Hide/Show fields based on condition(This should work for lookup & Picklist)

 

Hide/Show fields based on condition(This should work for lookup & Picklist) :

 

//This should be implemented on form onload event

function DisableTitle() {

    //Here new_journalnumber is the lookup field name

    var varTitle =Xrm.Page.data.entity.attributes.get('new_journalnumber').getValue();

    if ( varTitle != null) {

        crmForm.all.title.disabled = true;

        crmForm.all.new_journalnumber.disabled = true;

        crmForm.all.new_documenttype.disabled = true;

        crmForm.all.casetypecode.disabled = true;

        crmForm.all.casetypecode.disabled = true;

    }

}