Published on : 2017-05-10 17:53:54

preventDefault(); }else{ alert( Well Done. BeginInvoke(new MethodInvoker(sexProblem));       }     }       MessageBox validating radiobuttonlist. net Last Updated: Aug 02, 2014 Validation is one of the greatest security features to prevent your website against spam. Thursday, March 12, 2009 5:23 AM Form loads, one of the radio buttons is checked. group1); if (btn == null) alert( No radio button selected ); else alert( Button value + btn + selected ); This code was included into the function called by an onClick event attached to the validate (or submit) button on the form. Then a loop is executed over the referenced RadioButtons and each RadioButton is validated whether it is checked or not. I want to do this using the validating event of the radio button is it possible. up votedown vote Radio buttons are generally used to represent options which are mutually exclusive. For Single radio Button we can do in the following way. Describe Each Button In order for the person filling out the form to understand what each radio button in our group does, we need to provide descriptions for each button.

But when I use the above code,if by mistake I select radio button1 instead of radio button2 it is not possible to check the correct button after clicking on the wrong button. How the code should be modified to do this. A reference to the whole form was passed as a parameter into the function, which uses the form argument to refer to the complete form validating radiobuttonlist. Sincerely,How to validate radio buttons with JavaScript A friend recently asked for a code sample showing JavaScript being used to client-side validate the radio inputs of an HTML form. Here is the code used for the radio button themselves. length > 0) alert( Selected ); else alert( Not selected ); }); Here is live example: https://jsfiddle. The simplest way to do this is to provide a description as text immediately following the button. Checked) { return true; } } return false; } You may still show the messegebox in the caller if you like [Which I think is a good thing separate those concerns]. Checked)) { return false; } else { return true; } Which is close to what you have, but not quite the same thing. All of the radio button groups that you will ever need can be handled using the steps covered above.

You don t check this with && (which is AND ) but with || (which is OR). If I try to add two radio buttons on a form I see that only one of them can be checked (the other is automatically unchecked when I do this). up vote 1 down vote For each pair of radio button you have (or for each set, being it pairs for yes/no questions).
. ); } }); }); Best Regards, TechNet Community Support Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. Checked)) As follows: If it s false that (radio1 is not checked and also radio2 is not checked). Checked); Of course it s an overhead for simple cases as the one with only two RadioButtons, so having a method will allow you to overload it for the simple cases (such as 2 RadioButtons and 3 RadioButtons). Show( Please select your preference );     } You ll need to use the BeginInvoke() hoopla to avoid the nasty focus problems you ll get when MessageBox steals the focus away just as it is changing. EDIT: Only one of the radio buttons inside a container can be checked at a time. length-1; i > -1; i--) {         if (btn[i]. .

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validating radiobuttonlist

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