diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html index 23acfa71..2872bb2d 100644 --- a/debugging/book-library/index.html +++ b/debugging/book-library/index.html @@ -1,12 +1,9 @@ - - + + - - + Book Library + + @@ -28,46 +25,34 @@

Library

-
- - - - - - -
+
@@ -80,15 +65,7 @@

Library

- - - - - - - - - +
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js index 75ce6c1d..b239b4c9 100644 --- a/debugging/book-library/script.js +++ b/debugging/book-library/script.js @@ -1,103 +1,159 @@ -let myLibrary = []; +const myLibrary = []; -window.addEventListener("load", function (e) { - populateStorage(); - render(); -}); +function isValidAuthor(text) { + for (let char of text) { + const isLetter = + (char >= "a" && char <= "z") || (char >= "A" && char <= "Z"); -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 - ); - myLibrary.push(book1); - myLibrary.push(book2); - render(); + const isAllowedSymbol = ". ',&-".includes(char); + + if (!isLetter && !isAllowedSymbol) { + return false; + } } + return true; +} + +function isValidTitle(text) { + for (let char of text) { + const isLetter = + (char >= "a" && char <= "z") || (char >= "A" && char <= "Z"); + + const isNumber = char >= "0" && char <= "9"; + + const isAllowedSymbol = " '.,!?&:-()\"".includes(char); + + if (!isLetter && !isNumber && !isAllowedSymbol) { + return false; + } + } + return true; +} + +function saveLibrary() { + localStorage.setItem("myLibrary", JSON.stringify(myLibrary)); } -const title = document.getElementById("title"); -const author = document.getElementById("author"); -const pages = document.getElementById("pages"); -const check = document.getElementById("check"); +document.getElementById("bookForm").addEventListener("submit", function (e) { + e.preventDefault(); + + const title = document.getElementById("title").value; + const author = document.getElementById("author").value; + const pages = document.getElementById("pages").value; + const read = document.getElementById("check").checked; + + if (!isValidAuthor(author)) { + alert("Invalid author name"); + return; + } + + if (!isValidTitle(title)) { + alert("Invalid book title"); + return; + } + + const success = populateStorage(title, author, pages, read); + + if (!success) return; // ❗ STOP if invalid + + render(); + saveLibrary(); + + this.reset(); + $("#demo").collapse("hide"); +}); //check the right input from forms and if its ok -> add the new book (object in array) //via Book function and start render function -function submit() { - if ( - title.value == null || - title.value == "" || - pages.value == null || - pages.value == "" - ) { - alert("Please fill all fields!"); + +function populateStorage(title, author, pages, check) { + if (!/^\d+$/.test(pages) || Number(pages) < 1 || Number(pages) > 5000) { + alert("Pages must be a whole number between 1 and 5000"); return false; - } else { - let book = new Book(title.value, title.value, pages.value, check.checked); - library.push(book); - render(); } + + let newBook = new Book(title, author, pages, check); + myLibrary.push(newBook); + return true; } function Book(title, author, pages, check) { this.title = title; this.author = author; - this.pages = pages; + this.pages = Number(pages); this.check = check; } 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); - } + const tableBody = document.querySelector("#display tbody"); + tableBody.innerHTML = ""; + //insert updated row and cells - let length = myLibrary.length; - for (let i = 0; i < length; i++) { - let row = table.insertRow(1); + myLibrary.forEach((book, i) => { + let row = tableBody.insertRow(); 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; + titleCell.innerText = book.title; + authorCell.innerText = book.author; + pagesCell.innerText = book.pages; //add and wait for action for read/unread button let changeBut = document.createElement("button"); - changeBut.id = i; - changeBut.className = "btn btn-success"; + + changeBut.className = book.check ? "btn btn-success" : "btn btn-secondary"; + + changeBut.innerText = book.check ? "Read" : "Unread"; + 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; + book.check = !book.check; + saveLibrary(); render(); }); //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"; + let delBut = document.createElement("button"); + + delBut.className = "btn btn-danger btn-sm"; delBut.innerHTML = "Delete"; - delBut.addEventListener("clicks", function () { - alert(`You've deleted title: ${myLibrary[i].title}`); - myLibrary.splice(i, 1); + + deleteCell.appendChild(delBut); + + delBut.addEventListener("click", function () { + const deletedTitle = book.title; + myLibrary.splice(myLibrary.indexOf(book), 1); + saveLibrary(); render(); + alert(`You've deleted title: ${deletedTitle}`); }); - } + }); +} + +function loadDefaultBooks() { + myLibrary.push( + new Book("Robinson Crusoe", "Daniel Defoe", "252", true), + new Book("The Old Man and the Sea", "Ernest Hemingway", "127", false) + ); } + +window.onload = () => { + myLibrary.length = 0; + + const saved = localStorage.getItem("myLibrary"); + + if (saved) { + const parsed = JSON.parse(saved); + if (Array.isArray(parsed) && parsed.length > 0) { + myLibrary.push(...parsed); + } else { + loadDefaultBooks(); + } + } else { + loadDefaultBooks(); + } + render(); +};