jQuery validation - Textbox requires data if checkbox is checked -

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i have checkbox - hasraffle require textbox - raffleitem contain data if hasraffle checked. how this? i've never done own jquery validations before. attempted, it's not working @ all. close?

$("#donationeventform").validate({     rules: {         raffleitem: {             required: function () {                 if ($("#hasraffle").is(":checked")) {                     if ($("#raffleitem").val === '') {                         return true;                     } else {                         return false;                     }                 } else {                     return false;                 }             },             messages: {                 required: "this test!!"             }         }     } });

edit: here's view

 @using (html.beginform("create", "donationevent", formmethod.post, new {id = "donationeventform"})) {     @html.antiforgerytoken()     @html.validationsummary(false)      <div class="form-field">         @html.labelfor(model => model.charity)         @html.textboxfor(model => model.charity)         @html.validationmessagefor(model => model.charity)     </div>      <div class="form-field">         @html.labelfor(model => model.startdate)         @html.textboxfor(model => model.startdate, new {@class = "datepicker"})         @html.validationmessagefor(model => model.startdate)     </div>      <div class="form-field">         @html.labelfor(model => model.enddate)         @html.textboxfor(m => m.enddate, new {@class = "datepicker"})         @html.validationmessagefor(model => model.enddate)     </div>      <div class="form-field">         @html.label("raffle?")         @html.checkbox("hasraffle", true)     </div>      <div class="form-field">         @html.labelfor(model => model.raffleitem)         @html.textboxfor(model => model.raffleitem)         @html.validationmessagefor(model => model.raffleitem)     </div>      @html.textboxfor(model => model.glcode, new {@type = "hidden"})     @html.textboxfor(model => model.transactiondescription, new {@type = "hidden"})     @html.textboxfor(model => model.createdby, new {@type = "hidden"})      <div class="form-field-buttons">         <input type="submit" value="create" />         <input type="button" value="cancel" onclick="location.href='../home/index'"/>     </div>  }

you need add custom rule addmethod

jquery.validator.addmethod('checkraffle', function(value, element){     if ($("#hasraffle").is(":checked")) {         if (value === '') {             return false;         } else {             return true;         }     } else {         return true;     } }, 'please write something')

then rule : 

rules: {     'raffleitem': {         'checkraffle' : true     } }

this code not tested (and probly not work becuase cant see dom), if can see logic behind code can debug your!


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