I need to populate the value of a text field

 <input type="hidden" name="Other6" value="">
<input type="hidden" name="universal_leadid" value="KFLS00-D254-DD521-GF52-GHT554125" id="leadid_token">

Lead Id value is populated by lead id and every time i try to get the Value to the field Other6 i could,'t

This is what i tried and all result are blank or nothing

$( document ).ready(function() {
$('[name=Other6]').val($('[name=universal_leadid]').val()); 
//alert(universal_leadid);
//console.log($('[name=universal_leadid]'));
//console.log($('[name=universal_leadid]').val());
//console.log($('[name=Other6]').val());
$('#salutation').attr('checked',false); 



//var myValue = $( "#leadid_token" ).val();
//document.getElementById('leadid_token');
 //var x = document.getElementById("leadid_token").value;
 //alert(x); // Showing Empty alert box 


});

The result i want to have is Every value populated on universal_leadid need to go to Other6