nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

onItemChange not working

lalita

Hi All

I have a replicant check box item called check_box. By default this is checked. I want if user unchecks this checkbox at any time, so underneath all the child items check boxes should be uncheckd.

I tried many times. dont know where i m wrong.

Please find the attached code.

Lalita

Find more posts tagged with

Comments

TheYann

in your loop

IWDatacapture.getItem("/subsection_headlines["i"]/check_box")

I believe if should be:

IWDatacapture.getItem("/subsection_headlines[" + i + "]/check_box")

I am not sure javascript will know to concataine the strings if you don't put the + operator in there. And Javascript is very sensitive, when there is an error somewhere it will throw an exception. If there is no try - catch block to do something about the exception, the whole javascript bit will stop working right then and there!

Little advice, when working with javascript, always surround your code with a try - catch block, even if the error message is sometimes cryptic at least it can help you find where the problem is.
example:

try {
var item = IWDatacapture.getItem("/subsection_headlines["i"]/check_box");
}
catch (err) {
  alert ("An error occured: " + err + (err.description ? " - " + err.description : "");
}

This will display the error general message plus the description which can help narrow it down.

Hope this helps!

lalita

in your loop
IWDatacapture.getItem("/subsection_headlines["i"]/check_box")
I believe if should be:
IWDatacapture.getItem("/subsection_headlines[" + i + "]/check_box")
I am not sure javascript will know to concataine the strings if you don't put the + operator in there. And Javascript is very sensitive, when there is an error somewhere it will throw an exception. If there is no try - catch block to do something about the exception, the whole javascript bit will stop working right then and there!

Little advice, when working with javascript, always surround your code with a try - catch block, even if the error message is sometimes cryptic at least it can help you find where the problem is.
example:
try {
var item = IWDatacapture.getItem("/subsection_headlines["i"]/check_box");
}
catch (err) {
  alert ("An error occured: " + err + (err.description ? " - " + err.description : "");
}
This will display the error general message plus the description which can help narrow it down.

Hope this helps!

Hi Yann

Now this is my code but not getting any alert.


function setCheckBox()
{
 alert ("This is begining of function.");
 var para = IWDatacapture.getItem("/centre/Main_News/Headlines/subsection_headlines").getChildren();
 alert("getchildren ......"+para);
 for (var i=0; i&ltpara.length; i++)
 {
  var paraItem = IWDatacapture.getItem("/subsection_headlines["i"]/check_box");
  var paraText = paraItem.getValue();
  if(paraText.checked == true)
   {
    alert("if condition......"+paraText);
    paraText.setValue = true;
   }   

  if(!paraText.checked)
   {
    alert("else condition ......"+paraText);
    paras.setValue = false;
   }
 }

 return true;
}

if i try:


function setCheckBox()
{
 alert ("This is begining of function.");
 return true;
}

then only i get this alert message when i click on checkbox.

Please suggest me.

Ambuj

Hi Yann

Now this is my code but not getting any alert.


function setCheckBox()
{
 alert ("This is begining of function.");
 var para = IWDatacapture.getItem("/centre/Main_News/Headlines/subsection_headlines").getChildren();
 alert("getchildren ......"+para);
 for (var i=0; i&ltpara.length; i++)
 {
  var paraItem = IWDatacapture.getItem("/subsection_headlines["i"]/check_box");
  var paraText = paraItem.getValue();
  if(paraText.checked == true)
   {
    alert("if condition......"+paraText);
    paraText.setValue = true;
   }   

  if(!paraText.checked)
   {
    alert("else condition ......"+paraText);
    paras.setValue = false;
   }
 }

 return true;
}

if i try:


function setCheckBox()
{
 alert ("This is begining of function.");
 return true;
}

then only i get this alert message when i click on checkbox.

Please suggest me.

Are you using multiple / multi-level containers?

Can you please post your DCT code also?

lalita

Are you using multiple / multi-level containers?

Can you please post your DCT code also?

yes i m using multiple containers.
Please find attached code.

Ambuj

yes i m using multiple containers.
Please find attached code.

In that case the parameters to getItem will be different. It would be something like "/centre[1]/Main_News[1]/Headlines[1]/subsection_headlines"

Please read FormAPI Developer's Guide for more detailed information.

TheYann

you still have a bit of a problem, the reason you don't get any alerts is because you still have the same syntax error

var paraItem = IWDatacapture.getItem("/subsection_headlines["i"]/check_box");

should be something like

var paraItem = IWDatacapture.getItem("/subsection_headlines[" + i + "]/check_box");

but even so, it won't work, your paraItem should be retrieved like so (I think):

var paraItem = para;

IWDatacapture.getItem() works with a name starting from the root node.
Keep in mind each IWItem also have a getChildByName() function which can also be helpful.

lalita

you still have a bit of a problem, the reason you don't get any alerts is because you still have the same syntax error
var paraItem = IWDatacapture.getItem("/subsection_headlines["i"]/check_box");
should be something like
var paraItem = IWDatacapture.getItem("/subsection_headlines[" + i + "]/check_box");
but even so, it won't work, your paraItem should be retrieved like so (I think):
var paraItem = para;
IWDatacapture.getItem() works with a name starting from the root node.
Keep in mind each IWItem also have a getChildByName() function which can also be helpful.

