JavaScript/tutorials/threejs/idb.js at main · iu5git/JavaScript · GitHub

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// Простая обёртка для работы с IndexedDB

function openDB() {

return new Promise((resolve, reject) => {

const request = indexedDB.open("ModelGalleryDB", 1);

request.onupgradeneeded = (event) => {

const db = event.target.result;

if (!db.objectStoreNames.contains('models')) {

db.createObjectStore('models', { keyPath: 'id', autoIncrement: true });

}

};

request.onsuccess = () => resolve(request.result);

request.onerror = () => reject(request.error);

});

}

function addModelToDB(model) {

return openDB().then(db => new Promise((resolve, reject) => {

const tx = db.transaction('models', 'readwrite');

const store = tx.objectStore('models');

const req = store.add(model);

req.onsuccess = () => resolve(req.result);

req.onerror = () => reject(req.error);

}));

}

function getAllModelsFromDB() {

return openDB().then(db => new Promise((resolve, reject) => {

const tx = db.transaction('models', 'readonly');

const store = tx.objectStore('models');

const req = store.getAll();

req.onsuccess = () => resolve(req.result);

req.onerror = () => reject(req.error);

}));

}

function getModelByIdFromDB(id) {

return openDB().then(db => new Promise((resolve, reject) => {

const tx = db.transaction('models', 'readonly');

const store = tx.objectStore('models');

const req = store.get(Number(id));

req.onsuccess = () => resolve(req.result);

req.onerror = () => reject(req.error);

}));

}

JavaScript/tutorials/threejs/idb.js at main · iu5git/JavaScript · GitHub

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