Just a small function that simplifies making boolean search queries.

getQuery.js

// Input syntax: [["quadcopter", "quadrotor", "quadrotor helicopter"], ["motion", "dynamics"], ["control", "feedback"]]
// Output value: "(quadcopter OR quadrotor OR quadrotor helicopter) AND (motion OR dynamics) AND (control OR feedback)"

function getQuery(input_vals) {
  var a = [];
  var return_val = "";

  for (var i = 0; i < input_vals.length; i++) {
    var temp_or = "(";

    for(var j = 0; j < input_vals[i].length; j++) {
      switch(j) {
        case 0:
          temp_or = temp_or + input_vals[i][j] + " OR";
          break;
        case input_vals[i].length - 1:
          temp_or = temp_or + " " + input_vals[i][j] + ")";
          break;
        default:
          temp_or = temp_or + " " + input_vals[i][j] + " OR";
          break;
      }
    }
    a.push(temp_or);
  }

  for(var i = 0; i < a.length; i++) {
    switch(i) {
      case 0:
        return_val = return_val + a[i] + " AND";
        break;
      case a.length - 1:
        return_val = return_val + " " + a[i];
        break;
      default:
        return_val = return_val + " " + a[i] + " AND";
        break;
    }
  }

  return return_val;
}