bigdatascreen/public/archive/static/js/libs/Storage.js

function Storage(Fevent) {

	const indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;

	if ( indexedDB === undefined ) {

		console.warn( 'Storage: IndexedDB not available.' );
		return { init: function () {}, get: function () {}, set: function () {}, clear: function () {} };

	}

	const name = 'threejs-editor';
	const version = 1;

	let database;

	const requestx = indexedDB.open( name, version );


	// 打开数据库
	const request = indexedDB.open( name, version );
	var db;

	request.onsuccess = function(event) {
		db = event.target.result;
		// 存储数据
		var transaction = db.transaction( [ 'states' ], 'readwrite' );
		var store = transaction.objectStore('states');
		// store.add({ id: 1, data: 'some data' });

		// 检索数据
		var getRequest = store.get(window.parkId);
		getRequest.onsuccess = function(event) {
			var result = event.target.result;
			Fevent(result)

		};
	};


	//
	//
	// request.onupgradeneeded = function ( event ) {
	//
	// 	const db = event.target.result;
	//
	// 	if ( db.objectStoreNames.contains( 'states' ) === false ) {
	//
	// 		db.createObjectStore( 'states' );
	//
	// 	}
	//
	// };
	//
	// request.onsuccess = function ( event ) {
	//
	// 	database = event.target.result;
	//
	// 	callback();
	//
	// };
	//
	// request.onerror = function ( event ) {
	//
	// 	console.error( 'IndexedDB', event );
	//
	// };
	//
	//
	// const transaction = database.transaction( [ 'states' ], 'readwrite' );
	// const objectStore = transaction.objectStore( 'states' );
	// const request = objectStore.get( 0 );
	// request.onsuccess = function ( event ) {
	//
	// 	callback( event.target.result );
	//
	// };
	//
	return ;

}

export { Storage };