全选CheckBox

<script type="text/javascript" language="javascript">

function GetAllCheckBox(CheckAll)

{

    var items = document.getElementsByTagName("input");

    for(var i=0;i<items.length;i++)

    {

        if(items[i].type=="checkbox")

        {

            items[i].checked = CheckAll.checked;

        }

    }

}

function checkPingJia()

{

    var dengji = document.getElementById("<%=ddlDengJi.ClientID %>").value;

    if(dengji.length == 0 || dengji == " ")

    {

        alert("请选择您要评价的等级!");

        return false;

    }

    var items = document.getElementsByTagName("input");

    var bool = true;

    for(var i=0;i<items.length;i++)

    {

        if(items[i].type == "checkbox" && items[i].box !="111")

        {

           if(items[i].checked)

           {

                bool = false;

                break;

           }else

           {

                continue;

           }

        }

    }

    if(bool)

    {

        alert("请选择您要评价的员工!");

        return false;

    }

    else

    {

        return true;

    }

}

function CheckAllBox()

{

    var items = document.getElementsByTagName("input");

    var bool = true;

    for(var i=0;i<items.length;i++)

    {

        if(items[i].type == "checkbox" && items[i].box !="111")

        {

           if(items[i].checked)

           {

                continue;

           }else

           {

                bool = false;

                break;

           }

        }

    }

    if(bool)

    {

        document.getElementById("checkAll").checked = bool;

    }

    else

    {

        document.getElementById("checkAll").checked = bool;

    }

}

</script>

全选<inut id="chepckAll" type="checkbox" box="111" onclick="GetAllCheckBox(this)" />

<asp:CheckBox ID="chbSelect" onclick="CheckAllBox()" runat="server" CssClass='<%# Eval("GongHao") %>'/> 

原文地址:https://www.cnblogs.com/zhengguangITelite/p/2351279.html