Nintex Forms – Reading Query String Values

There’s not much to say about this post.  I had been asked about pulling our Query String values from a Nintex Form.

It’s actually not that hard. The following is a little code that you can put into the Custom Javascript section of the form settings.

NWF$(document).ready(function()
{
  var myVars = getQueryStringsIntoHashtable();
  if(typeof myVars['name'] === 'undefined' || myVars['name'] == null)
  {
    // do something if the query string value is not found
  }
  else
    alert(myVars['name']);
});

function getQueryStringsIntoHashtable()
{
  var vars = [], hash;
  var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
  for(var i = 0; i < hashes.length; i++)
  {
    hash = hashes[i].split('=');
    vars.push(hash[0]);
    vars[hash[0]] = hash[1];
  }
  return vars;
} 

In the above example, I’m looking for a name,value pair where the name equals “name”. If it finds it, it pops up an alert box with the value.

The getQueryStringsIntoHashtable function reads all the parameters from a Query String, splits them up and builds a hashtable (name,value pair).

So if you have a url like http://mycompany.com?x=1&y=2&name=LasVegas, you’ll end up with a hashtable that looks like this :

x = 1

y = 2

name = LasVegas.

To access the values, you use the names.  In my case, the function call result was stored in a variable (myVars).  To access the “name” value, you simply do :

myVars[‘name’];