How can I make my Landing Page capture specific individual parameter values from a URL query string and insert them into MULTIPLE corresponding hidden Form fields?

To capture specific individual parameter values from the URL query string and insert into multiple corresponding hidden fields:

1. Make sure you have created the custom fields that you would like to use as HIDDEN form fields to receive the query string data.
    
2. To pull out individual parameter values, use the guppy() function:
   

   function guppy(name) {
   return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search)||[,""])[1].replace(/\+/g, '%20'))||null;
   }

    
3. To get parameter values, just pass in the parameter name.
   

   var paramvalue = guppy('PARAM_NAME');

4. You can set values of a hidden input like so:

   document.getElementById('UDF_ID').value = guppy('PARAM_NAME');

   
   ...where UDF_ID is the ID of the UDF to populate with data and “PARAM_NAME” is the name of the parameter you want a value for, for each UDF/parameter pair.
    
5. Complete code will look similar to this:
   
   Hidden fields in form:

   <input name="x_udf_leadsource79" id="x_udf_leadsource79" type="hidden" />
   <input name="x_udf_utmsource80" id="x_udf_utmsource80" type="hidden" />
   <input name="x_udf_utmmedium81" id="x_udf_utmmedium81" type="hidden" />
   <input name="x_udf_utmcampaign82" id="x_udf_utmcampaign82" type="hidden" /> 

   
   Script at end of page that populates fields with query string data:
   

   <script type="text/javascript">
    function guppy(name) {
    return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search)||[,""])[1].replace(/\+/g, '%20'))||null;
   }
   document.getElementById('x_udf_leadsource79').value = window.location.href.substr(window.location.href.indexOf('?') + 1);
   document.getElementById('x_udf_utmsource80').value = guppy('utm_source');
   document.getElementById('x_udf_utmmedium81').value = guppy('utm_medium');
   document.getElementById('x_udf_utmcampaign82').value = guppy('utm_campaign');
   </script>

    

6. Data in eTrigue record will look like this:
   
    
   
   
   

To learn how to capture an entire URL query string and insert it into a SINGLE hidden field in a form, click here.