How to Create a CRUD App with jQuery?

introduction this guide will walk you through building a complete crud (create, read, update, delete) application using jquery we'll use back4app as our backend service to simplify data management in this tutorial, you'll explore how to configure a back4app project, design a flexible schema, and implement crud functionalities with jquery through rest api calls we begin by setting up a back4app project titled basic crud app jquery this project provides a scalable non relational data storage solution you’ll define your data model by creating classes and fields directly within back4app, either manually or with the help of back4app’s ai agent after that, you'll learn to manage your data using the back4app admin app—a user friendly, drag and drop interface finally, you'll connect your jquery powered front end to back4app via rest api calls, ensuring that secure access is maintained by the end of this tutorial, you'll have a production ready jquery application that can perform basic crud operations along with secure user authentication and data management key takeaways build a jquery based crud application using a robust low code backend understand how to design a scalable backend and integrate it with your jquery front end learn to use the intuitive back4app admin app for efficient data manipulation discover deployment strategies including containerization to smoothly launch your application prerequisites before diving in, make sure you have a back4app account and a new project set up need guidance? visit getting started with back4app https //www back4app com/docs/get started/new parse app a working web development environment use a code editor like vscode, sublime text, or similar, and ensure you have modern browsers for testing basic knowledge of jquery, javascript, and rest apis for a refresher, check out the jquery documentation https //api jquery com/ step 1 – project setup creating a new back4app project log into your back4app account click the “new app” button on your dashboard name your project basic crud app jquery and follow the on screen instructions to complete the setup create new project after creation, your project will appear on the dashboard, laying the foundation for your backend configuration step 2 – designing the data model defining your data structures for this crud application, you will create several classes (collections) in back4app below are the primary classes and their fields essential for crud operations 1\ items class this class stores information about each item field data type description id objectid auto generated unique identifier title string the name of the item description string a brief description of the item createdat date timestamp of when the item was added updatedat date timestamp of the last modification 2\ users class this class handles user credentials and authentication details field data type description id objectid auto generated unique identifier username string unique identifier for the user email string user’s email address passwordhash string encrypted password for secure login createdat date account creation timestamp updatedat date timestamp for the last account update you can manually add these classes and fields via the back4app dashboard create new class to add fields, select the data type, enter the field name, set a default value if necessary, and mark it as required if needed create column utilizing the back4app ai agent for schema generation the integrated back4app ai agent can automatically generate your schema based on a brief description this simplifies project initialization and ensures your model supports crud operations how to use the ai agent open the ai agent sign into your back4app dashboard and navigate to the ai agent section under project settings describe your schema provide detailed information about the classes and fields required review and confirm once the ai agent processes your input, it will suggest a schema review and approve it to finalize your configuration example prompt create these classes in my back4app project 1\) class items \ fields \ id objectid (auto generated) \ title string \ description string \ createdat date (auto generated) \ updatedat date (auto updated) 2\) class users \ fields \ id objectid (auto generated) \ username string (unique) \ email string (unique) \ passwordhash string \ createdat date (auto generated) \ updatedat date (auto updated) this ai assisted process not only saves time but also ensures a consistent and optimized data schema step 3 – activating the admin app & handling crud operations getting started with the admin app the back4app admin app offers a no code solution for efficient backend data management its intuitive drag and drop interface simplifies the process of performing crud operations such as adding, viewing, editing, and deleting records enabling the admin app go to the “more” menu on your back4app dashboard select “admin app” and click on “enable admin app ” set up your admin credentials by creating an initial admin account, which will also establish roles (like b4aadminuser ) and system classes enable admin app once activated, log in to the admin app to manage your application data admin app dashboard using the admin app for crud operations within the admin app, you can insert records click “add record” within a class (e g , items) to add new data view and edit records select a record to review its details or modify its fields delete records remove entries that are no longer needed this streamlined tool simplifies data management, allowing you to focus on your front end logic step 4 – linking your jquery application with back4app now that your backend is configured, it’s time to connect your jquery based application to back4app making ajax calls with jquery instead of using a parse sdk, you will make direct rest api calls using jquery's ajax methods below are examples of how to perform crud operations fetching items $ ajax({ url 'https //parseapi back4app com/classes/items', method 'get', headers { 'x parse application id' 'your application id', 'x parse rest api key' 'your rest api key' }, success function(response) { console log('items retrieved ', response results); }, error function(error) { console error('error fetching items ', error); } }); creating an item $ ajax({ url 'https //parseapi back4app