Javascript Sql Error
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About
Websql Executesql
Us Learn more about Stack Overflow the company Business Learn more about hiring html5 web sql database example developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join web sql select query the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to get the context
Javascript Executesql
of a Web Sql error? up vote 4 down vote favorite 1 I start deploying an offline application on iPhones, but it's still under heavy developpment. I have a simple error handler for my query : db.transaction(tx) { tx.executeSql("SELECT * FROM TABLE",[], successHandler, errorHandler); }); function errorHandler(transaction, error) { alert("Error : " + error.message); } When I test myself the application, and get an error, I
Websql Transaction Error Callback
manage to find what was the query generating the error. But when it's my users (distant users, of course), it's very difficult, as the error messages are not specific. Is there a way to add context info to my error messages, for example the sql query, or a comment parameter ? javascript web-sql share|improve this question asked May 15 '13 at 8:06 Matthieu 363418 add a comment| 2 Answers 2 active oldest votes up vote 10 down vote accepted You could use a pattern like this: db.transaction(tx) { doQuery(tx, "SELECT * FROM TABLE",[],theSuccessHandler) }); function doQuery(tx, query, values, successHandler) { tx.executeSql(query, values, successHandler, errorHandler); function errorHandler(transaction, error) { alert("Error : " + error.message + " in " + query); } } share|improve this answer answered May 15 '13 at 9:36 Myrne Stol 6,61432441 add a comment| Did you find this question interesting? Try our newsletter Sign up for our newsletter and get our top new questions delivered to your inbox (see an example). Subscribed! Success! Please click the link in the confirmation email to activate your subscription. up vote 0 down vote I ehanced Myrne answer to add query parameters and a free context strin
JavaScript DatabaseBeginning in Safari 3.1 and iOS 2.0, Safari supports the HTML5 JavaScript database class. The JavaScript database class, based on SQLite, provides a relational database intended for local storage of content that is too large to conveniently store in cookies (or is websql delete database too important to risk accidentally deleting when the user clears out his or her cookies).Because
Executesql Error Callback
it provides a relational database model, the JavaScript database class makes it easy to work with complex, interconnected data in a webpage. You indexeddb might use it as an alternative to storing user-generated data on the server (in a text editor, for example), or you might use it as a high-speed local cache of information the user has recently queried from http://stackoverflow.com/questions/16559832/how-to-get-the-context-of-a-web-sql-error a server-side database.The sections in this chapter guide you through the basic steps of creating a JavaScript-based application that takes advantage of the JavaScript database.Note:This chapter covers only the JavaScript API for making SQL queries, not the different types of queries themselves. At this level, all queries behave similarly (except that not all queries provide any actual data to their data callbacks).For more detailed coverage of what SQL queries you can actually make, read Relational Database https://developer.apple.com/library/content/documentation/iPhone/Conceptual/SafariJSDatabaseGuide/UsingtheJavascriptDatabase/UsingtheJavascriptDatabase.html Basics. That chapter provides an assortment of queries that cover most common database tasks.Creating and Opening a DatabaseBefore you can use a database or create tables within the database, you must first open a connection to the database. When you open a database, an empty database is automatically created if the database you request does not exist. Thus, the processes for opening and creating a database are identical.To open a database, you must obtain a database object with the openDatabase method as follows:Listing 4-1Creating and opening a databasetry { if (!window.openDatabase) { alert('not supported'); } else { var shortName = 'mydatabase'; var version = '1.0'; var displayName = 'My Important Database'; var maxSize = 65536; // in bytes var db = openDatabase(shortName, version, displayName, maxSize); // You should have a database instance in db. }} catch(e) { // Error handling code goes here. if (e == 2) { // Version number mismatch. alert("Invalid database version."); } else { alert("Unknown error "+e+"."); } return;} alert("Database is: "+db);For now you should set the version number field to 1.0; database versioning is described in more detail in Working With Database Versions.The short name is the name for your database as stored on disk (usually in ~/Library/Safari/Databases/). This argument controls which database you are accessing.The display name field contains a name to be used by the browser
Learn Bootstrap Learn Graphics Learn Icons Learn How To JavaScript Learn JavaScript Learn jQuery Learn jQueryMobile Learn AppML Learn AngularJS Learn JSON Learn AJAX http://www.w3schools.com/php/func_mysqli_error.asp Server Side Learn SQL Learn PHP Learn ASP Web Building Web Templates Web Statistics Web Certificates XML Learn XML Learn XML AJAX Learn XML DOM Learn XML DTD Learn http://html5doctor.com/introducing-web-sql-databases/ XML Schema Learn XSLT Learn XPath Learn XQuery × HTML HTML Tag Reference HTML Event Reference HTML Color Reference HTML Attribute Reference HTML Canvas Reference HTML SVG Reference sql error Google Maps Reference CSS CSS Reference CSS Selector Reference W3.CSS Reference Bootstrap Reference Icon Reference JavaScript JavaScript Reference HTML DOM Reference jQuery Reference jQuery Mobile Reference AngularJS Reference XML XML Reference XML Http Reference XSLT Reference XML Schema Reference Charsets HTML Character Sets HTML ASCII HTML ANSI HTML Windows-1252 HTML ISO-8859-1 HTML Symbols HTML UTF-8 Server Side PHP javascript sql error Reference SQL Reference ASP Reference × HTML/CSS HTML Examples CSS Examples W3.CSS Examples Bootstrap Examples JavaScript JavaScript Examples HTML DOM Examples jQuery Examples jQuery Mobile Examples AngularJS Examples AJAX Examples XML XML Examples XSLT Examples XPath Examples XML Schema Examples SVG Examples Server Side PHP Examples ASP Examples Quizzes HTML Quiz CSS Quiz JavaScript Quiz Bootstrap Quiz jQuery Quiz PHP Quiz SQL Quiz XML Quiz × PHP Tutorial PHP HOME PHP Intro PHP Install PHP Syntax PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP While Loops PHP For Loops PHP Functions PHP Arrays PHP Sorting Arrays PHP Superglobals PHP Forms PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete PHP Advanced PHP Arrays Multi PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Error Handling PHP Exception MySQL Database MySQL Database MySQL Connect MySQL C
2010 by Remy Sharp. Tweet Please beware that as of 18th November the W3C is no longer actively working on the Web SQL Database specification. The Web SQL database API isn't actually part of the HTML5 specification, but it is part of the suite of specifications that allows us developers to build fully fledged web applications, so it's about time we dig in and check it out. What's in the box? If you haven't guessed from the overly verbose specification title, Web SQL Databases is a spec that brings SQL to the client side. If you have a back-end developer's background, then you'll probably be familiar with SQL and happy as a pig in muck. If not, you might want to learn some SQL before you start hacking around, Google's your friend here. The specification is based around SQLite (3.1.19), but having come from MySQL myself, it's all pretty much the same (sorry for the sweeping statement!). For an example of Web SQL Databases working, have a look at the Twitter HTML5 chatter demo I put together. order levitra It uses SQL and the WHERE clause to narrow down the recent chat about HTML5 on Twitter (it will work in Safari, Chrome and Opera 10.50). There are three core methods in the spec that I'm going to cover in this article: openDatabase transaction executeSql Support is a little patchy at the moment. Only Webkit (Safari, SafariMobile and Chrome) and Opera 10.50 (ATOW alpha on Mac) support web databases. Fellow Doctor Bruce Lawson has told me that Firefox are holding off as they feel there's a better implementation than SQLite (though I hope it's similar, whatever they pick). Either way, I'd definitely recommend checking out the SQLite documentation for the functions that are available. Because of this patchy support and the simple fact that Webkit had implemented the database