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We may have seen different examples showing how to change/load the content in child Select Box, depending on the parent Select Box options. Most examples uses database and Ajax to achieve the same, which I think is bit unnecessary. Here’s how we can easily create dynamic dependent select box just using jQuery.
There’s been a lot of buzz lately about Twitter’s Bootstrap framework, many new excellent websites are built upon Bootstrap solid framework. whether your need is a responsive grid system or pre-styled typography, Bootstrap comes in handy, it is very easy to start and well documented. But if you are wondering where to start, look no further, because I am going to create a basic responsive layout using Bootstrap, focusing on some fundamental stuff to get you started quickly.
If you are creating a HTML form, especially Ajax driven form, you might want to disable the submit button while page goes into loading mode, because you don’t want user to resubmit the same content and cause script failure. Why not easily prevent user from resubmitting form just by disabling submit button.
Let’s say you have following radio options for the user, and you need to retrieve the value from selected radio button using jQuery.
This jQuery line below retrieves the value of selected radio box.
But when radio isn’t checked, “undefined” error returns, to deal with undefined value do this :
The complete example :