The project is hosted on Git Hub, and the annotated source code is available, as well as an online test suite, an example application, a list of tutorials and a long list of real-world projects that use Backbone.
Backbone is available for use under the MIT software license.
Importantance of returning false It's very important to use the return false statement after the condition block that return false so if validation determines that the business requirements are not met then the form cannot be submitted.
HTML Tag Reference HTML Event Reference HTML Color Reference HTML Attribute Reference HTML Canvas Reference HTML SVG Reference Google Maps Reference CSS Reference CSS Selector Reference W3.
Different browsers can give you different messages for the same error, so there are several different examples where applicable.
Java Script was first known as Live Script, but Netscape changed its name to Java Script, possibly because of the excitement being generated by Java.
Java Script made its first appearance in Netscape 2.0 in 1995 with the name Live Script.
A typical error from Chrome looks like this: Other webkit-based browsers, like Safari, give errors in a similar format to Chrome.
Errors from Firefox are similar, but do not always include the first part, and recent versions of Internet Explorer also give simpler errors than Chrome – but in this case, simpler does not always mean better. Related errors: number is not a function, object is not a function, string is not a function, Unhandled Error: ‘foo’ is not a function, Function Expected Occurs when attempting to call a value like a function, where the value is not a function.