验证在4之间至少选中一个复选框 [英] Validate that at least one check box is checked between 4

问题描述

我在网页上有4个复选框，我希望客户端验证在提交表单之前至少应该检查一个复选框。



所以，我已经编写了以下代码来验证单个复选框。

< asp：CheckBox ID =   CheckBoxTermsandCondition runat =  服务器字体名称=   Calibri字体大小=  小 ForeColor =   Black />我同意条款和条件
< asp：CustomValidator ID =   CustomValidator1 runat =   server ErrorMessage =  您必须同意我们的条款和条件 ClientValidationFunction =   ValidateCheckBox  >  < /   asp：CustomValidator  > < br /> < /   div  >  

< script type =   text / javascript> 
  function  ValidateCheckBox（sender，args）{
  if （ document  .getElementById（ <％= CheckBoxTermsandCondition.ClientID％> ）。checked ==  true ）{
 args.IsValid =  true ; 
}  else  {
 args.IsValid =  false ; 
} 
} 
< / script> 
 

解决方案

参考： JavaScript的验证码到化妆确保-该-AT-至少酮复选框-被标记 [ ^ ]

试试这个jquery：

  var  checked =  0 ; 

（< span class =code-string> input [type = checkbox]）。live（ 点击， function （）{
如果（

I have 4 check boxes on the web page, i want client side validation that ate least one check box should be check before submitting the form.

So, Far i have write the following code to validate a single check box.

   <asp:CheckBox ID="CheckBoxTermsandCondition" runat="server" Font-Names="Calibri" Font-Size="Small" ForeColor="Black" />  I Agree with Terms and Condition
<asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="You Must Agree Upon our terms and condition" ClientValidationFunction = "ValidateCheckBox"></asp:CustomValidator><br /></div>

<script type = "text/javascript">
      function ValidateCheckBox(sender, args) {
          if (document.getElementById("<%=CheckBoxTermsandCondition.ClientID %>").checked == true) {
              args.IsValid = true;
          } else {
              args.IsValid = false;
          }
      }
  </script>

解决方案

Refer: javascript-validation-code-to-make-sure-that-at-least-one-checkbox-is-marked[^]

Try this jquery :

var checked = 0;

("input[type=checkbox]").live("click", function() { if(

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