每当我单击书签图标时,我都试图将对象保存在sessionStorage中。但是,而不是保存几个对象。每当我单击图标书签以保存一本书时;它被新值覆盖。
如何在sessionStorage中添加几个对象(书)?谢谢
这是代码段
try {
const responseData = await sendHttpRequest(
'GET',
"https://www.googleapis.com/books/v1/volumes?q=" + search );
const listOfBooks = responseData;
console.log(listOfBooks);
for (i=0; i < listOfBooks.items.length; i++) {
console.log(listOfBooks.items[i]);
const postEl = document.importNode(template.content, true);
console.log("postEl", postEl);
//BookMark Icon event
const target = postEl.querySelector('.icon-bookmark');
target.addEventListener('click', () => {
sessionStorage.setItem('bookStorage', bookStorage);
sessionStorage.setItem('bookStorage' , JSON.stringify(bookStorage));
const extractedBook = sessionStorage.getItem('bookStorage');
const extractedBookInfo = JSON.parse(sessionStorage.getItem('bookStorage'));
console.log(extractedBookInfo);
});
postEl.querySelector('.id').textContent = 'id: '+ listOfBooks.items[i].id;
postEl.querySelector('.titre').textContent = 'Titre: '+ listOfBooks.items[i].volumeInfo.title;
postEl.querySelector('.author').textContent = 'Auteur: '+ listOfBooks.items[i].volumeInfo.authors;
postEl.querySelector('.desc').textContent ='Description: '+ listOfBooks.items[i].volumeInfo.description;
postEl.querySelector('img').src = listOfBooks.items[i].volumeInfo.imageLinks.thumbnail;
if (postEl.querySelector('.desc').textContent.length > 200) {
postEl.querySelector('.desc').textContent = postEl.querySelector('.desc').textContent.substring(0,200);
}
if (!postEl.querySelector('img').src) {
postEl.querySelector('img').src ="resources/css/img/unavailable.png";
}
listElement.append(postEl);
const bookStorage = {
id: listOfBooks.items[i].id,
title: listOfBooks.items[i].volumeInfo.title,
author: listOfBooks.items[i].volumeInfo.authors,
desc: listOfBooks.items[i].volumeInfo.description,
img: listOfBooks.items[i].volumeInfo.imageLinks.thumbnail
};
}
} catch (error) {
alert(error.message);
}
}
btnRechercher.addEventListener('click', fetchBooks, false);
您只能在会话存储空间中使用唯一的密钥,这就是为什么每次插入具有相同密钥的新实体时,存储都会覆盖旧的实体。您可以针对并保存每本图书,例如“ book_1”,“ book_2”。或者,您可以存储一个数组,但是必须使用json.stringify(name_of_your_array),然后在要返回数组时可以使用json.parse(storage.getItem(key))