Getting property value is undefined or null error for JavaScript call in Dynamics CRM 2011

Question

Just started with Javasript + Dynamics 2011 today and got stuck at the beginning itself. I've been trying simple steps as follow 1. Change the value on radio button 2. Call a function from Javascript, which will set two field enabled and disabled

Code is as follows

function navenabled()
{

    var navdata = Xrm.Page.getAttribute("new_currentnavclient").getValue;

    if (navdata == true)
    {
        Xrm.Page.getControl(“new_noofusers”).setDisabled(true);
        Xrm.Page.getControl(“new_navversion”).setDisabled(true);
    }
    else
    {
        Xrm.Page.getControl(“new_noofusers”).setDisabled(false);
                Xrm.Page.getControl(“new_navversion”).setDisabled(false);
    }

}

I'm getting the following error, when changing the value on 'Current Nav Client' field

enter image description here

Also see the steps that I have performed for JavaScript call

enter image description here

Can someone please tell where I'm doing wrong.

Guido Preite · Accepted Answer · 2013-07-23 06:48:52Z

3

First problem is with this line:

var navdata = Xrm.Page.getAttribute("new_currentnavclient").getValue;

getValue is a method, so the right way is getValue()

var navdata = Xrm.Page.getAttribute("new_currentnavclient").getValue();

The second problem is with all the getControl lines, you are using smart quotes

“ ”

Instead you need to use simple quotation marks, so your code will be:

function navenabled()
{

    var navdata = Xrm.Page.getAttribute("new_currentnavclient").getValue();

    if (navdata == true)
    {
        Xrm.Page.getControl("new_noofusers").setDisabled(true);
        Xrm.Page.getControl("new_navversion").setDisabled(true);
    }
    else
    {
        Xrm.Page.getControl("new_noofusers").setDisabled(false);
        Xrm.Page.getControl("new_navversion").setDisabled(false);
    }

}

answered Jul 23, 2013 at 6:48

Guido Preite

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2 Comments

Indranil Sarkar Over a year ago

Great- thanks! My problem has been solved. But this JavaScript is behaving unexpected and the error information is not valuable. Do you have any idea how to debug the JavaScript code properly on Google chrome.

Guido Preite Over a year ago

you can google for "crm 2011 debug javascript" you will find several guides to debug, mostly with IE

Martin · Accepted Answer · 2013-07-23 20:43:14Z

0

What you can try to do is using the document.getElementById ("fieldname").checked property. This value is allways accurate.

answered Jul 23, 2013 at 20:43

Martin

561 bronze badge

3 Comments

Guido Preite Over a year ago

document.getElementById is an unsupported customization, and for get values and manage controls there are the supported Xrm methods

Martin Over a year ago

Unsupported, what can I say, so be it. A long time ago I followed a course from Microsoft. They worked out a complete example. Turning to the next page it says. Keep in mind that this is unsupported.

Guido Preite Over a year ago

Well, the teacher of the course you followed didn't tell you a more important rule: If there is a supported method to do one thing, use that.

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