书单；增删改查，使用leancloud
代码示例：
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const {Object, User, Query} = require(‘../../vendor/leancloud-storage’);
Page({
data: {
objectId: null,
title: ”,
newBookTitle: ”,
books: [‘book1’]
},
onTitleEdited: function({detail: {value}}) {
this.setData({
title: value
});
},
onRemoveBook: function({target: {dataset: {name}}}) {
this.setData({
books: this.data.books.filter( bookName => {
return bookName !== name;
})
});
},
onNewBookEdited: function({detail: {value}}) {
this.setData({
newBookTitle: value
});
},
onNewBookAdd: function() {
this.setData({
books: this.data.books.concat(this.data.newBookTitle),
newBookTitle: ”
});
},
onSubmit: function() {
if (!this.data.objectId) {
new Object(‘BookList’).save({
title: this.data.title,
books: this.data.books,
author: User.current()
}).then( () => {
wx.navigateTo({
url: ‘../index/index’,
});
}).catch(console.error);
} else {
}
}
});
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