JavaScript - Need Help With Javascript Recipe Conversion For School

I have to create a function that uses infoMenu(), and I am having a hard time with this. I have created a loadInfo() function, and I am supposed to follow the same steps, but for some reason I am not getting it. Below is an example of what I have done already.
Code:

 function loadInfo(myForm) {
var menuSelect=myForm.Menu.selectedIndex
var menuUrl=myForm.Menu.options[menuSelect].value+".html"
window.location=menuUrl
} 

This is what I placed in my select tag to in order to go to the pages once they were selected.
Code:

 <select name="Menu" onchange="loadInfo(this.form)"> 

What i am trying to do is create the infoMenu() function that uses the selectedIndex value of the moreInfo <select> list in the menuInfo<form>. Any help would be greatly appreciated

Hi,

I would like to create a calculator which can help parents when they calculate their student's school fees on our school's joomla web site. Ive attached our school's fee table. Is there anyone who can help me please?

Regards

This post is going to seem long because of the coding in it, but the solutions I need are simple.

BASICALLY
I need to know:

1) where to use the if's and else's
2)how to call the boolean method isEmpty() from the CanOfCoke class
3)how to apply methods from the other classes to the machine, bin, and can variables
4) how to check to see if an ArrayList has any content (ie if the student has any coins or not)

This is complicated for me to complain because I'm a complete n00b and this is my first Java class, but I hope someone can help me because my teacher isn't all that great at explaining things. and I'm stuck on the LAST method of the LAST class of our FINAL project lol.

The project has 5 classes:

Coin
DrinksMachine
CanOfCoke
GarbageDisposalUnit
Student

I am working on the Student class and here is the code I have so far:

Code:

import java.util.ArrayList;
/**
 * Write a description of class Student here.
 * 
 * @author xxx
 * @version Project part 5
 */
public class Student
{
    private String name;
    private ArrayList purse;
    private boolean sobbing;
    private DrinksMachine machine;
    private GarbageDisposalUnit bin;
    private CanOfCoke can;

    /**
     * Constructor for objects of class Student
     * 
     * @ param pName The name of the studen
     * @ param nCoins The number of coins the student has
     */
    public Student(String pName, int nCoins)
    {
        name = pName;
        purse = new ArrayList<Coin>(nCoins);
        sobbing = false;
        machine = null;
        bin = null;
        can = null;
        
    }

    /**
     * This method will set the students machine variable
     * 
     * @param  name of the machine
     */
    public void setMachine(DrinksMachine aMachine)
    {
        machine = aMachine;
    }
    
    /**
     * This method will set the students garbage disposal unit
     * 
     * @param name of the garbage disposal unit
     */
    public void setBin(GarbageDisposalUnit aBin)
    {
        bin = aBin;
    }
    
    /**
     * This method will print out information about the student
     * 
     */
    public void displaySelf()
    {
        if (can == null)
        {
            System.out.println(name + " does not have a can of Coke.");
        }
        else
        {
            System.out.println(name + " has a can of Coke.");
        }
        if (sobbing == true)
        {
            System.out.println(name + " is sobbing.");
        }
        else
        {
            System.out.println(name + " is not sobbing.");
        }
        System.out.println(name + " has" + purse.size() + " coins in their purse.");
        
    }
    
    /**
     * This method will perform the actions of:
     * 
     * If they have a can of coke:
     * The student takes a single sip from a can of Coke and puts it in the trash bin when empty.
     * 
     * If they don't have a can of coke:
     * The student inserts a coin and obtain the can of coke and take a sip from it.
     * 
     * If they can't get a can of coke:
     * The student sobs.
     * 
     */
    public void doAction()
    {
    if (can != null)
    {
        can.giveSip();
    }
        
    else if (can.isEmpty())
    {
            bin.addCan(bi);
            can = null;
    }
    
    else
    {
        if (purse != null && can != isEmpty())
        {
            machine.insertCoin();
            machine.deliverCan();
            can.open();
            can.giveSip();
        }
        else
        {
            sobbing = true;
        }
    }  
    }
}

This is the part I am having troubles with:

[CODE

public void doAction()
{
if (can != null)
{
can.giveSip();
}

else if (can.isEmpty())
{
bin.addCan(bi);
can = null;
}

else
{
if (purse != null && can != isEmpty())
{
machine.insertCoin();
machine.deliverCan();
can.open();
can.giveSip();
}
else
{
sobbing = true;
}
}
}
}
[/CODE]

