Dynamic CRM 365 - Option Set cascading Filtering using Java Script.

function lead_Filter_CustomerType_OnLoad()
{ 
var customerType = Xrm.Page.getAttribute("inf_customertype").getValue();
  if (customerType == 1)
  {
   Xrm.Page.getControl("inf_leadstatus").removeOption(8); // removeOption use for removing option set value at form load 
   Xrm.Page.getControl("inf_leadstatus").removeOption(9);
   Xrm.Page.getControl("inf_leadstatus").removeOption(10);
   Xrm.Page.getControl("inf_leadstatus").removeOption(10);   
  }
else if(customerType == 2)
 {
   Xrm.Page.getControl("inf_leadstatus").removeOption(1);
   Xrm.Page.getControl("inf_leadstatus").removeOption(2);
   Xrm.Page.getControl("inf_leadstatus").removeOption(3);
   Xrm.Page.getControl("inf_leadstatus").removeOption(4);
   Xrm.Page.getControl("inf_leadstatus").removeOption(5);
   Xrm.Page.getControl("inf_leadstatus").removeOption(6);
   Xrm.Page.getControl("inf_leadstatus").removeOption(7); 
  }
}


function lead_Filter_LeadStatusOnLoad()
{
var leadstatus = Xrm.Page.getAttribute("inf_leadstatus").getValue();
if (leadstatus == 8)
{
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(4);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(5);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(6);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(7);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(8);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(9);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(10);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(11);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(12); 
}
else if (leadstatus == 9)
{
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(1);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(2);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(3);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(6);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(7);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(8);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(9);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(10);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(11); 
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(12);
}
if (leadstatus == 10)
{
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(1);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(2);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(3);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(4);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(5);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(11);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(12);
}
if (leadstatus == 11)
{
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(1);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(2);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(3);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(4);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(5);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(6);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(7);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(8);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(9);
   Xrm.Page.getControl("inf_leadsubstatus").removeOption(10);

}
}



function lead_Filter_CustomerType_OnChange()
{
  var customerType = Xrm.Page.getAttribute("inf_customertype").getValue();
 
  var optionSet = Xrm.Page.ui.controls.get("inf_leadstatus");
  var optionSetValues = optionSet.getAttribute().getOptions();  
  optionSet.clearOptions();
  if (customerType == 1)
  {
  optionSetValues.forEach(function (element) {
  //using forEach store all option value in eleement
  if (element.value == "1") 
  optionSet.addOption(element);
  // addoption use for display option set value at form .
  if (element.value == "2")
  optionSet.addOption(element);
 
  if (element.value == "3")
  optionSet.addOption(element);
 
  if (element.value == "4") 
  optionSet.addOption(element);
 
  if (element.value == "5")
  optionSet.addOption(element);
   
  if (element.value == "6")
  optionSet.addOption(element);
   
  if (element.value == "7")
  optionSet.addOption(element);
  });
  }
   else if (customerType == 2)
  {
  optionSetValues.forEach(function (element) {
  if (element.value == "8") 
  optionSet.addOption(element);
 
  if (element.value == "9") 
  optionSet.addOption(element);
 
  if (element.value == "10")
  optionSet.addOption(element);
 
   if (element.value == "11") 
  optionSet.addOption(element);
  });
  }

}


function lead_Filter_LeadStatus_onChange()
{
var leadstatus = Xrm.Page.getAttribute("inf_leadstatus").getValue();
 
  var optionSet = Xrm.Page.ui.controls.get("inf_leadsubstatus");
  var optionSetValues = optionSet.getAttribute().getOptions();  
  optionSet.clearOptions();
  if (leadstatus == 8)
  {
  optionSetValues.forEach(function (element) {
  if (element.value == "1") 
  optionSet.addOption(element);
 
  if (element.value == "2")
  optionSet.addOption(element);
 
  if (element.value == "3")
  optionSet.addOption(element);  

  });
  }
   else if (leadstatus == 9)
  {
  optionSetValues.forEach(function (element) {
  if (element.value == "4") 
  optionSet.addOption(element);
 
  if (element.value == "5") 
  optionSet.addOption(element);

  });
  }
 
   else if (leadstatus == 10)
  {
  optionSetValues.forEach(function (element) {
  if (element.value == "6") 
  optionSet.addOption(element);
 
  if (element.value == "7") 
  optionSet.addOption(element);
 
  if (element.value == "8")
  optionSet.addOption(element);
 
   if (element.value == "9") 
  optionSet.addOption(element);
 
    if (element.value == "10") 
  optionSet.addOption(element);
  });
  }
 
   else if (leadstatus == 11)
  {
  optionSetValues.forEach(function (element) {
  if (element.value == "8") 
  optionSet.addOption(element);
 
  if (element.value == "11") 
  optionSet.addOption(element);
 
  if (element.value == "12")
  optionSet.addOption(element);
 
  });
  }

}