL repository file: rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm Update yum repository cache: yum update installation MySQL: yum install mysql-server startup MySQL service: systemctl start mysqld set up booting

Centos install mysql Centos install mysql Apr 14, 2025 pm 08:09 PM

Installing MySQL on CentOS involves the following steps: Adding the appropriate MySQL yum source. Execute the yum install mysql-server command to install the MySQL server. Use the mysql_secure_installation command to make security settings, such as setting the root user password. Customize the MySQL configuration file as needed. Tune MySQL parameters and optimize databases for performance.

Laravel framework installation method Laravel framework installation method Apr 18, 2025 pm 12:54 PM

Article summary: This article provides detailed step-by-step instructions to guide readers on how to easily install the Laravel framework. Laravel is a powerful PHP framework that speeds up the development process of web applications. This tutorial covers the installation process from system requirements to configuring databases and setting up routing. By following these steps, readers can quickly and efficiently lay a solid foundation for their Laravel project.

MySQL vs. Other Programming Languages: A Comparison MySQL vs. Other Programming Languages: A Comparison Apr 19, 2025 am 12:22 AM

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages ​​such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages ​​have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

See all articles