nikdonovanau
asked on
.Net Checkboxlist select all javascript
Hi experts,
How do I achieve the following.
I have a checkbox list in .net
aspx
<asp:CheckBoxList ID="lstDays" runat="server" Height="185px" onclick="check(this)">
<asp:ListItem Value="0" Selected="True" runat="server">All</asp:Li stItem>
<asp:ListItem Value="1">Monday</asp:List Item>
<asp:ListItem Value="2">Tuesday</asp:Lis tItem>
<asp:ListItem Value="3">Wednesday</asp:L istItem>
<asp:ListItem Value="4">Thursday</asp:Li stItem>
<asp:ListItem Value="5">Friday</asp:List Item>
<asp:ListItem Value="6">Saturday</asp:Li stItem>
<asp:ListItem Value="7">Sunday</asp:List Item>
</asp:CheckBoxList>
I want to be able to select all that will check all the boxes, or if i select one or two days the all box gets unchecked.
What is the right way about coding the javascript.
I tried <script>function check(sel){alert(sel.selec tedIndex);
}</script> to get started but I get undefined
Thanks experts
How do I achieve the following.
I have a checkbox list in .net
aspx
<asp:CheckBoxList ID="lstDays" runat="server" Height="185px" onclick="check(this)">
<asp:ListItem Value="0" Selected="True" runat="server">All</asp:Li
<asp:ListItem Value="1">Monday</asp:List
<asp:ListItem Value="2">Tuesday</asp:Lis
<asp:ListItem Value="3">Wednesday</asp:L
<asp:ListItem Value="4">Thursday</asp:Li
<asp:ListItem Value="5">Friday</asp:List
<asp:ListItem Value="6">Saturday</asp:Li
<asp:ListItem Value="7">Sunday</asp:List
</asp:CheckBoxList>
I want to be able to select all that will check all the boxes, or if i select one or two days the all box gets unchecked.
What is the right way about coding the javascript.
I tried <script>function check(sel){alert(sel.selec
}</script> to get started but I get undefined
Thanks experts
ASKER CERTIFIED SOLUTION
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Try this
<script language="javascript">
function check()
{
debugger
if(event.srcElement.id == "lstDays_0")
{
if(event.srcElement.checked == true)
{
for(var i=0;i<lstDays.rows.length+1;i++)
{
if( document.forms[0].elements[i].type =="checkbox" )
{
if(document.forms[0].elements[i].checked== false)
{
document.forms[0].elements[i].checked =true;
}
}
}
}
else
{
for(var i=0;i<lstDays.rows.length+1;i++)
{
if( document.forms[0].elements[i].type =="checkbox" )
{
if(document.forms[0].elements[i].checked== true)
{
document.forms[0].elements[i].checked =false;
}
}
}
}
}
}
</script>
<asp:CheckBoxList ID="lstDays" runat="server" Height="185px" onclick="check()">
<asp:ListItem Value="0" Selected="True" >All</asp:ListItem>
<asp:ListItem Value="1">Monday</asp:ListItem>
<asp:ListItem Value="2">Tuesday</asp:ListItem>
<asp:ListItem Value="3">Wednesday</asp:ListItem>
<asp:ListItem Value="4">Thursday</asp:ListItem>
<asp:ListItem Value="5">Friday</asp:ListItem>
<asp:ListItem Value="6">Saturday</asp:ListItem>
<asp:ListItem Value="7">Sunday</asp:ListItem>
</asp:CheckBoxList>
your welcome
Try this . Previous one is missing some lines......
<script language="javascript">
function check()
{
if(event.srcElement.id == "lstDays_0")
{
if(event.srcElement.checked == true)
{
for(var i=0;i<lstDays.rows.length+1;i++)
{
if( document.forms[0].elements[i].type =="checkbox" )
{
if(document.forms[0].elements[i].checked== false)
{
document.forms[0].elements[i].checked =true;
}
}
}
}
else
{
for(var i=0;i<lstDays.rows.length+1;i++)
{
if( document.forms[0].elements[i].type =="checkbox" )
{
if(document.forms[0].elements[i].checked== true)
{
document.forms[0].elements[i].checked =false;
}
}
}
}
}
else
{
for(var i=0;i<lstDays.rows.length;i++)
{
if( document.forms[0].elements[i].type =="checkbox" )
{
if(document.forms[0].elements[i+1].checked== false)
{
document.forms[0].elements['lstDays_0'].checked = false;
break;
}
else
{
document.forms[0].elements['lstDays_0'].checked = true;
}
}
}
}
}
</script>
<asp:CheckBoxList ID="lstDays" runat="server" Height="185px" onclick="check()">
<asp:ListItem Value="0" >All</asp:ListItem>
<asp:ListItem Value="1">Monday</asp:ListItem>
<asp:ListItem Value="2">Tuesday</asp:ListItem>
<asp:ListItem Value="3">Wednesday</asp:ListItem>
<asp:ListItem Value="4">Thursday</asp:ListItem>
<asp:ListItem Value="5">Friday</asp:ListItem>
<asp:ListItem Value="6">Saturday</asp:ListItem>
<asp:ListItem Value="7">Sunday</asp:ListItem>
</asp:CheckBoxList>
ASKER
Thanks for the fast response. Worked perfectly