Here are his horrible instructions:

a method with signature public void doAction() which performs the following actions:
i. if the Student has a can of Coke then they take a single sip from it. If it becomes empty they put it in the bin, and cease to hold it (i.e. can is set to null). The doAction() method then exits.
ii. if the Student does not have a can of coke then they insert a Coin(if they have one) into the coke machine (if it isn't empty), take the can of Coke they have paid for, and take a sip from it (after opening the can). If for any reason they are unable to get a can of Coke (machine empty, or no Coins) they begin to sob.
iii. Pseudo-code for this is shown below:
IF the student has a can THEN
take a sip
IF the can is now empty THEN
add it to the bin
OTHERWISE (i.e. the student does not have a can to start with)
IF the student has a Coin AND the machine is not empty THEN
insert a Coin into the machine
reduce Coins by one
get the can from the machine
open the can and take a sip
OTHERWISE
student starts sobbing

Hello there,

I'm a 30yr old returning to school and I signed up for a CMIS102 class, thinking it be more explanatory as the syllabus let on. But I was wrong. While I do understand some of what the professor has been teaching us, like modular programming and IfElse statements, I can't wrap my head around things like While Loops.


My professor has saddled us with a couple assignments, requiring us to write in pseudocode and I was wondering if anyone could explain what he wants from this assignment or even help me with it, that maybe I can finally have a grasp of it, and will know what I'm doing on the final.

~Tia

P.S.
I've posted the assignment question below:

I need to write a pseudo-codepseudocode for the following question but don't know how:

Write a program to read a list of exam scores (in the range 0 to 100) and to output the total number of grades and the number of grades in each letter=grade category.

The end input is indicated by a negative score as a sentinel value. (The negative value is used only to end the loop, so do not use it in the calculations.

Example:
88
93
55
77
100
-1

(The output would be)
Total number of grades = 5
Number of A's =2
Number of B's = 1
Number of C's =1
Number of D's = 0
Number of F's =1
Must prompt user to run again

Hey thanks in advance to anyone who can take a peak at my code and hopefully point me in the correct direction.

I have been working on my final project in my javascript class for a bit, and there are a few erros I cant seem to find through firebug or error console.
It is due this evening at midnight, so anyone that could help, I really need this assignment for a decent grade.

Basically there are two issues so far, one needs to be solved so the other can be as well.

First, line 103 - 105 should create a hyperlink to the specified id, but is doesn't return a number. so the link goes no where
it is this code:
PHP Code:
 //create hypertext link to the section heading 
            var linkItem = document.createElement("a"); 
            linkItem.innerHTML = n.innerHTML; 
            linkItem.href = "#" + n.id; 


Next I belive there is a problem with the function expandCollapseDoc(), that might fix itself when the other problem is solved.

The document should expand and collapse with the menu.

Here is my javascript code:
PHP Code:
/*
   New Perspectives on JavaScript, 2nd Edition
   Tutorial 7
   Tutorial Case

   Author: Mike Cleghorn
   Date:   2-15-10

   Filename: toc.js

   Global Variables:
   sections
      An array contain the HTML elements used as section headings in the historic document

   Functions List:

   addEvent(object, evName, fnName, cap)
      Adds an event hander to object where evName is the name of the event,
      fnName is the function assigned to the event, and cap indicates whether
      event handler occurs during the capture phase (true) or bubbling
      phase (false)

   makeTOC()
      Generate a table of contents as a nested list for the contents of the "doc" 
      element within the current Web page. Store the nested list in the "toc"
      element.

   levelNum(node)
      Returns the level number of the object node. If the object node does not
      represent a section heading, the function returns the value -1.

   createList()
      Goes through the child nodes of the "doc" element searching for section headings.
      When it finds a section heading, a new entry is added to the table of contents

   expandCollapse()
      Expands and collapse the content of the table of contents and the historic
      document

   expandCollapseDoc()
      Goes through the child nodes of the "doc" element determining which elements to
      hide and which elements to display

   isHidden(object)
      Returns a Boolean value indicating whether object is hidden (true) or
      not hidden (false) on the Web page by examining the display style for object
      and all its parent nodes up to the body element

*/

function addEvent(object, evName, fnName, cap) {
   if (object.attachEvent)
       object.attachEvent("on" + evName, fnName);
   else if (object.addEventListener)
       object.addEventListener(evName, fnName, cap);
}

addEvent(window, "load", makeTOC, false);

var sections = new Array("h1","h2","h3","h4","h5","h6");
var sourceDoc; //document on which TOC is based on
 
function makeTOC(){
    var TOC = document.getElementById("toc");
    TOC.innerHTML = "<h1>Table of Contents</h1>";
    var TOCList = document.createElement("ol");
    TOC.appendChild(TOCList);
    
    sourceDoc = document.getElementById("doc");
    
