diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html index 23acfa71e..9d249f08c 100644 --- a/debugging/book-library/index.html +++ b/debugging/book-library/index.html @@ -1,19 +1,23 @@ - + - + The Book Library + + + + @@ -23,51 +27,67 @@

Library

Add books to your virtual library

-
-
- - - - - - -
+
@@ -80,17 +100,8 @@

Library

- - - - - - - - - -
- + + diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js index 75ce6c1d3..ff871549f 100644 --- a/debugging/book-library/script.js +++ b/debugging/book-library/script.js @@ -1,45 +1,78 @@ -let myLibrary = []; +const myLibrary = []; -window.addEventListener("load", function (e) { +const titleInput = document.getElementById("title"); +const authorInput = document.getElementById("author"); +const pagesInput = document.getElementById("pages"); +const readInput = document.getElementById("check"); +const form = document.getElementById("form"); + +window.addEventListener("load", function () { populateStorage(); render(); + + if (form) { + form.addEventListener("submit", function (event) { + event.preventDefault(); + submit(); + }); + } }); function populateStorage() { - if (myLibrary.length == 0) { - let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true); - let book2 = new Book( - "The Old Man and the Sea", - "Ernest Hemingway", - "127", - true + if (myLibrary.length === 0) { + // Initialize sample data with two books + myLibrary.push(new Book("Robinson Crusoe", "Daniel Defoe", 252, true)); + + myLibrary.push( + new Book("The Old Man and the Sea", "Ernest Hemingway", 127, true) ); - myLibrary.push(book1); - myLibrary.push(book2); - render(); } } -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 == "" - ) { + // Get cleaned input values + const titleValue = titleInput.value.trim(); + const authorValue = authorInput.value.trim(); + const pagesValue = pagesInput.value.trim(); + + // Check for empty input fields + if (!titleValue || !authorValue || !pagesValue) { alert("Please fill all fields!"); - return false; - } else { - let book = new Book(title.value, title.value, pages.value, check.checked); - library.push(book); - render(); + return; + } + + // Make sure pages contains digits only + if (!/^\d+$/.test(pagesValue)) { + alert("Number of pages needs to be a valid integer greater than 0!"); + return; + } + + // Convert pages to a number + const pageNumber = Number(pagesValue); + + // Check that pages is greater than zero + if (pageNumber <= 0) { + alert("Number of pages needs to be a valid integer greater than 0!"); + return; + } + + // Create a new book using cleaned and validated values + const newBook = new Book( + titleValue, + authorValue, + pageNumber, + readInput.checked + ); + + // Add the new book + myLibrary.push(newBook); + + // Update the display + render(); + + // Reset the entire form + if (form) { + form.reset(); } } @@ -51,53 +84,56 @@ function Book(title, author, pages, check) { } function render() { - let table = document.getElementById("display"); - let rowsNumber = table.rows.length; - //delete old table - for (let n = rowsNumber - 1; n > 0; n-- { + const table = document.getElementById("display"); + const rowsNumber = table.rows.length; + + // Remove existing rows except header + 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; + + for (let i = 0; i < myLibrary.length; i++) { + const row = table.insertRow(); + + // Insert book information + row.insertCell().innerText = myLibrary[i].title; + row.insertCell().innerText = myLibrary[i].author; + row.insertCell().innerText = myLibrary[i].pages; + + // Read/Unread button + const readCell = row.insertCell(); + + const changeBut = document.createElement("button"); changeBut.className = "btn btn-success"; - wasReadCell.appendChild(changeBut); - let readStatus = ""; - if (myLibrary[i].check == false) { - readStatus = "Yes"; - } else { - readStatus = "No"; - } - changeBut.innerText = readStatus; + changeBut.innerText = myLibrary[i].check ? "Yes" : "No"; changeBut.addEventListener("click", function () { myLibrary[i].check = !myLibrary[i].check; render(); }); - //add delete button to every row and render again - let delButton = document.createElement("button"); - delBut.id = i + 5; - deleteCell.appendChild(delBut); + readCell.appendChild(changeBut); + + // Delete button + const deleteCell = row.insertCell(); + + const delBut = document.createElement("button"); delBut.className = "btn btn-warning"; - delBut.innerHTML = "Delete"; - delBut.addEventListener("clicks", function () { - alert(`You've deleted title: ${myLibrary[i].title}`); + delBut.innerText = "Delete"; + + delBut.addEventListener("click", function () { + const deletedTitle = myLibrary[i].title; + + // Delete the book first myLibrary.splice(i, 1); + + // Update the display render(); + + // Show confirmation after deletion + alert(`You've deleted title: ${deletedTitle}`); }); + + deleteCell.appendChild(delBut); } }