Real-Life Applications of jQuery:

Dropdown Menus Animation:
- jQuery is used to make dropdown menus appear smoothly on web pages. This is a common user interface enhancement where, instead of a sudden appearance, dropdown menus can have a more visually appealing and smooth transition.
AJAX Implementation:
- jQuery simplifies the implementation of AJAX (Asynchronous JavaScript and XML). It is used to update parts of a web page without requiring a full page reload. This allows for more dynamic and responsive web applications, as only specific portions of the page are updated with new data from the server.

Free Response and MCQ:

CRUD:
- CRUD stands for:
  - Create
  - Read
  - Update
  - Delete
HTTP Verbs for CRUD Actions:
- The HTTP verbs associated with each CRUD action are:
  - Create (C): POST
  - Read (R): GET
  - Update (U): PUT
  - Delete (D): DELETE
jQuery Definition:
- jQuery is described as a JavaScript library that simplifies HTML document manipulation, AJAX, and web development interaction. It provides a set of functions and utilities that make it easier to work with and manipulate HTML documents, handle events, and perform asynchronous requests.
jQuery Event Handler for a Data Table:
- Matching A, B, and C into the jQuery event handler:
```
$(C).on(A, B, function() {
  // code
});
```
  Here, A is the event type (‘click’), B is the selector for the target element (‘.delete-btn’), and C is the overall target element (‘#data-table’). This event handler is set up to trigger a function when an element with the class ‘.delete-btn’ inside the element with id ‘data-table’ is clicked.
Use of jQuery with CRUD:
- jQuery is used with CRUD operations because it simplifies the process of performing Create, Read, Update, and Delete operations on data without writing extensive code. It facilitates easy interaction between the front end (using jQuery) and the back end, making it more efficient to handle data operations in web development.

Finish the update JQUERY function

its all the way at the end, you should see the green comment
you can choose to use the two lines I’ve already given or not

ID	Name	Email	Actions

Explanation of Code:

External Libraries

<script src="https://code.jquery.com/jquery-3.6.4.min.js"></script>

This line imports the jQuery library, a powerful tool for simplifying JavaScript code and working with the Document Object Model (DOM) in a concise and efficient manner.

Styling

<style>
  /* CSS styling for the page */
</style>

This section contains inline CSS styles that define the visual aspects of the HTML elements. jQuery doesn’t directly handle styling but works seamlessly with the DOM, which includes styling.

HTML Table Structure

<table id="data-table">
  <!-- Table header -->
  <thead>
    <tr>
      <th>ID</th>
      <th>Name</th>
      <th>Email</th>
      <th>Actions</th>
    </tr>
  </thead>
  <!-- Table body (data will be dynamically added here) -->
  <tbody>
    <!-- Data will be dynamically added here -->
  </tbody>
</table>

Here, the HTML table is the structure that jQuery will interact with. It will dynamically add and manipulate data within this table.

Create Button

<button id="create-btn">Create Barbie Character</button>

This button, with the ID “create-btn,” will be selected and manipulated using jQuery to trigger the creation of a new Barbie character.

jQuery Section

<script>
  // JavaScript code using jQuery
</script>

This section contains jQuery code that simplifies DOM manipulation and event handling.

Data Initialization

const initialData = [
  { id: 1, name: 'Barbie', email: 'barbie@example.com' },
  { id: 2, name: 'Ken', email: 'ken@example.com' }
];

This array, initialData, is the initial set of Barbie character data that jQuery will interact with.

Rendering Function

function renderData(data) {
  const tableBody = $('#data-table tbody');
  tableBody.empty();

  // Dynamically render data into the table using jQuery
  data.forEach(item => {
    const row = `
      <tr>
        <td>${item.id}</td>
        <td>${item.name}</td>
        <td>${item.email}</td>
        <td>
          <button class="update-btn" data-id="${item.id}">Update</button>
          <button class="delete-btn" data-id="${item.id}">Delete</button>
        </td>
      </tr>
    `;
    tableBody.append(row);
  });
}

jQuery simplifies the selection and manipulation of DOM elements. In this case, it selects the table body and dynamically populates it with rows based on the provided data.

Create Barbie Character Function

function createBarbieCharacter() {
  // Function using jQuery to prompt the user and update the table
}

This function, triggered by the “Create Barbie Character” button, uses jQuery to prompt the user for input and dynamically updates the table with the new character data.

Event Handlers

$('#create-btn').on('click', createBarbieCharacter);
$('#data-table').on('click', '.update-btn', function() { /* ... */ });
$('#data-table').on('click', '.delete-btn', function() { /* ... */ });

jQuery event handlers are employed here. The first line associates a click event with the “Create Barbie Character” button, while the next two lines handle click events on the update and delete buttons within the data table.

Update and Delete Functions

// Functions using jQuery to update and delete Barbie characters

Initial Rendering

// Initial rendering of data using jQuery
renderData(initialData);
</script>

The script concludes with the initial rendering of the table using jQuery to display the initial set of Barbie character data.

In summary, this code leverages jQuery to streamline the manipulation of the DOM, making it easier to create, update, and delete Barbie character data on the web page. The code showcases jQuery’s power in handling events, selecting elements, and dynamically updating the HTML content.

JQUERY & CRUD HACKS • 13 min read

Description