Toggle Button on JS

Hello, I’m stuck on a toggle button that I created inside a table and I want to change the text and value of a book’s read status from yes to no and viceversa.

I managed to create an event inside the addBookToList() function.

When I click the toggle button, it fires an alert but I don’t know how to change the value and text inside the table (and also update the new value in the Local Storage).


<div class="heading">
    <h1>Library App</h1>
<div class="main-div">
    <div class="para-div">
        <p>Click the button below and add a new book to the list</p>
        <button id="addBook-btn">+ ADD BOOK</button>

    <form action="#" class="form">
        <label for="title">Title</label>
        <input type="text" id="title" required>
        <label for="author">Author</label>
        <input type="text" id="author" required>
        <label for="num-pages">No. of pages</label>
        <input type="number" id="num-pages" required>
        <span>Have you read this book?</span>
        <input type="radio" name="radio" id="yes" value="yes" checked>
        <label for="yes" class="yes">Yes</label>
        <input type="radio" name="radio" id="no" value="no">
        <label for="no" class="no">No</label>
        <div class="button-div">
            <button id="add-btn" type="submit">SUBMIT</button>
            <button id="cancel-btn" type="submit">CANCEL</button>

<div class="table-box">
                <th>No. of pages</th>
        <tbody class="list"></tbody>



// DOM values
let form = document.querySelector('.form');
const list = document.querySelector('.list');

// Book constructor
function Book(author, title, pages, read) {
    this.title = title; = author;
    this.pages = pages; = read;

// Event listener when clicking SUBMIT button on the form
form.addEventListener('submit', (e) => {

// Get values from User
let title = document.querySelector('#title').value;
let author = document.querySelector('#author').value;
let pages = document.querySelector('#num-pages').value;
let read = getRead();

// Instantiate book
const book = new Book(author, title, pages, read);

// Push book to the library and show it on the UI


function addBookToList() {

  const row = document.createElement('tr');

  myLibrary.forEach(value => {

    // Add the book to the table
    row.innerHTML = `
      <td><button class="toggle">Change read status</button></td>
      <td><a href="#" class="btn delete">X</a></td>`;


    const toggleBtn = document.querySelector('.toggle');
    toggleBtn.onclick = (function(value) {
        return function(){
 = !;

// Get value of radio button
function getRead() {
  const radioBtn = document.querySelectorAll('input[name="radio"]');
  let selectValue;

  for(const i of radioBtn) {
     if(i.checked) {
        selectValue = i.value;
 return selectValue;

You need to raise a more precise and informative question. Putting the entire repo is ineffective and very few people are willing to look through hundred lines to debug the specific issue you are having. Instead, try to do it in the most convenient way possible for others to help, maybe posting the specific piece of code that you are having trouble with.

To your question, in general, the flow goes like this for vanilla js

  1. setup the toggle button dom element with the event listener function
  2. Once an event is fired, do the following
    a. select the dom element in your case the table text by any selector, i.e id, class name
    b. change the text value on that dom element
    c. set local storage using localStorage.setItem(‘xxx’, ‘yyy’)
1 Like

Thanks, I’ll try to be more clear