JavaScript - Global Variables In Javascript

I've been fooling around with developing an IETMs interface (Interactive Electronic Technical Manual - like an interactive parts catalogue) to display the data live from an existing Access database. The idea is to be able to run this interface on a network hosted intranet with straight HTML, plain Javascript, VBScript & ActiveX objects, so that it doesn't require IIS etc to run ASP or PHP etc (I don't want to involve corporate IT for the IIS).

All is going pretty well, & I'm impressed with the setup except for a few minor things - checking if a frame is loaded, & global variables.

My setup is a HTML page hosting 5 frames with each containing an empty <DIV> (which gets the page written to it dynamically), but I need to ensure all frames are loaded before getting into the heavy stuff (which Javascript is handling brilliantly!). But I'm finding that Javascript sux at truly detecting if a frame is loaded (someone please prove me wrong!). I have all 5 frames call a function fnInitialiseIfReady(), then if I could either successfully test if all frames are loaded, or if I could globally count if this function has been called 5 times, I can proceed with confidence & call my function fnInitialise(). But unfortunately neither is working for me.

From tireless internet searches, I've tried the 'frames always load in order' theory, & that is simply not correct. I have set up a test with the frames calling a function passing their name as a parameter, & each time the frames load in a different order every time. It is totally random. Note: I proved this by having the first 4 frames call a certain function(which contains an alert() line showing the frame name parameter passed), & having the last frame call a different function (which contains an alert("all are loaded!") line). The "all are loaded!" does not always appear last.

I've also tried the '.frames["FrameName"].document.loaded' approach, & it ALWAYS returns 'undefined' for every frame. Am I doing something wrong here?

I've also tried the '.frames["FrameName"].window.location.href' approach & it ALWAYS returns the html filename regardless of whether that page has loaded or not, so it is not an indicator of loading completion.

I've also tried the '.frames["FrameName"].document.location' approach & it's ALWAYS the same as the '.window.location.href' approach.

Also, I'm finding Javascript will not hold global variables for me at all. I don't know if it's a combination of multiple frames & using Javascript & VBScript together, but global variables just do not hold a value at all. Local variables (within functions) are fine. Any ideas? I don't have many globals, so I'm thinking of using a cookie. A valid Solution?

BTW, the reason for also using VBScript is that it accesses the ActiveX controls by default, & being a corporate intranet app I can guarantee MSIE usage.

It's frustrating because if I can solve these 2 relatively minor issues, then I'm super impressed with the robustness of this Javascript/VBScript approach. By leveraging each of their strengths, it's crunching the data just as quickly as the VB, C#, & C++ programs I've written for this particular dataset. I'm impressed!

Thanks in advance,

Dave Lock.

Ok i'm really new at this so i apologize beforehand if i ask a stupid question or anything.

I'm working on a project that displays a GUI asking for a name as well as grades.
when you enter them all it runs the grades through a formula and opens another frame with the results. I don't need any help building the GUI what i need help on is I cannot for the life of me find out how to access the variable from another frame. Everything i've seen online tells me to set the variable outside the class but i need to run the formula inside because the grades come from the user.

Sorry if my code is messy, like i said i'm very new at this

Code:

// Loads all neccesary plugins
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class SInfo extends JPanel

{

//  Setting all text fields, labels and button
	public JButton submitInfo;
	
	public JLabel SNamel, Asign, Asignl, Asign1l, Asign2l, Asign3l, Asign4l, Asign5l, Asign6l, 
	Asign7l, Asign8l, Asign9l, Asign10l, Folderl, Projectl, Project1l, Project2l, Project3l, 
	Project4l, GProjectl, blank, blank1, Sname, AsgnAvg, ProjectAvg, TotalAvg;
	
	public JTextField SName, Asign1, Asign2, Asign3, Asign4, Asign5, Asign6, 
	Asign7, Asign8, Asign9, Asign10, Folder, Project1, Project2, Project3, 
	Project4, GProject;
	
	double a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, 
	p1, p2, p3, p4, gp, fldr, asgnAvg, projectAvg, totalAvg;
	
