JavaScript - Manipulating Arrays.... Help !!

First of all thank you for reading my thread and giving time to help me. Here goes my question:

How to sort this array?

MY PRIORITY COLORS array:
------------
green , yellow

ALL COLORS array : <---- this will be your main array.
-----------------------
pink , green , orange

THE RESULTS: ( the results after you sort) (Not sorted by alphabetically, but sorted by the priority colors)
----------------
green , pink , orange



I hope you could help me solve this javascript sorting problem.

Thank you!

Hi could someone help with this javascript. i dont know where to start with the script which is in bold.
Program to report the results of an election.

// candidates
var candidateArray =
['Mr R Green...', 'Ms O Brown...', 'Ms Y Black...', 'Mr G White...', 'Ms B Grey....','Ms I Blue....', 'Mr V Pink....'];
// online votes
var onlineVotesArray = [21,47,23,11,56,47,30];
// paper votes
var paperVotesArray = [12,4,20,11,5,4,17];

// total votes -- to be initialised below
var totalVotesArray;
// Add code to
// -- initialise totalVotesArray with a new empty array of the same size as candidateArray
// -- use a for loop to add the online and paper votes for each candidate and store the result at the corresponding position in the total votes array.

Hi. I am fairly new to JavaScript.
I am having some troubles with arrays.
I am using Chrome 12 beta.

Here is a brief version of the code I am having trouble with
Code:

var array=new Array()
array[0]=new Array()
array[0][1]=new Array()

var array[0][1]=[
  3, 1, 4, 1, 5, 9, 2, 6, 5, ...
];

I do not want to use "array[0][1][n]" because my array has too many items to do that and it is just plain annoying to change the numbers that way.

I get an error on the "var buffers[0][1]=[" line saying:
"Uncaught SyntaxError: Unexpected token ["

What is the problem in my code?

Thank you ahead of time.
---mint

I am working on making 2 for loops of 2 arrays to get the total of them. Then I need to get the average heights. This is for a test, yet I have not got a clue, so I need clues as I cant get it to work and I am a new coder to javascript.

Code:

var heights = [15,16,17,18,19];
var numbers = [2,1,6,4,2];
var average = new Array(5);

average = 0

for (var heights = 0; heights <= 5; heights = heights+ 1)
{
total = 0
}
for (var numbers = 0; numbers <= 5; numbers = numbers + 1)
{
total = 0
average = heights / numbers;
}

document.write('The average height is ' + average);

Am I on the right road? I need to use this format and not functions. I have got 2 for statements but maybe I could do this with one, it is so tricky this javascript.

Hi, new to this forum but have a quick question about arrays, I've been working on this all night, and I'm at a loss. I'm trying to calculate the gpa of a user by using arrays and functions. Everything seems to be working besides two things. The array that contains the class names (className[]) always includes an extra two variables: my sentinel value which is finish, and "undefined" The arrays at the end won't produce a number when multiplied together. creditData[] and qualityPoints[].
Also, if you have any suggestions on my code, I'd appreciate it.


<script type="text/javascript">
<!--
/****************************************************************
** PrintExplanation - prints a message containing instructions to the user without
** any variable needed.
** Inputs:None
** Outputs:None
****************************************************************/
function PrintExplanation()
{
alert("This program will calculate your Grade Point Average for any given semester. Please enter only graded classes, no Pass/Fail Classes.");
}




/****************************************************************
** GetValidNumberInput - Error checks a number between two constraints.
** Inputs: promptString - allows the user to insert a string in order to be asked.
** lowerNum - the lower constraint you want to be compared.
** upperNum - the higher constraint you want to be compared.
** Outputs: numCredits
****************************************************************/

function GetValidNumberInput(promptString, lowerNum, upperNum)
{
var promptString;
var lowerNum;
var upperNum;
var numCredits;
numCredits=prompt(promptString);
while(numCredits<lowerNum || numCredits>upperNum)
{
numCredits=prompt(promptString);
}
numCredits=parseFloat(numCredits)
return numCredits
}


/****************************************************************
** CalculateGPA - Calculates the users GPA
** Inputs: totalCredits: The total amount of credits determined by the user.
** totalQualityPoints: The total amount of quality points determined by the user.
** Outputs: gpa - the users final grade point average.
****************************************************************/
function CalculateGPA(totalCredits, totalQualityPoints)
{
var totalCredits;
var totalQualityPoints;
var gpa;

gpa=totalQualityPoints/totalCredits
return gpa;
}


function GenerateGPAReport(totalCredits, totalQualityPoints)
{

}


/****************************************************************
** ConvertGradeToPoints - Converts a letter given by the user into a number corresponding to grade points.
** Inputs: grade - the letter of the grade the student recieved in the course.
** Outputs: points - the number value of the grade that was input by the user.
****************************************************************/

function ConvertGradeToPoints(grade)
{
var grade;
var points;
if(grade == "A" || grade== "a")
{
points=4
}
else if(grade == "B" || grade == "b")
{
points=3
}
else if(grade == "C" || grade == "c")
{
points=2
}
else if(grade == "D" || grade == "d")
{
points=1
}
else if(grade == "F" || grade == "f")
{
points=0
}
points=parseFloat(points);
return points;
}

