Checkboxes from an array

[rupak]

i want to chech thoes chekboxes which are sored in an array,

i.e. there is an array PreviousItems[] = [col1,col2,,col4,,,col7,,,,col11,col12,,]

want to checked thoes checkboxes in the form whoes id are stored in array PreviousItems.

i.e.
[HTML]<input type='checkbox' name='coffee' id='col1' value='Unit' checked />
<input type='checkbox' name='coffee' id='col2' value='Unit' checked />
<input type='checkbox' name='coffee' id='col3' value='Unit' unchecked />
<input type='checkbox' name='coffee' id='col4' value='Unit' checked />
<input type='checkbox' name='coffee' id='col5' value='Unit' unchecked />

[/HTML]Simillarly

[hsriat]

i want to chech thoes chekboxes which are sored in an array,

i.e. there is an array PreviousItems[] = [col1,col2,,col4,,,col7,,,,col11,col12,,]

want to checked thoes checkboxes in the form whoes id are stored in array PreviousItems.

i.e.
<input type='checkbox' name='coffee' id='col1' value='Unit' checked />
<input type='checkbox' name='coffee' id='col2' value='Unit' checked />
<input type='checkbox' name='coffee' id='col3' value='Unit' unchecked />
<input type='checkbox' name='coffee' id='col4' value='Unit' checked />
<input type='checkbox' name='coffee' id='col5' value='Unit' unchecked />

Simillarly

function checkPreviousItems() { //call this where you need
   for (var i=0; i<PreviousItems.length; i++) 
   document.getElementById(PreviousItems[i]).checked = true;
}

[rupak]

Actually i want to store the checkboxes selected on Save button, and on modification of cehckxboxes want to Cancle so the previous set will be checked again, means previous condition will be retrived.

<script language="javascript">
var ids = [];
var preids = [];
var PreviousItems= new Array();
function cancel()
{
for (var i=0; i<arry.length; i++) 
document.tcol.getElementById(PreviousItems[i]).checked = true;
}
 
function show()
{
 
txt="";
btn="";
ids=[];
preids=[];
coffee=document.forms['tcol'].coffee;
for (i=0;i<coffee.length;++ i)
{
 if (coffee[i].checked)
{
txt=txt + coffee[i].id;
btn = 't'+ coffee[i].id;
prebtn = coffee[i].id;
ids[i]=btn;
preids[i]=prebtn;
}
}
PreviousItems = preids;
}
</script>
 
<input type='checkbox' name='coffee' id='col1' value='Unit1' checked />
<input type='checkbox' name='coffee' id='col2' value='Unit2' checked />
<input type='checkbox' name='coffee' id='col3' value='Unit3' checked />
<input type='checkbox' name='coffee' id='col4' value='Unit4' checked />
<input type='checkbox' name='coffee' id='col5' value='Unit5' checked />
<input type='checkbox' name='coffee' id='col6' value='Unit6' checked />
<input type='checkbox' name='coffee' id='col7' value='Unit7' checked />
 
<p><input type='button' onclick='show()' value='Save'> <input type='button' onclick='cancel()' value='Cancel'></p>

[hsriat]

Try the following changes..
line 8: document.getElementById(PreviousItems[i]).checked = true;
line 34 onwards: <input type='checkbox' name='coffee[]' id='col1' value='Unit1' checked />

And I'm sorry I didn't get your algorithm.

[rupak]

Try the following changes..
line 8: document.getElementById(PreviousItems[i]).checked = true;
line 34 onwards: <input type='checkbox' name='coffee[]' id='col1' value='Unit1' checked />

And I'm sorry I didn't get your algorithm.

Actually there are lots of checkboxes which are default checked and then have two buttons
SAVE and CANCEL

Once the user changed the present condition of the checkboxes it need to be stored, thus on SAVE we store the modified condition in an array.

Else if user modified the present condition wrongly and then want to keep the previous one he need to CANCEL it. And then do the correct modification and SAVE them.

According to the SAVED value we have to print the checkboxes Value

[hsriat]

var txt;
var ids[];
var PreviousItems= new Array();
function cancel() {
    for (var i=0; i<PreviousItems.length; i++) 
    document.getElementById(PreviousItems[i]).checked = true;
}
 
function show() {
    txt="";
    ids = [];
    coffee=document.tcol.coffee; //are you sure its forms['tcol'] and not tcol?
    for (var i=0;i<coffee.length;++ i) {
        if (coffee[i].checked) {
            txt += coffee[i].id; //is this really needed?
            var temp =  ids.push('t'+ coffee[i].id);
            temp = PreviousItems.push(coffee[i].id);
        }
    }
}

Also change the names of checkboxes from coffee to coffee[ ]

[rupak]

Thanks it has worked out.

[hsriat]

Thanks it has worked out.

Good to hear that. :)

Post again in case of any other problem.