	public SInfo()
	{
	
		
		setLayout (new GridLayout (20,2));
		// Sets the text for the labels
		{
		blank = new JLabel ("");
		blank1 = new JLabel ("");
		SNamel = new JLabel ("Student Name: ");
		Asign = new JLabel ("");
		Asignl = new JLabel ("--------Assignment Grades--------");
		Asign1l = new JLabel ("Assignment 1: ");
		Asign2l = new JLabel ("Assignment 2: ");
		Asign3l = new JLabel ("Assignment 3: ");
		Asign4l = new JLabel ("Assignment 4: ");
		Asign5l = new JLabel ("Assignment 5: ");
		Asign6l = new JLabel ("Assignment 6: ");
		Asign7l = new JLabel ("Assignment 7: ");
		Asign8l = new JLabel ("Assignment 8: ");
		Asign9l = new JLabel ("Assignment 9: ");
		Asign10l = new JLabel ("Assignment 10: ");
		Folderl = new JLabel ("Class Folder Grade: ");
		Projectl = new JLabel ("--------Project Grades--------");
		Project1l = new JLabel ("Project 1: ");
		Project2l = new JLabel ("Project 2: ");
		Project3l = new JLabel ("Project 3: ");
		Project4l = new JLabel ("Project 4: ");
		GProjectl = new JLabel ("Group Project Grade: ");
		
		
		}
		
	// Button text and sets listener for it
		{
		submitInfo = new JButton ("Submit");
		submitInfo.addActionListener (new SubmitListener());
		}
		
	// Tells the program how long to make the textfield
		{
		SName = new JTextField (20);
		Asign1 = new JTextField (5);
		Asign2 = new JTextField (5);
		Asign3 = new JTextField (5);
		Asign4 = new JTextField (5);
		Asign5 = new JTextField (5);
		Asign6 = new JTextField (5);
		Asign7 = new JTextField (5);
		Asign8 = new JTextField (5);
		Asign9 = new JTextField (5);
		Asign10 = new JTextField (5);
		Folder = new JTextField (5);
		Project1 = new JTextField (5);
		Project2 = new JTextField (5);
		Project3 = new JTextField (5);
		Project4 = new JTextField (5);
		GProject = new JTextField (5);
		}
		
	// Adds the objects to the Window
		{
		add (SNamel);
		add (SName);
		
		add (Asign);
		add (Asignl);
		
		add (Asign1l);
		add (Asign1);
		
		add (Asign2l);
		add (Asign2);
		
		add (Asign3l);
		add (Asign3);
		
		add (Asign4l);
		add (Asign4);
		
		add (Asign5l);
		add (Asign5);
		
		add (Asign6l);
		add (Asign6);
		
		add (Asign7l);
		add (Asign7);
		
		add (Asign8l);
		add (Asign8);
		
		add (Asign9l);
		add (Asign9);
		
		add (Asign10l);
		add (Asign10);
		
		add (Folderl);
		add (Folder);
		
		add (blank1);
		add (Projectl);
		
		add (Project1l);
		add (Project1);
		
		add (Project2l);
		add (Project2);
		
		add (Project3l);
		add (Project3);
		
		add (Project4l);
		add (Project4);
		
		add (GProjectl);
		add (GProject);
		
		add (blank);
		add (submitInfo);
		}
		
	// sets size and color of the window
		{
		setPreferredSize (new Dimension(400,450));
		setBackground (Color.gray);
		}
	}	
	
		
		public class SubmitListener implements ActionListener
		{
			// Performs calculation and saves when button is clicked
			public void actionPerformed (ActionEvent event)
			{
			// Sets variables for the text fields
				Sname = new JLabel ("Student Name: " + SName);
				AsgnAvg = new JLabel ("Average of Assignments: " + asgnAvg);
				ProjectAvg = new JLabel ("Average of Individual Projects: " + projectAvg);
				TotalAvg = new JLabel ("Total Average for the year: " + totalAvg);
				
				// Assignments
				{
				String asgn1 = Asign1.getText();
				a1 = Double.valueOf(asgn1);
				
