diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html index 23acfa71..91a2c341 100644 --- a/debugging/book-library/index.html +++ b/debugging/book-library/index.html @@ -1,10 +1,10 @@ - + - + + My book library @@ -28,47 +28,50 @@

Library

-
- - - - - - - +
+
+ + + + + + + + + +
+ type="checkbox" + class="form-check-input" + id="check" + />Read + + +
+ +
+ @@ -91,6 +94,6 @@

Library

- + - + \ No newline at end of file diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js index 75ce6c1d..dc2ea2e5 100644 --- a/debugging/book-library/script.js +++ b/debugging/book-library/script.js @@ -1,103 +1,125 @@ -let myLibrary = []; +const myLibrary = []; -window.addEventListener("load", function (e) { +// When page loads, add starter books and render +window.addEventListener("load", function () { populateStorage(); render(); }); function populateStorage() { - if (myLibrary.length == 0) { - let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true); - let book2 = new Book( + if (myLibrary.length === 0) { + const book1 = new Book("Robinson Crusoe", "Daniel Defoe", 252, true); + const book2 = new Book( "The Old Man and the Sea", "Ernest Hemingway", - "127", + 127, true ); - myLibrary.push(book1); - myLibrary.push(book2); - render(); + myLibrary.push(book1, book2); } } -const title = document.getElementById("title"); -const author = document.getElementById("author"); -const pages = document.getElementById("pages"); -const check = document.getElementById("check"); - -//check the right input from forms and if its ok -> add the new book (object in array) -//via Book function and start render function -function submit() { - if ( - title.value == null || - title.value == "" || - pages.value == null || - pages.value == "" - ) { - alert("Please fill all fields!"); - return false; - } else { - let book = new Book(title.value, title.value, pages.value, check.checked); - library.push(book); - render(); +// === DOM elements === +const bookFormEl = document.getElementById("bookForm"); +const titleInputEl = document.getElementById("title"); // .value is a string +const authorInputEl = document.getElementById("author"); // .value is a string +const pagesInputEl = document.getElementById("pages"); // .value is a string +const isReadCheckboxEl = document.getElementById("check"); // .checked is boolean + +// Check the form and, if OK, add a new book and re-render +bookFormEl.addEventListener("submit", handleBookFormSubmit); + +function handleBookFormSubmit(event) { + event.preventDefault(); // stop page reload + + // 🔹 Normalise / preprocess input + const title = titleInputEl.value.trim(); + const author = authorInputEl.value.trim(); + const pages = Number(pagesInputEl.value); + const isRead = isReadCheckboxEl.checked; + + // 🔹 Validation + if (!title || !author) { + alert("Title and author are required."); + return; + } + + if (!Number.isFinite(pages) || pages <= 0) { + alert("Pages must be a positive number."); + return; } + + // 🔹 Create and store the new book + const newBook = new Book(title, author, pages, isRead); + myLibrary.push(newBook); + + render(); + bookFormEl.reset(); } +// Book constructor function Book(title, author, pages, check) { this.title = title; this.author = author; this.pages = pages; - this.check = check; + this.check = check; // true = read, false = not read } function render() { - let table = document.getElementById("display"); - let rowsNumber = table.rows.length; - //delete old table - for (let n = rowsNumber - 1; n > 0; n-- { - table.deleteRow(n); - } - //insert updated row and cells - let length = myLibrary.length; - for (let i = 0; i < length; i++) { - let row = table.insertRow(1); - let titleCell = row.insertCell(0); - let authorCell = row.insertCell(1); - let pagesCell = row.insertCell(2); - let wasReadCell = row.insertCell(3); - let deleteCell = row.insertCell(4); - titleCell.innerHTML = myLibrary[i].title; - authorCell.innerHTML = myLibrary[i].author; - pagesCell.innerHTML = myLibrary[i].pages; - - //add and wait for action for read/unread button - let changeBut = document.createElement("button"); - changeBut.id = i; - changeBut.className = "btn btn-success"; - wasReadCell.appendChild(changeBut); - let readStatus = ""; - if (myLibrary[i].check == false) { - readStatus = "Yes"; - } else { - readStatus = "No"; - } - changeBut.innerText = readStatus; - - changeBut.addEventListener("click", function () { - myLibrary[i].check = !myLibrary[i].check; + const table = document.getElementById("display"); + const tbody = table.querySelector("tbody"); + + // 🔹 Clear previous rows in one go (keep header) + tbody.innerHTML = ""; + + // insert updated rows and cells + myLibrary.forEach((book, index) => { + const row = document.createElement("tr"); + + const titleCell = document.createElement("td"); + const authorCell = document.createElement("td"); + const pagesCell = document.createElement("td"); + const wasReadCell = document.createElement("td"); + const deleteCell = document.createElement("td"); + + // 🔹 Use textContent (safe & fast) + titleCell.textContent = book.title; + authorCell.textContent = book.author; + pagesCell.textContent = book.pages; + + // Read/unread button + const readBtn = document.createElement("button"); + readBtn.type = "button"; + readBtn.className = "btn btn-success btn-sm"; + readBtn.textContent = book.check ? "Yes" : "No"; + readBtn.addEventListener("click", () => { + myLibrary[index].check = !myLibrary[index].check; render(); }); + wasReadCell.appendChild(readBtn); + + // Delete button + const deleteBtn = document.createElement("button"); + deleteBtn.type = "button"; + deleteBtn.className = "btn btn-warning btn-sm"; + deleteBtn.textContent = "Delete"; - //add delete button to every row and render again - let delButton = document.createElement("button"); - delBut.id = i + 5; - deleteCell.appendChild(delBut); - delBut.className = "btn btn-warning"; - delBut.innerHTML = "Delete"; - delBut.addEventListener("clicks", function () { - alert(`You've deleted title: ${myLibrary[i].title}`); - myLibrary.splice(i, 1); + deleteBtn.addEventListener("click", () => { + const confirmed = confirm(`Delete "${book.title}"?`); + if (!confirmed) return; + + myLibrary.splice(index, 1); render(); }); - } + + deleteCell.appendChild(deleteBtn); + + row.appendChild(titleCell); + row.appendChild(authorCell); + row.appendChild(pagesCell); + row.appendChild(wasReadCell); + row.appendChild(deleteCell); + + tbody.appendChild(row); + }); }