web-sql

问题 I have a WebSQL database, and am trying to connect to a PHP script, and dump that database into another one on the server. How do I format the javascript / jquery in order to do that correctly? I guess I am asking, how do I dump all of my data in my tables into my PHP script, so that it can update and insert the data into another database on the server? I have no clue where to even begin with this. 回答1: The terminology in this question is a little confusing. If you're trying to copy the

问题 I have created local DB (WebSQL) in HTML5. The content of the local storage has to be sent as an attachment in an email. The email client will be opened using javascript mailto feature. The requirement is when the email client opens it should have the content of the local storage attached as a file (in any file format like xml, csv or text) in the email client window. As I understand, the content will have to be exported to a file first and then attched to email. Can this be done using File

问题 I have the following Java: DateFormat formatter = new SimpleDateFormat( "EEE MMM dd yyyy HH:mm:ss zZ (zzzz)", Locale.ENGLISH); Calendar cal = Calendar.getInstance(); cal.set(2011, Calendar.APRIL, 1); out.println(formatter.format(cal.getTime())); out.println(); Date date; try { date = formatter .parse("Fri Apr 01 2011 00:00:00 GMT-0400 (Eastern Daylight Time)"); } catch (ParseException e) { out.println("Failed to parse date: " + e.getMessage()); e.printStackTrace(out); } This is in a servlet,

问题 I've been fetching rows from a WebSQL DB, and the returned rows seems to be readonly. db.readTransaction( function(t1) { t1.executeSql( "SELECT * FROM Foo WHERE id = ?", [1], function(t2, resultSet){ var foo = resultSet.rows.item(0); console.log("before: " + foo.col1); foo.col1 = "new value"; console.log("after: " + foo.col1); console.log("sealed? " + Object.isSealed(foo)); console.log("frozen? " + Object.isFrozen(foo)); } ); } ); It prints: before: old value after: old value sealed? false

问题 I'm working on a bit of JavaScript that interacts with a client-side SQLite database, via the newish window.openDatabase(...) , database.transaction(...) and related APIs. As most of you know when you execute a query in this way it is an asynchronous call, which is typically good. You can make the call and handle the results as appropriate with callbacks. In my current situation I'm working on an algo for a client that does some hierarchy walking in the locally stored database. The part of

问题 I want to change from WebSql to Indexeddb. However, how would one do SQL queries like SELECT * FROM customers WHERE ssn = '444-44-4444' and emal = 'bill@bill@company.com' SELECT * FROM customers WHERE ssn = '444-44-4444' and emal = 'bill@bill@company.com' and age = 30 SELECT * FROM customers WHERE ssn = '444-44-4444' and emal = 'bill@bill@company.com' and name = 'Bill' etc with IndexedDB ? For example, I noticed while reading the documentation of indexedDb, that all the examples only query

问题 When my app stores data locally on a phone, how permanent is that storage? I'll elaborate the exact situation: I'm building an app with jQueryMobile and Phonegap. It's essentially a browser app, but using Phonegap lets me package it and sell it in the app stores, among other advantages. Phonegap offers two ways of storage, both of which functions harmonize native functions of iOs, Android, Blackberry and some other OSs: localStorage (which is primitive key-value pairs), and a Web SQL database

问题 My application should support offline mode on the following browsers: IE Chrome Firefox Safari (supports WebSQL only) and also application using KendoUI for UI. I have looked at JayData which looks good fit for my requirement but I heard JayData wouldn't support some good features like Transactions and so. please share your feedback on Jaydata. also suggest best wrapper to support both webSql and indexedDB? 回答1: JayData Pro does support transactions, it's free for non-commercial use and

问题 This question came to the JayData forum but I decided to share it here as this is an interesting topic and maybe others can benefit from it too. by V3nom » Tue Oct 23, 2012 2:06 pm I struggle to find information on websql transactions in JayData. Can anyone give a hint or a link ? http://jaydata.org/forum/viewtopic.php?f=3&t=101&sid=8accd7bf5bed872b6e88d36004a280c5 回答1: Transactions are not an easy thing to support on a storage agnostic manner. Therefore there is no explicit transaction

问题 I'm develop a web app and I have an existing database.I'm trying to getting the data from database using WebSQL but getting error as "ExceptionReferenceError: tx is not defined " code: var databaseSync = null; try { databaseSync = openDatabase("database", "1.0", "Database", 10 * 1024 * 1024); databaseSync.transaction(function(tx){ tx.executeSql('SELECT distinct(Subject) FROM Data', [], function (tx, cb_results){ var len = cb_results.rows.length; var results = []; for (i = 0; i < len; i++) {