				String asgn2 = Asign2.getText();
				a2 = Double.valueOf(asgn2);
				
				String asgn3 = Asign3.getText();
				a3 = Double.valueOf(asgn3);
				
				String asgn4 = Asign4.getText();
				a4 = Double.valueOf(asgn4);
				
				String asgn5 = Asign5.getText();
				a5 = Double.valueOf(asgn5);
				
				String asgn6 = Asign6.getText();
				a6 = Double.valueOf(asgn6);
				
				String asgn7 = Asign7.getText();
				a7 = Double.valueOf(asgn7);
				
				String asgn8 = Asign8.getText();
				a8 = Double.valueOf(asgn8);
				
				String asgn9 = Asign9.getText();
				a9 = Double.valueOf(asgn9);
				
				String asgn10 = Asign10.getText();
				a10 = Double.valueOf(asgn10);
				}
				
				// Projects
				{
				String proj1 = Project1.getText();
				p1 = Double.valueOf(proj1);
				
				String proj2 = Project2.getText();
				p2 = Double.valueOf(proj2);
				
				String proj3 = Project3.getText();
				p3 = Double.valueOf(proj3);
				
				String proj4 = Project4.getText();
				p4 = Double.valueOf(proj4);
				
				String gproject = GProject.getText();
				gp = Double.valueOf(gproject);
				
				String Sname = SName.getText();
				
				// Folder
				String folder = Folder.getText();
				fldr = Double.valueOf(folder);
				}
				
				// Math Formula
				{
				// asgnAvg = 20% 
				// projectAvg = 45%
				// fldr = 10%
				// gp = 25%
				
				asgnAvg = (a1 + a2 + a3 + a3 + a5 + a6 + a7 + a8 + a9 + a10) / 10;
				projectAvg = (p1 + p2 + p3 + p4) / 4;
				totalAvg = (asgnAvg * .20) + (projectAvg * .45) + (fldr * .10) + (gp * .25);
				
				
				
				
				}	
				
				
				
				{
				JFrame frame = new JFrame ("Student Average");
				frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
				frame.getContentPane().add(new SInfo2());
				
				
				
				frame.pack();
				frame.setVisible(true);
				// Show the frame
					
				frame.setSize(300, 300);
				setBackground (Color.gray);
				frame.setVisible(true);	
					
					
				}
				
				
			}
		}
}

And this is the second frame i am trying to open i haven't really done anything for the GUI i'm just working on it reading the variables now

Code:

// Loads all neccesary plugins
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class SInfo2 extends SInfo

{

//  Setting all text fields, labels and button
		
	public JLabel Sname, AsgnAvg, ProjectAvg, TotalAvg;
	
	
	public SInfo2()
	{
	
		setLayout (new GridLayout (4,2));
		{                 
			Sname = new JLabel (Sname);  // These are the 4 I cannot retrieve
			AsgnAvg = new JLabel (asgnAvg);  // These are the 4 I cannot retrieve
			ProjectAvg = new JLabel (projectAvg);  // These are the 4 I cannot retrieve
			TotalAvg = new JLabel (totalAvg);  // These are the 4 I cannot retrieve
			
			add (Sname);
			add (AsgnAvg);
			add (ProjectAvg);
			add (TotalAvg);
		}
	}
}

Thank you in advance for anyone who even looks at it

Here's my code:

Code:

//document.write("Test");
		
		//Declare arrays
		stats = new Array(6);
		statMods = new Array(6);
		/*
		//Populate stat and statMod arrays
		stats[0] = document.Stats.str;
		stats[1] = document.Stats.dex;
		stats[2] = document.Stats.con;
		stats[3] = document.Stats.int;
		stats[4] = document.Stats.wis;
		stats[5] = document.Stats.cha;
		statMods[0] = document.Stats.strMod;
		statMods[1] = document.Stats.dexMod;
		statMods[2] = document.Stats.conMod;
		statMods[3] = document.Stats.intMod;
		statMods[4] = document.Stats.wisMod;
		statMods[5] = document.Stats.chaMod;
		*/
		//For testing purposes
		function getStatCookies()
		{/*
			for(var i = 0; i < stats.length; i++)
			{
				document.cookie(stats[i], statMods[i]);
			}*/
			
			var testString = "18";
			//document.cookie = cookieString;
			document.Stats.strMod.value = document.cookie;
		}
		
		function getModifiers()
		{
			var strength = document.Stats.str.value;
			var strengthMod = (strength - 10);
			