    //generate list items containing section headings
    createList(sourceDoc, TOCList);
}

function levelNum(node) {
    for (var i = 0; i < sections.length; i++) {
        if(node.nodeName == sections[i].toUpperCase()) return i;
    }
    return -1; //node is not section heading
}

function createList(object, list) {

    var prevLevel = 0; //level of the pervious TOC entry
    
    var headNum =  0; //running count of headings
    
    for (var n = object.firstChild; n != null; n = n.nextSibling) {
        //loop through all nodes in object
        
        var nodeLevel = levelNum(n);
        if (nodeLevel != -1) {
            //node represents a section heading
            
            //insert id for the section heading if necessary
            headNum++;
            
            //create list item to match
            var listItem = document.createElement("li");
            listItem.id = "TOC" + n.id;
            
            
            //create hypertext link to the section heading
            var linkItem = document.createElement("a");
            linkItem.innerHTML = n.innerHTML;
            linkItem.href = "#" + n.id;
                        

            //append the hypertext to the list entry
            listItem.appendChild(linkItem);
            
            
            if (nodeLevel == prevLevel) {
                //append the entry to the current list
                list.appendChild(listItem);
            } else if (nodeLevel > prevLevel) {
                //append entry to new nest list
                var nestedList = document.createElement("ol");
                nestedList.appendChild(listItem);
                
                list.lastChild.appendChild(nestedList);
                
                //add plus/minus box beffore the text
                var plusMinusBox = document.createElement("span");
                plusMinusBox.innerHTML = "--";
                addEvent(plusMinusBox, "click", expandCollapse, false)
                nestedList.parentNode.insertBefore(plusMinusBox, nestedList.previousSibling);
                
                list = nestedList;
                prevLevel = nodeLevel;
                
            } else if (nodeLevel < prevLevel) {
                //append entry to a higher-level list
                var levelUp = prevLevel - nodeLevel;
                for (var i = 1; i<= levelUp; i++) {list = list.parentNode.parentNode;}
                
                list.appendChild(listItem);
                prevLevel = nodeLevel;
            }
        }
    }
}

function expandCollapse(e) {
    var plusMinusBox = e.target || event.srcElement;
    var nestedList = plusMinusBox.nextSibling.nextSibling;

    //Toggle the plus and minus symbol
    if (plusMinusBox.innerHTML == "--") plusMinusBox.innerHTML = "+"
    else plusMinusBox.innerHTML = "--";
    
    //Toggle display of nested list
    if(nestedList.style.display == "none") nestedList.style.display = ""
    else nestedList.style.display = "none";
                
    //expand/collapse doc to match TOC
    expandCollapseDoc();
}

function expandCollapseDoc() {
    var displayStatus = "";

    for  (var n = sourceDoc.firstChild; n != null; n = n.nextSibling) {
        var nodeLevel = levelNum(n);
        if (nodeLevel != -1) {
    
            //determain display status of TOC entry
            var TOCentry = document.getElementById("TOC" + n.id);
            
            if (isHidden(TOCentry)) displayStatus = "none"
            else displayStatus = "";
        }
        
        if (n.nodeType == 1) {
            //apply to current status for the node
            n.style.display = displayStatus;
        }
    }
}

function isHidden(object) {
    for (var n = object; n.nodeName != "BODY"; n = n.parentNode) {
        if (n.style.display = "none") return true;
    }
    return false;
} 



the html was too long, so i uploaded it to my webspace

you can check out the almost working version at http://www.kinetic-designs.net/final/usconst.htm

Again thank you so much! Any questions just ask!

Hi, am new to Java, Jquery and Java Script and I am finding my way through recently...

I have this HTML code

Code:

<html:text styleClass="ui-inputText" size="12" styleId="fromDate" property="fromDate" name="HomePageForm" readonly="readonly" />
<script>
initDatePicker("fromDate");
</script>

I want to perform this action using JS.
This will create a text-box with a calender affixed to it if used in Plain HTML...


This is the initdatepicker function

Code:

function initDatePicker(dateFieldId){
var format = '<%=ctx.getDateFormat()%>';
if (format == "yyyy-MM-dd"){
format= "yy-mm-dd";
}else if (format == "MM/dd/yyyy"){
format= "mm/dd/yy";
}else if (format == "dd-MMM-yyyy"){
format= "dd-M-yy"
}
$("#"+dateFieldId).datepicker({
showOn: 'button',
buttonImage: 'include/images/icons/calendar.png',
buttonImageOnly: true,
changeMonth: false,
changeYear: false,
buttonText: 'Select date' ,
dateFormat: format
});
}

I have done a few things, but, could not get the result I need...

Code:

cellIndex++;
var cellObj=$('#genericRules tr:eq('+index+') td:eq('+cellIndex+')');
cellObj.html('');
var table = document.getElementById("genericRules");
var rowElem = table.rows[index];
var cell = rowElem.insertCell(3);
var txtInp = getTextField(indexName,index,'8');
cell.appendChild(txtInp);
var dateImg = getImage(index);
cell.appendChild(dateImg);
cell.align="center";
initDatePicker(indexName + '['+index+'].'+name+'from');

function getTextField(indexName, index, size) { //, maxlength
  var txtInp = document.createElement('input');
  txtInp.setAttribute('type', 'text');
  txtInp.setAttribute('class', 'ui-inputText');
  txtInp.setAttribute('indexed', 'true');
  txtInp.setAttribute('name', indexName + '['+index+'].'+name+'from');
  txtInp.setAttribute('id', indexName + '['+index+'].'+name+'from');
  txtInp.setAttribute('size',size);
  txtInp.className = "ui-inputText";
  txtInp.name=indexName+'['+index+'].'+name;
  txtInp.indexed ='true';
  return txtInp;
}


function getImage(index){
var image = document.createElement("img");

image.src = "<%=request.getContextPath()%>/include/images/icons/calendar.png";

image.setAttribute('class', 'inputCalendar');
image.className = "inputCalendar";
image.name = "imgDatevalue"+index;
image.id = "imgDatevalue"+index;
return image;
	}

My application is now showing me the image but, am not able to get the calender when i click on it..

I need help on this thing...
Please try to provide me with soem intel...

Hey everyone, I have a slight problem with my program and am in need of some help. I am writing a program that will take user input and convert the 8 digits the user enters (the 0's and 1's) and converts them into an integer between 0 and 255. It is a very simple program but I am still having some errors :/ If anyone could take a look at the program and get back to me, it would be very helpful!


Code:

import javax.swing.*;

public class BinaryToInteger
{
	static String userInput = JOptionPane.showInputDialog("Enter a binary number with 8 integers to convert.");		//Dialog Box that asks for user input
	static int binaryValue = Integer.parseInt(userInput);		//Parses the user's input into an integer
	
	
	public static void convert()		//Method to convert the user's input into a number
	{
		
		char firstNumber = userInput.charAt(0);		//Reads the eight numbers the user enters
		char secondNumber = userInput.charAt(1);
		char thirdNumber = userInput.charAt(2);
		char fourthNumber = userInput.charAt(3);
		char fifthNumber = userInput.charAt(4);
		char sixthNumber = userInput.charAt(5);
		char seventhNumber = userInput.charAt(6);
		char eigthNumber = userInput.charAt(7);
		
		System.out.print(firstNumber);		//Just to check to see if the correct numbers are being read from the JOptionPane
		System.out.print(secondNumber);
		System.out.print(thirdNumber);
		System.out.print(fourthNumber);
		System.out.print(fifthNumber);
		System.out.print(sixthNumber);
		System.out.print(seventhNumber);
		System.out.println(eigthNumber);
		
		int finalNumber = 0;  //Initializing "finalNumber"
		
		if(firstNumber == 1)		//Checking to see if "firstNumber" is equal to 1 then add 128 to "finalNumber" if it is, and do nothing if it is not
		{												//The same applies below
			finalNumber = finalNumber + 128;
		}
		else
		{
			
		}
		
		
		if(secondNumber == 1)
		{
			finalNumber = finalNumber + 64;
		}
		
		
		else
		{
			
		}
		
		
		if(thirdNumber == 1)
		{
			finalNumber = finalNumber + 32;
		}
		else
		{
			
		}
		
		
		if(fourthNumber == 1)
		{
			finalNumber = finalNumber + 16;
		}
		else
		{
			
		}
		
		
		if(fifthNumber == 1)
		{
			finalNumber = finalNumber + 8;
		}
		else
		{
			
		}
		
		
		if(sixthNumber == 1)
		{
			finalNumber = finalNumber + 4;
		}
		else
		{
			
		}
		
		
		if(seventhNumber == 1)
		{
			finalNumber = finalNumber + 2;
		}
		else
		{
			
		}
		
		
		if(eigthNumber == 1)
		{
			finalNumber = finalNumber + 1;
		}
		else
		{
			
		}
		
		
		System.out.print(finalNumber);		//Just to see what the compiler spit out as the answer
	}
	
	public static void main(String []args)		//Main method that runs the convert() method
	{
		convert();
	}
}

I would like to compare dates in the format used in twitter, which is this:
Wed Apr 08 14:30:10 +0000 2009

How do I do this? Do I need to convert to a timestamp first, and if so, how do I do this?

