Question

我的网页上有三个不同的复选框列表。我想要一个显示“全选”的复选框，当选中该复选框时，将选中所有三个复选框列表复选框。我正在看这个例子，通过单击选择按钮来检查一个复选框列表，但我希望在javascript中检查所有三个复选框列表复选框。以下是我的代码

 <asp:CheckBox ID="chkCheckAll" runat="server" Text="Check/Uncheck All"  
                                        Style="font-weight: 700"      CausesValidation="false" oncheckedchanged="chkCheckAll_CheckedChanged" AutoPostBack="true" 
                                          />

   <asp:CheckBoxList ID="chkList_MetricsSeverity" runat="server"   RepeatDirection="Horizontal"
                                                RepeatColumns="3" Width="1060px">
                                            </asp:CheckBoxList>

 <asp:CheckBoxList ID="chkList_MetricsAvgMedian" runat="server" RepeatDirection="Horizontal"
                                                RepeatColumns="3" Width="1060px">
                                            </asp:CheckBoxList>

 <asp:CheckBoxList ID="chkList_Counts" runat="server" RepeatDirection="Horizontal"
                                                RepeatColumns="3" Width="1060px">
                                            </asp:CheckBoxList>

任何帮助将不胜感激

Answer 1

看看here ...你可以找到以asp.net和javascript方式实现上述内容的方法......

Answer 2

这是需要做的。下面是代码

  function CheckAll() {


        var chkbx = document.getElementById('<%=chkCheckAll.ClientID %>');

        var chkbxList1 = document.getElementById('<%=chkList_MetricsSeverity.ClientID %>');

        var chkbxList2 = document.getElementById('<%=chkList_MetricsAvgMedian.ClientID %>');

        var chkbxList3 = document.getElementById('<%=chkList_Counts.ClientID %>');
        if (chkbx.checked == true) {
            var chkbxListCount = chkbxList1.getElementsByTagName('input');
            for (var i = 0; i < chkbxListCount.length; i++) {
                chkbxListCount[i].checked = true;
            }
            var chkbxListCount = chkbxList2.getElementsByTagName('input');
            for (var i = 0; i < chkbxListCount.length; i++) {
                chkbxListCount[i].checked = true;
            }
            var chkbxListCount = chkbxList3.getElementsByTagName('input');
            for (var i = 0; i < chkbxListCount.length; i++) {
                chkbxListCount[i].checked = true;
            }
        }
        else {
            var chkbxListCount = chkbxList1.getElementsByTagName('input');
            for (var i = 0; i < chkbxListCount.length; i++) {
                chkbxListCount[i].checked = false;
            }
            var chkbxListCount = chkbxList2.getElementsByTagName('input');
            for (var i = 0; i < chkbxListCount.length; i++) {
                chkbxListCount[i].checked = false;
            }
            var chkbxListCount = chkbxList3.getElementsByTagName('input');
            for (var i = 0; i < chkbxListCount.length; i++) {
                chkbxListCount[i].checked = false;
            }
        } 




    }

只需单击一个按钮即可检查多个复选框列表

2 个答案: