I have been engaged in .net development for a year and a half, and encountered a very difficult problem (how to cancel t

bastard

It doesn't make much sense.

yoto999

Thank you in advance forsunray's answer.
But what I need is the implementation in javascript.
PS: Maybe you haven't met this demand yet, so it doesn't make much sense. My job now is to implement this kind of function: choose one or none. (Some may be wrongly selected and need to be cancelled).

gallup

It would be better to make a multi-option and then implement the logic of choosing only one.

yoto999

togallup:
   The main reason is that I didn't realize that I could not choose at the beginning (think it was a single choice). If you modify it, you need to change many places, which is very troublesome. (And my radiobuttonlist is placed in datagrid)

xxxlin

Be a drop-down box

gallup

<script>
        var r1 = false;
        function test1 ()
        {
        var list = document.getElementsByName ("test");
        if (r1) document.getElementById ("Radio1"). checked = false;
        r1 = document.getElementById ("Radio1"). checked;
        
        alert (r1);
        }
</ script>
<input type = radio id = radio1 />
It feels like a global variable is needed to store the selected value.

yoto999

Is there no way to achieve it? ? 555 ~~~~~~~~~~

ffxixi

<input type = "reset" value = "overwrite all" name = "B2">
But this way all your input work is gone

chocoam

Finally, add a Radiobutton title: None of the above.

papaibobo

OK, I tried