G

Dear All,
On my HTML page, I am trying to use as a snippet the script for automatic currency conversion. It is well known that exchange rates between currency are being changed very often (most of times even daily) and I don't want to republish either page with script or entire website every time the exchange rate changes. For website design I am using xsitepro software because I don't know programming.
So what I would like to have on specific page of website is something similar to table (if anyone has any better recommendation than using a table, please share). In this table I would like to state prices of my services. Primary currency is only one. So in this column, the numbers shouldn't be changed unless I want to change the prices (and of course therefore republish the website, no need to republish sitemap). In the rest of the columns the numbers should be changed immediately, without needing to republish anything (thats the point of the script) and also rounded to each 5. What I mean with ''each 5'' is shown on few of the following random chosen examples (1500):

1500.03 is rounded to 1500
1500.30 is rounded to 1500
1500.50 is rounded to 1500
1502.49 is rounded to 1500
1502.50 is rounded to 1505 (!)
1504.99 is rounded to 1505
1505.01 is rounded to 1505
1507.49 is rounded to 1505
1507.50 is rounded to 1510

and so on. Idea is to prevent from getting coins. So the break point is on 2.50, 7.50, 12.50, 17.50, 22.50, 27.50 and so on. Not sure how to mathematically describe this. Hopefully I was understandable.

I want to have in the columns only the currencies that I am willing to accept if potential client cannot change the currency to my primary one (given in second most left column) in his local exchange office. But I repeat that what Im trying to do is having automatically and immediately updated numerical values on particular HTML page based on most recent exchange rates (of course trustful source is needed).
Since I don't know programming, I did some research on google and discovered this:

http://coinmill.com/webmaster_options.html

The downer script on the right side looks ok but its not even close to what I need due to five reasons:
- it is being converted outside the table
- with such way i cannot clearly show which currency is primary (prefered) one
- conversion is being done to only one other currency at the same time
- no rounding to ''each 5''
- unknown source (and therefore untrustful one) of updating most recent exchange rates

Table such as this one:

http://www.x-rates.com/

looks great but still not meeting my requirements. I would like to replace flags in the left column with ''service 1'', ''service 2'', ''product 1'' etc. Also I have no idea how rounding could be done.
So at the end I would end up with something like (here Im showing only two ''still willing to accept'' currencies just to show an example):


Currency:Euro Currency:American Dollar Currency:Japanese Yen
Service1 500 670 51535
Service2 400 535 41228
Service3 200 265 20614

Top left corner as it is on x-rates.com would be even better.

note: when I previewed my post before submitting, I noticed that the forum doesn't let me make so much spaces but I think those numbers are still understandable where do they belong.

Any help would be muuuuuch appricated

Hello everyone,
'recently converted an excel timesheet to a PDF form. Trying to get some help to convert two excel formulas (formulae?) into javascript.
First Excel formula is intended to return the value of "40" if the total is above 40, otherwise display actual value: =IF(L17>40, 40,L17)
Second excel formula is the "overtime" field, which displays the number of hrs above 40hrs, or displays "N/A" if below 40: =IF(L17>40, L17-40, "N/A")
I have essentially no experience in Javascript and I am trying to learn, but any help to get me over this hump will be appreciated.
Regards
tim

Hi All,
In javascript is it possible to convert a long number (as hex string) to a float number ?
Ex. 40 A0 00 D2 is 5.0001 and reverse

I know I can use math functions, then seperate out Sign/mantissa/exponent and then convert it in float, but their must be some easy alternative.

Can I use sprintf, is yes how can I use this?

Thansk for your help!

Regards
Max

I'm currently constructing a javascript "terminal" on a site I'm building so that I can test objects and functions outside of the web developer terminal in google chrome.

Given that I have active javascript defining an object called item, typing item in the chrome terminal returns Object and goes on to list the properties of item.

Moreover, I can define a function in the terminal like this: function(x) { return x }, and then function(item) will return Object and list the properties.

However, if I use form data and user input in the place of the argument, the datatype becomes a string and not an object, so typing item in the form and clicking a button that performs function(document.form.text.value) returns the string item and not Object.

Is there any way to convert this primitive string to an object so that I can then iterate through properties, and so on?