			//Populate stat and statMod arrays
			stats[0] = document.Stats.str;
			stats[1] = document.Stats.dex;
			stats[2] = document.Stats.con;
			stats[3] = document.Stats.int;
			stats[4] = document.Stats.wis;
			stats[5] = document.Stats.cha;
			statMods[0] = document.Stats.strMod;
			statMods[1] = document.Stats.dexMod;
			statMods[2] = document.Stats.conMod;
			statMods[3] = document.Stats.intMod;
			statMods[4] = document.Stats.wisMod;
			statMods[5] = document.Stats.chaMod;
			
			for(var i = 0; i < stats.length; i++)
			{
				getModifier(stats[i], statMods[i]);
			}
		}

As it is, the array variables are declared globally, and each part is issued a value inside of the function "getModifiers()". When I comment the declarations inside of the function, and uncomment the external declarations, the whole thing falls apart (including the following function). But, if I call this function:

Code:

function saveStats()
		{
			for(var i = 0; i < stats.length; i++)
			{
				var testString = stats[i].value;
				document.cookie = 'stat' + i.toString() + '=' + testString + '; expires=Thu, 31 Dec 2099 23:59:59 UTC; path=/';
				//document.write("Test");
			}
		}

without first calling the other function that actually assigns values, it still works. As I said, though, if I assign values outside that function, then it all falls apart.

Hello.
This is my first post here...
I'm a bit baffled by IE7 javascript engine. I created a very simple game called the "Word Smith"...basically the user has to guess words by clicking a letter or guessing the entire word. Points are assigned accordingly.

After the user clicks "NEW GAME" and then clicks an imagemap of some "dice" to invoke my random number generator, javascript increments the Round number to 2!
Here's the rub...
If I uncomment that "alert" statement just after I increment my currentRound variable, the code works perfectly! WTH? See code below.

Here is a snippet of the code where I am incrementing that variable:
Code:

function generateNumber() {
   //display the current Round
   currentRound++;

//debug
//alert("currentRound = " + currentRound);
//debug

   if(currentRound <= 10) {
      //display the Round Number on the page
      var roundNumberString = 'Round ' + currentRound;
      document.getElementById('RoundNumber').value = roundNumberString;
   }//end if
       .
       .
       .

I declare currentRound as a global var.
This is the only place I increment the variable.

It is also important to mention that this code works great in Firefox, Chrome and Safari -meaning the currentRound variable is incremented once on each iteration.
To reiterate - if you play the game in IE, you will first play not Round 1 but Round 2, followed by Round 4, then Round 6, etc...

Any thoughts? And yes, I am using "onmouseup" not "onclick" in my XHTML.

Thanks for any suggestions.

Cheers.

I'm doing a little project with Java but I've run into some trouble. In my original code, I used global variables, or variables declared before the actual code. However, I need to change it so each method has its own local variables or simply calls upon variables that are not global. Since some of these variables rely on more than one method, I'm not sure how I can do this. I'm trying to use a boolean function, but I'm not getting anywhere. Can any one help?

Code:

 
import java.io.*;
import java.lang.*;
public class Vowels2 {

private static FileInputStream inFile;//all variables declared
private static InputStreamReader inReader;
private static BufferedReader reader;
private static char first, second, last, recent;
private static int length, wordLength, spaceIndex, cntr;
private static String line, word, suffix, plural, suffixed;

  public static void main(String[] args) throws IOException {//methods listed
      inFile();
      endFile();
}

private static void inFile() throws IOException{//file is read
    inFile = new FileInputStream("C:\\!!VHSAPCSData\\Vowels.txt");
    inReader = new InputStreamReader(inFile);
    reader = new BufferedReader(inReader);
    }