//-->
</script>
</head>

<body>
<script type="text/javascript">


var promptString; /*Declares Variables*/
var className;
var numOfClasses;
var grade;
var semester;
var numCredits;
var lowerNum=1;
var upperNum=4;
var class1;
var i=0;
var counter=0;
var totalCredits=0;
var totalPoints=0;
var grade;
var counterCredits=0;
var counterGrade=0;
var points;
var gpa;
var qualityPoints;
var creditData;
var gradeData;
var x=0;
var totalQualityPoints=0;


PrintExplanation();
var className = new Array(i);
semester=prompt("Please enter the semester you would like to calculate your GPA for.");
document.write("Grade report for " + semester + "<br />");


while(class1!="finish") /*Stores the names of the classes taken into an array*/
{
class1=prompt("Enter the Class name, or finish to end");
className[i]=class1
i++
}


while(counter<=i) /*writes the classes in the array from top to bottom*/
{
document.write(className[counter] + "<br />");
counter++
}

var creditData = new Array(i)
while(counterCredits<=i) /*counts the total number of credits for all the classes*/
{
numCredits=GetValidNumberInput("How many credits is " + className[counterCredits] + " class worth?",1,4)
creditData[counterCredits]=numCredits
totalCredits=totalCredits + numCredits
counterCredits++
totalCredits=parseFloat(totalCredits);
}

var gradeData = new Array(i) /*collects information about grades in an array*/
while(counterGrade<i=)
{
points=prompt("What grade did you recieve in " + className[counterGrade] + "?");
points=ConvertGradeToPoints(points)
gradeData[counterCredits]=points
totalPoints=totalPoints+points
counterGrade++
}



while(x<=i)
{
qualityPoints=creditData[x]*gradeData[x]
totalQualityPoints=totalQualityPoints + qualityPoints
x++
}

gpa=CalculateGPA(totalCredits, qualityPoints)
document.write(gpa);










</script>
</body>

I have a quick question with multiple array and random numbers. If i generate my random numbers in one array, how would i take a selection of those numbers and put them in another array?

Ex: array 1: 25, 34, 38, 40, 22, 49

want to move numbers between 30 and 50 to another array.

array 2: 34, 38, 40, 49


is it as simple as for loops and if statements setting the conditions?
do i use a sorting method? (selection? bubble?)

any help would be appreciated.

is it possible to embed something like this
Code:

<object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' width='450' height='24'>
<param name='movie' value='http://youtubemp3.tv/player/player.swf'>
<param name='allowfullscreen' value='false'>
<param name='allowscriptaccess' value='always'>
<param name='wmode' value='transparent'>
<param name='flashvars' value='file=http://youtubemp3.tv/mp3embed-oeduvhv516z9.mp3&duration='>
<embed src='http://youtubemp3.tv/player/player.swf' width='450' height='24' allowscriptaccess='always' allowfullscreen='false' flashvars='file=http://youtubemp3.tv/mp3embed-oeduvhv516z9.mp3&duration=' />
</object>

into a array that will randomly pull things from it like this
Code:

<input type = "button" value="Call Out a Target" onclick="myFunction()"></button>

<div id = "demo1"></div>
<div id = "demo2"></div>

<script type="text/javascript">

function shuffle(array) {
var n = array.length, k, t;
if (n == 0) {return false};
while (--n) {
k = Math.floor(Math.random() * (n+1));
t = array[n];
array[n] = array[k];
array[k] = t;
}
}


function myFunction() {

var myarray=["red","blue", "yellow", "orange"];
shuffle (myarray);
document.getElementById("demo2").innerHTML = myarray[0];

}

</script>

Thanks!!!

Hey, I'm working on a problem and what I need the program to do is to add up the numbers in the array NOT add up how many numbers there are. There are 5 total numbers that a user will input. The counting of the numbers will be in a seperate method which will then return to the main. Then be displayed through system.out.println. I don't know where I am going wrong any help? Thanks!

Code:

 
import javax.swing.*;
import java.util.*;
public class Question10 {

public static void main (String []args) {

//declares
Scanner keyboard = new Scanner(System.in);

int [] myNums = new int[5];
for (int i=0; i < myNums.length; i++) {
System.out.println ("Please Enter Data");
 myNums[i]= keyboard.nextInt();
}




} //end main


public static int getTotal(int inArray) {

int a,b,c,d,e,f;
f = a+b+c+d+e;

return f;
}

}//end class

Hi again folks!

