Refresh a CRM from / Page

//call onChnage of Modified On field

function RefreshForm()

{

 try{

setTimeout(function () { 

    // Call the Open Entity Form method and pass through the current entity name and ID to force CRM to reload the record

Xrm.Utility.openEntityForm(Xrm.Page.data.entity.getEntityName(), Xrm.Page.data.entity.getId()); 

}, 1000);   //replace 1000 as per ur chioce 1000 for 1sec, 2000 for 2sc etc etc 

  }

  catch(err)

   {

alert(err.message);

   }

}