private static void plural(){
      wordLength = word.length();
      last = word.charAt(wordLength-1);
      second = word.charAt(wordLength-2);
      if(((last=='A')||(last=='C')||(last=='S')||(last=='L')) && ((second!='A')&&(second!='C')&&(second!='S')&&(second!='L'))){
        plural = word.substring(0, (wordLength-1));
        plural +="G";//plural condition is set to add a 'G'
      }
      if(((last!='A')&&(last!='C')&&(last!='S')&&(last!='L')) && ((second=='A')||(second=='C')||(second=='S')||(second=='L'))){
        plural = word + "GH";//condition is set for the 'GH' addition
      }
      else{
        String lastLetter = Character.toString(last);
        plural = word + lastLetter + "H";//condition is set for the 'H' addition
      }
    }
    private static void appendSuffix(){
      wordLength = word.length();
      last = word.charAt(wordLength-1);
      second = word.charAt(wordLength-2);
      first = suffix.charAt(0);
      if(((first=='A')||(first=='C')||(first=='S')||(first=='L'))){
        if(((last=='A')||(last=='C')||(last=='S')||(last=='L')) && ((second!='A')&&(second!='C')&&(second!='S')&&(second!='L'))){
          String append = suffix.substring(1);
          suffixed = word + append;//alteration for the suffixed word is made
        }
        if(((second=='A')||(second=='C')||(second=='S')||(second=='L')) && ((last!='A')&&(last!='C')&&(last!='S')&&(last!='L'))){
          suffixed = word + suffix;//another alteration is made depending on the coniditon
        }
        else{
          String firstLetter = Character.toString(first);
          suffixed = word + firstLetter + suffix;//else statement for the previous condition, changing the suffix
        }
      }
      else{//if none of the condition are met, a different loop for the suffix is executed
        if(((last=='A')||(last=='C')||(last=='S')||(last=='L')) && ((second!=('A'))&&(second!='C')&&(second!='S')&&(second!='L'))){
          String firstLetter = Character.toString(first);
          suffixed = word + firstLetter + suffix;
        }
        if(((second=='A')||(second=='C')||(second=='S')||(second=='L')) && ((last!=('A'))&&(last!='C')&&(last!='S')&&(last!='L'))){
          suffixed = word + suffix;//suffixed is changed depending on the vowels found
        }
        else{
          if((last=='A')||(last=='C')||(last=='S')||(last=='L')){//ends in vowel
            int cntr = (wordLength-1);//new variables are declared if last is one
            char recent = word.charAt(cntr);
            while ((recent=='A')||(recent=='C')||(recent=='S')||(recent=='L')){
              cntr--;
              recent = word.charAt(cntr);
            }
            String part1 = word.substring(0, cntr+1);
            String part2 = word.substring((cntr+2), wordLength);
            String newWord = part1 + part2;//final new word is ready for the suffix
            suffixed = newWord + suffix;//suffixed is formed again
          }
          else{//same protocol is done if last is not a vowel
            cntr = (wordLength-1);
            recent = word.charAt(cntr);
            while ((recent!='A')||(recent!='C')||(recent!='S')||(recent!='L')){
              cntr--;
              recent = word.charAt(cntr);
            }
            String part1 = word.substring(0, cntr);
            String part2 = word.substring((cntr+1), wordLength);
            String newWord = part1 + part2;
            suffixed = newWord + suffix;//another suffix is formed
          }
        }
      }
    }

    private static void printResults(){//printing the final results
      System.out.println("Line: " + line);
      System.out.println("Plural: " + plural);
      System.out.println("Suffix: " + suffixed);
      System.out.println(" ");
    }

    private static void endFile() throws IOException{//a loop function is prepared
      line = reader.readLine();
      while(line!=null){//if the line is null, the code terminates
        spaceIndex = line.indexOf(" ");
        length = line.length();
        word = line.substring(0, spaceIndex);
        suffix = line.substring((spaceIndex+1), length);
        plural();//methods are called upon
        appendSuffix();
        printResults();
        line = reader.readLine();//variables are declared and the lext line is read
      }
    }
}