com/classes/items', method 'post', headers { 'x parse application id' 'your application id', 'x parse rest api key' 'your rest api key', 'content type' 'application/json' }, data json stringify({ title 'new item', description 'a brief description of the new item ' }), success function(response) { console log('item created ', response); }, error function(error) { console error('error creating item ', error); } }); updating an item $ ajax({ url 'https //parseapi back4app com/classes/items/your item id', method 'put', headers { 'x parse application id' 'your application id', 'x parse rest api key' 'your rest api key', 'content type' 'application/json' }, data json stringify({ title 'updated title', description 'updated description ' }), success function(response) { console log('item updated ', response); }, error function(error) { console error('error updating item ', error); } }); deleting an item $ ajax({ url 'https //parseapi back4app com/classes/items/your item id', method 'delete', headers { 'x parse application id' 'your application id', 'x parse rest api key' 'your rest api key' }, success function(response) { console log('item deleted ', response); }, error function(error) { console error('error deleting item ', error); } }); integrate these ajax calls into your jquery scripts as needed to manage crud operations in your application step 5 – securing your backend configuring access control lists (acls) protect your data by setting up acls for your objects for example, to create an item that only the owner can read and write var acl = { " " { "read" false, "write" false }, "owner user id" { "read" true, "write" true } }; $ ajax({ url 'https //parseapi back4app com/classes/items', method 'post', headers { 'x parse application id' 'your application id', 'x parse rest api key' 'your rest api key', 'content type' 'application/json' }, data json stringify({ title 'private item', description 'this item is only accessible by its owner ', acl acl }), success function(response) { console log('private item created ', response); }, error function(error) { console error('error creating private item ', error); } }); setting class level permissions (clps) use the back4app dashboard to configure clps, ensuring that only authenticated users have access to sensitive classes step 6 – implementing user authentication managing user accounts back4app uses the built in user class for handling authentication in your jquery app, you can manage user sign ups and logins with rest api calls registering a new user $ ajax({ url 'https //parseapi back4app com/users', method 'post', headers { 'x parse application id' 'your application id', 'x parse rest api key' 'your rest api key', 'content type' 'application/json' }, data json stringify({ username 'newuser', password 'securepassword', email 'newuser\@example com' }), success function(response) { console log('user registered ', response); }, error function(error) { console error('registration error ', error); } }); logging in a user $ ajax({ url 'https //parseapi back4app com/login', method 'get', headers { 'x parse application id' 'your application id', 'x parse rest api key' 'your rest api key' }, data { username 'newuser', password 'securepassword' }, success function(response) { console log('user logged in ', response); }, error function(error) { console error('login error ', error); } }); you can expand on these methods to manage sessions, password resets, and other authentication features step 7 – deploying your jquery application back4app offers an easy deployment process you can deploy your jquery application using various approaches, including static site hosting or containerization 7 1 preparing your application build and minify use tools like webpack or gulp to bundle and minify your jquery scripts verify assets ensure that all your html, css, and javascript files are correctly compiled 7 2 organizing your project structure a typical project layout might look like this basic crud app jquery/ \| index html \| css/ \| | styles css \| js/ \| | app js \| | jquery min js \| assets/ \| | images/ \| | logo png \| readme md example ajax crud in app js $(document) ready(function() { // fetch and display items function loaditems() { $ ajax({ url 'https //parseapi back4app com/classes/items', method 'get', headers { 'x parse application id' 'your application id', 'x parse rest api key' 'your rest api key' }, success function(response) { $('#itemscontainer') empty(); $ each(response results, function(index, item) { $('#itemscontainer') append('\<div>' + '\<h3>' + item title + '\</h3>' + '\<p>' + item description + '\</p>' + '\</div>'); }); }, error function(error) { console error('error loading items ', error); } }); } // call the function on page load loaditems(); }); 7 3 deploying your application static hosting upload your project files to a static hosting provider such as github pages, netlify, or vercel dockerizing your application if you prefer containerization, include a dockerfile in your project root \# use an official node image to serve static files from node 14 alpine \# set the working directory workdir /app \# copy your project files into the container copy \# install a simple static server run npm install g serve \# expose the port used by the static server expose 3000 \# command to run the server cmd \["serve", " s", " "] after setting up your docker environment, link your github repository in the back4app dashboard under the web deployment section, configure build commands if necessary, and deploy your application step 8 – conclusion and next steps congratulations! you have successfully built a jquery based crud application integrated with back4app in this tutorial, you set up a project named basic crud app jquery , defined your data schema for items and users, and managed your data through the back4app admin app additionally, you connected your jquery front end via rest api calls and implemented essential security measures next steps expand the application add features like advanced filtering, detailed views, or live updates enhance backend capabilities explore cloud functions, integrate third party apis, or implement role based access further your skills dive into the back4app documentation https //www back4app com/docs and explore additional tutorials for more advanced functionalities happy coding and best of luck with your jquery crud application!