Set default value for People Picker via JavaScript

First open entry form (NewForm.aspx / EditForm.aspx / DispForm.aspx) in advanced mode in sharepoint designer. Then search for tag :


<asp:Content ContentPlaceHolderId="PlaceHolderAdditionalPageHead" runat="server">


Now copy & paste this JavaScript code after this tag :


<script type="text/ecmascript">
 //Function search for people picker by its no and set default value string type
 //If we have 2 people picker in entry form & we want to set value to 2nd no. then "pickerNo=2"
 function fillPeoplePickerWithCurrentUser(pickerNo,userLoginName )
   {
      if(userLoginName != null)
      {
         var pp = getPickerImputElement(pickerNo);
  
         if(pp != null)
         {
           pp.innerHTML = userLoginName;
         }
      }
   }

  function getPickerImputElement(pickerNo)
  {
    var result = '';
    var divs = document.getElementsByTagName('DIV');
    var j = 0;

     for(var i=0; i < divs.length; i++)
     {
        if(divs[i ].id.indexOf('UserField_upLevelDiv') > 0)
        {
           j++;
           if(j == pickerNo)
           {
            result = divs[i ];
            break;
           }
        }
     }
     return result;
  }
</script>