Question

我有一个aspx页面，其中有三个占位符。现在我在每个占位符中都有复选框。如何在clientside中检索复选框的checked属性。我尝试了以下代码，但它不起作用。

<asp:CheckBox ID="lblIsActive"  runat="server" CssClass="s_label" />

function Mark_Confirm(elem) 
{
    //var chk=document.getElementById("<%=lblIsActive.ClientID%>");
    var div = document.getElementById('<% = lblIsActive.ClientID %>');    
    var chk = div.getElementsByTagName('input');

    var len = chk.length;      

    if (chk.type == 'checkbox')              
        chk.checked = elem.checked;        

    if(chk.checked==true)
    {
        if (confirm("Do you want to mark the device as lost?")) 
        {
            var confirm_value1 = document.createElement("INPUT");
            confirm_value1.type = "hidden";
            confirm_value1.name = "confirm_value1";
            confirm_value1.value = "Yes";
        } 
        else 
        {
            confirm_value1.value = "No";
        }
    }
    if(chk.checked==false)
    {
        if (confirm("Do you want to mark the device as active?")) 
        {
            var confirm_value2 = document.createElement("INPUT");
            confirm_value2.type = "hidden";
            confirm_value2.name = "confirm_value2";
            confirm_value2.value = "Yes";
        } 
        else 
        {
            confirm_value2.value = "No";
        }
    }
    document.forms[0].appendChild(confirm_value1);
    document.forms[0].appendChild(confirm_value2);
}

Answer 1

你可能正在寻找这个。使用“checked”属性

var isChecked =  document.getElementById('<%=lblIsActive.ClientID%>').checked;
alert(isChecked);

或者通过使用jquery，您可以像这样检查属性

var isChecked = $("#<%=lblIsActive.ClientID%>").is(':checked');
alert(isChecked);

Answer 2

您可以使用jQuery实现此目的;

$('.s_label').each(function(){
  var confirm = $(this).is(':checked');
  alert(confirm);
});;

检索Gridview中复选框的checked属性

2 个答案: