用Jquery取消选中单选按钮

Question

I have several RadioButtonFor (razor) and I am trying to make a JQuery script that unchecks others buttons when you check another one.

I have a model with an array of booleans to pass to the Html Helper and printer names:

public class Mymodel
{    
    public List<PrinterModel> printers { get; set; }
    public bool noDefault { get; set; }
}

My PrinterModel is as follows :

public class Printermodel
{
    public bool selected { get; set; }
    public string printerName { get; set; }
}

Which then gives in my view, :

@using (Html.BeginForm()
{
<div class="form-group">
    for (var i = 0; i < Model.printers.Count(); i++)
    {
        @Html.RadioButtonFor(m => m.printers[i].selected, new { @class = "default" });
        @Html.Label(Model.printers[i].printerName);
        <br/>
    }
    @Html.RadioButtonFor(m=>m.noDefaultRadio, new { @class = "noDefault", @checked= "checked" });
    @Html.Label("No default printer");
</div>
}

I know I can use .prop('checked', false) in JQuery to uncheck a radiobox, so I tried in the first play to uncheck the default button :

$('.default').change(function () {
    if ($('.default:checked').length > 0) {
        $('.noDefault').prop('checked', false);
    }
    else {
        $('.noDefault').prop('checked', true);
    }
});

This does nothing, but works for checkboxes, why?

Also , the @checked="checked" doesn't make the RadioButtonFor checked by default, and I've also tried @checked = true which doesn't work either.

Any ideas?

EDIT When trying to use name="default" as suggested, I see the following input when inscpecting the page in my navigator :

<input data-val="true" id="printers_0__primarySelected" name="printers[0].primarySelected" type="radio" value="{ disabled = disabled }"

Answer 1

Can you just make the radio buttons part of a group? What you are trying to do sounds like default behavior.

Can you add the name = "printerGroup" (or similar) to your HTML attributes in the RadioButtonFor calls to group these together?

UPDATE:

Stepping back, sounds like you want 1 radio button to be selected. You should be looking to have a selectedId or some identifier passed back to your controller once you submit. I would look to make the following changes.

Model

public class PrinterModel   
    {
        public int Id { get; set; }
        public string printerName { get; set; }
    }

public class MyModel
    {
        public List<PrinterModel> printers { get; set; } = new List<PrinterModel>();
        public string selectedId { get; set; } //This will be the id of what gets selected
    }

View

@using (Html.BeginForm())
{
    <div class="form-group">
        @for (var i = 0; i < Model.printers.Count; i++)
        {
            @Html.RadioButtonFor(m => Model.selectedId, Model.printers[i].Id, new { name = "test" });
            @Html.Label(Model.printers[i].printerName);
            <br />
        }
        @Html.RadioButtonFor(m => Model.selectedId, "0", new { name = "test" })
        @Html.Label("No default printer")
    </div>
}

Inside your controller you can get the selectedId and do something with it, if 0 was passed in that would be the default (change as needed).

Answer 2

Use click instead of change event because once radio is checked change event won't trigger again.

 $('.default').click(function () { if ($('.default:checked').length > 0) { $('.noDefault').prop('checked', false); } else { $('.noDefault').prop('checked', false); } }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> Check .default <input type="radio" name="one" class="default" /> <br/> Check .noDefault <input type="radio" name="two" class="noDefault" checked /> <br/>