I have changed my code
to

para

now paraItem alert returns cb item NaN
i want to retrieve check Box item and its value.

Please help me.


function setCheckBox()
{
 alert ("This is begining of function.");
 var para = IWDatacapture.getItem("/centre/Main_News/Headlines[1]/subsection_headlines").getChildren();
 alert ("child items...."+para);
 var para1 = para.length;
 for (var i=0; i&ltpara1; i++)
 {
  alert ("length...."+para1);
  var paraItem = para/"check_box";
  alert("cb item "+paraItem);
  var paraVal = paraItem.getOptions()[paraItem.getValue()].value;
  alert("label...."+cbval);
  if(paraVal.checked == true)
   {
    alert("if condition......"+paraVal);
    break;
   }   

  if(!paraVal.checked)
   {
    alert("else condition ......"+paraVal);
    paraVal.setValue = false;
   }
 }

 return true;
}

waikong

your code:

var para = IWDatacapture.getItem("/centre/Main_News/Headlines[1]/subsection_headlines").getChildren();

try this:

var para = IWDatacapture.getItem("/centre/Main_News/Headlines")[1].getItem("subsection_headlines").getChildren();

lalita

your code:

var para = IWDatacapture.getItem("/centre/Main_News/Headlines[1]/subsection_headlines").getChildren();

try this:

var para = IWDatacapture.getItem("/centre/Main_News/Headlines")[1].getItem("subsection_headlines").getChildren();

if use this even not getting the second alert ("child items...."+para);

lalita

I tried

var paraVal = paraItem.getOptions()[paraItem.getValue()].value;

and

var paraVal = paraItem.getValue();

to retrieve the value of checkbox, but still not getting. As i have a single option in my checkbox item.
getOptions() returns array of option, so is that the reason i m not getting value ? How i retrieve checkbox value ?

waikong

to retrieve the value of checkbox, but still not getting. As i have a single option in my checkbox item.
getOptions() returns array of option, so is that the reason i m not getting value ? How i retrieve checkbox value ?

I have the similar setting on my DCT. Because the checkbox is either check or uncheck, in other work, true or false. So here is how I compare their value:

if (paraItem.getValue() != 0) {
 // checkbox is checked
} else {
 // checkbox is uncheck
}

lalita

Thanks for reply waikong but no success

Adam Stoller

Thanks for reply waikong but no success

Perhaps it's:

...
  var paraItem = para/"check_box";
...

- which appears to be a mathematical equation for dividing the value of para[i] by the string "check_box" - when you probably meant to do something like:

...
  var paraItem = IWDatacapture.getItem(para.getName() + "/check_box");
...

though that's just a guess on my part - I didn't bother reading the entire code thoroughly.

salim_ali

So what is the value of uncheck box.?

I tried this code at my box and checkbox is returning '0' value and uncheck box is returning blank.

I have the similar setting on my DCT. Because the checkbox is either check or uncheck, in other work, true or false. So here is how I compare their value:
if (paraItem.getValue() != 0) {
 // checkbox is checked
} else {
 // checkbox is uncheck
}

lalita

Thanks Adam, now getting alerts.
i need to set checkbox value. trying to get i value its "0".


if(paraItem.getValue() != null)
 {
 alert ("i value "+i);
 for (k=0; k<=para1; k++ )
    {
       var chItem = IWDatacapture.getItem(para.getName() + "/check_box");
                 chItem.setValue([1]);
    }
 }   
 else
 {
     alert ("checkbox is check");
 }

need a value for the uncheck box so that i can set that value for all the uncheck boxes.
i am able to unselect underneath checkbox but upper one also get unselected.

Adam Stoller

Thanks Adam, now getting alerts.
i need to set checkbox value. trying to get i value its "0".
    if(paraItem.getValue() != null) {
 alert ("i value "+i);
 for (k=0; k<=para1; k++ ) {
       var chItem = IWDatacapture.getItem(para.getName() + "/check_box");
                 chItem.setValue([1]);
    }
 }   
 else {
     alert ("checkbox is check");
 }
need a value for the uncheck box so that i can set that value for all the uncheck boxes.
i am able to unselect underneath checkbox but upper one also get unselected.

I believe that you are not guaranteed a value for something that is not-checked - instead you should verify that it is checked, and use an else clause for handling the situation where it isn't.