1. $(document).ready(function(){
               $.get('inputQueryExamples.txt',function(data){
                   var queryString = data;
                   var cleanString = "";
                   var db = '';
                   $('#database-list').change(function(){
                      db = $('#database-list').val();
                      console.log(db);
                      //put code in here to select pattern, replace un-needed stuff
                      cleanString = queryString.match("/(^DATABASE:" + db + "\r\n)(^NL.*)/gm");
                     
                      for (i=0; i<cleanString.length; i++){
                       $('#what').append(cleanString[i]+'<br>')
                   }
                   }); // end change
   
   
   
   
   
   
   
   
   
   
   
   
   
   

I can match the pattern just fine without the variable and without using quotation marks, but my array ends up as null when I try to add quotes and the variable.  Here is a sample of text I am reading:

1. QUERY:1
   DATABASE:geoquery
   NL:What are the capitals of the states that border the most populated states?
   SQL:something
   DR:
   root(ROOT-0, What-1)
   cop(What-1, are-2)
   det(capitals-4, the-3)
   nsubj(What-1, capitals-4)
   det(states-7, the-6)
   prep_of(capitals-4, states-7)
   nsubj(border-9, states-7)
   
   
   
   
   
   
   
   
   
   
   

So the idea is to read the list that has several databases, select just the DATABASE and NL  based on user selected db and then clean the string up so I can pass the array which in it's final version will be just he string after NL: to autocomplete. All is fine except I can't seem to insert the db variable into my regex pattern. Any insight would be appreciated. Thanks