Steps for modifying an element in an array using Javascript

Currently, I am a beginner in the realm of JavaScript and I am trying to build a todo-style application. So far, I have successfully managed to create, display, and delete items from an array. However, I am facing challenges when it comes to editing these items.

All these functionalities are achieved using the uuidv4 library to generate unique IDs for each item in the array.

Once an individual ID is assigned to an array item, dynamic buttons are generated - one for deleting the item and another for editing it.

When the edit button is clicked, my goal is to open a modal containing the content of the selected array item. After making edits, the "edit" button within the modal should trigger an edit function to update the changes and then re-render the array.

Unfortunately, I am encountering a problem where I cannot seem to get the modal dialog box to open when clicking the edit button.

Please find below the code responsible for creating the necessary structure; note that the code for creation, rendering, and deletion has been omitted.

// Generate the DOM structure for a todo

const generateTodoDOM = function(todo) {
  const todoEl = document.createElement("div");
  // Remaining code for generating todos
};

The following code snippet illustrates how the modal functionality is implemented:

//Edit modal todo by id
const editModal = function(id) {
  // Code for handling modal operations
};

Upon clicking the "submitEditTodo" button, the provided edit function will be executed as shown below:

//Edit todo by id
const editTodo = function(id) {
  // Implementation details for editing todos
};

Apart from the functions mentioned above, there are other functions for saving data (`saveTodos`) and rendering elements (`renderTodos`). Please refer to the HTML and CSS snippets related to the modal display.

Answer №1

Here are some key points to consider for making adjustments to achieve your desired outcome:

  1. It seems like you are continuously adding new listeners to the modal every time you click an edit button for a todo. This should ideally be set only once, or remove the listeners when the modal is closed.

  2. The function editModal doesn't actually open the modal; it adds a listener to the #modal-btn button, which will then open the modal upon the next button click.

  3. You are assigning id's to both the outer div and the edit button without relating them to the todo element being created. As a result, all elements end up with the same id, but id's are supposed to be unique identifiers. Consider using the class attribute for grouping multiple elements instead.

  4. Your function "editTodo" calls itself, causing infinite recursion. Be cautious of reusing function names to prevent this issue.

Based on the provided snippets, below is a basic implementation to accomplish what you're aiming for:

// Open
const openModal = function() {
  document.querySelector("#my-modal").style.display = "block";
}

// Close
const closeModal = function() {
  document.querySelector("#my-modal").style.display = "none";
}

function initModal() {
  // Event handling logic here...
}

// Other functions and methods...

/*
CSS styling for modal etc.
*/

.modal {
  /* Modal styles */
}

/* Additional CSS styles... */

<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div id="todo-container">
  <!-- Your todo items will go here -->
</div>

<!-- Edit modal -->
<div id="my-modal" class="modal">
  <!-- Modal content goes here -->
</div>
<!-- End modal --> 
</body>
</html>

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