Read In JSON From File And Eval

You need to have this file next to the script file.

        /*
        author: @fabiantheblind
        This script shows how to read in a file and evaluate the
        JSON STring from in there
        It needs the JSONString.json file to be next to the script
        !Achtung! eval is evil! Improper use of eval opens up your    
        code for injection attacks
        http://stackoverflow.com/a/86580
        */
    
    var script_file = File($.fileName); // get the location of the    scriptfile
    
    var script_file_path = script_file.path; // get the path
    
    // var file_to_read = File(script_file_path + "/testfile.txt");// this could be reading a textfile
    var file_to_read = File(script_file_path + "/JSONString.json");// but we want JSON
    var my_JSON_object = null; // create an empty variable
    //  alert(file_to_read); // This could be interesting
    var content; // this will hold the String content from the file
    if(file_to_read != false){// if it is really there
          file_to_read.open('r'); // open it
          content = file_to_read.read(); // read it
          // !Achtung! eval is evil 
          // Improper use of eval opens up your code for injection attacks
          // http://stackoverflow.com/a/86580
          my_JSON_object =  eval("{"+ content + "}");// now evaluate the string from the file
          
          alert(my_JSON_object.length); // if it all went fine we have now a JSON Object insted of a string call length
          file_to_read.close(); // always close files after reading
          }else{
          alert("Bah!"); // if something went wrong
    }