-
+
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d..bebd92f5 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,44 +1,51 @@
let myLibrary = [];
+const titleInput = document.getElementById("title");
+const authorInput = document.getElementById("author");
+const pagesInput = document.getElementById("pages");
+const isReadInput = document.getElementById("check");
+
+const submitBtn = document.getElementById("submitBtn");
+submitBtn.addEventListener("click", submit);
+
window.addEventListener("load", function (e) {
populateStorage();
render();
});
+//just one thing need to check
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("Robison 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();
}
}
-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 == ""
- ) {
+ //if any of the information is missing show an alert
+ const titleValue = titleInput.value.trim();
+ const authorValue = authorInput.value.trim();
+ const pagesValue = Number(pagesInput.value);
+ if (!titleValue || !authorValue || !Number.isInteger(pagesValue) || pagesValue <= 0) {
alert("Please fill all fields!");
- return false;
+ return;
} else {
- let book = new Book(title.value, title.value, pages.value, check.checked);
- library.push(book);
+ const book = new Book(
+ titleValue,
+ authorValue,
+ pagesValue,
+ isReadInput.checked
+ );
+ myLibrary.push(book);
render();
}
}
@@ -51,52 +58,45 @@ 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-- {
- table.deleteRow(n);
- }
+ const tableBody = document.getElementById("tbody");
+ tableBody.textContent = "";
//insert updated row and cells
- let length = myLibrary.length;
+ const 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;
+ const row = tableBody.insertRow(); // why (1) not i+1 insert
with four
+ const titleCell = row.insertCell(0); // the table.rows and row.cells are HTMLCollection,not a real array, but they behave like array(indexed,length) . they are DOM collections
+ const authorCell = row.insertCell(1);
+ const pagesCell = row.insertCell(2);
+ const wasReadCell = row.insertCell(3);
+ const deleteCell = row.insertCell(4); // it is like insert for