A code I did recently was that 10 football teams had to register and the program had to ask the question "please enter your team" ten times then show the display on screen.
This code works fine and does it jobs but I realized that I did this program a long winded way (shown below) :

<script type="text/javascript">

//ask to enter names
var enteredteam1= prompt("Please enter first team.", ""); //each team is shown as different variable
var enteredteam2= prompt("Please enter second team.", "");
var enteredteam3= prompt("Please enter third team.", "");
var enteredteam4= prompt("Please enter forth team.", "");
var enteredteam5= prompt("Please enter fifth team.", "");
var enteredteam6= prompt("Please enter sixth team.", "");
var enteredteam7= prompt("Please enter seventh team.", "");
var enteredteam8= prompt("Please enter eighth team.", "");
var enteredteam9= prompt("Please enter ninth team.", "");
var enteredteam10= prompt("Please enter final team.", "");

var team= [];

team[1]= enteredteam1 //the team should equal the entered value for the space
team[2]= enteredteam2
team[3]= enteredteam3
team[4]= enteredteam4
team[5]= enteredteam5
team[6]= enteredteam6
team[7]= enteredteam7
team[8]= enteredteam8
team[9]= enteredteam9
team[10]= enteredteam10

document.write("<h1>Registered Teams</h1>");

// display the teams on the screen beside number

document.write("<b>1.</b>" + team[1]); //write the entered value on the screen
document.write("<br><br><b>2.</b>" + team[2]);
document.write("<br><br><b>3.</b>" + team[3]);
document.write("<br><br><b>4.</b>" + team[4]);
document.write("<br><br><b>5.</b>" + team[5]);
document.write("<br><br><b>6.</b>" + team[6]);
document.write("<br><br><b>7.</b>" + team[7]);
document.write("<br><br><b>8.</b>" + team[8]);
document.write("<br><br><b>9.</b>" + team[9]);
document.write("<br><br><b>10.</b>" + team[10]);

</script>



I was wondering for future references could anyone suggest a simpler code to do something similar?
For instance what if I wanted to ask the question but I didn't know how many teams were going to be entered. It would ask the question (enter your team) until the user clicked on a button saying "finished" or something.

Once again, I am new to this field, so any code with comments would be helpful!

hi i have two arrays and i need to know which strings are in both arrays.

i know how to do the bit if the string is in both but i don't know how to compare them as such.

thanks

If anyone is planning on buying "ICAB4225B Automate Processes" in relation to a TAFE/College/School course, I suggest getting the teacher to actually READ the book before they use it.

Tonight has been a HE-Double Hockeysticks (Not sure on language in this forum) of fixing mistakes the book has made. Double commars inplace of singles, singles inplace of doubles, single brackets, whole chunks of text that are wrong. In one place in the book it tells me to copy the text in blod and there is none.

Anyway....

The code that the book has made me piece together over the last few questions has left me with:

Code:

<script type = "text/javascript">
{
	var counter = 0
	var NoOfItems
	var ItemsNames = new Array()
	
	

	
	NoOfItems = prompt ("How many items do you want to hock?","");
		for (NameCount=0; NameCount<NoOfItems; NameCount++)
			{
				ItemNames [NameCount] = prompt ("What are the names of your items?","");
			}
	
	document.write ("<form name='myform'><br><table>");
		while ( counter < NoOfItems)
			{
				document.write ("<tr><td><value>Enter the price of the " + ItemNames [count] + "</td><td><input type='text' name='" + ItemNames [count] + "'></td></tr>");
				counter++
			}
		document.write ("<tr><td><input type='submit' value='Submit Details' onClick='validateform'</td></tr></table></form>");
}
</SCRIPT>

The problem I am having it with the Array. I dont think that var = new Array is correct but thats what my text book is telling me. Any help?

I'm a newbie of JS and don't know if I have got the right terms in my question.
I want to lowercase all the arrays:

Code:

<script>
var txt = [
            ["Cats","Dogs","Rabbits"],
              ["Fish","Bones","Carrots"]
          ] 
 
document.write(txt[0][1] + " love eating " + txt[1][1]);
</script>

I know I can do something like this:

Code:

document.write(txt[0][1].toLowerCase() + " love eating " + txt[1][1].toLowerCase());

// or

var txt1 = txt[0][1] + " love eating " + txt[1][1];
document.write(txt1.toLowerCase());

But if I will loop through all the arrays and print them out, I am bothered with appending .toLowerCase(0 after each array one by one,
so is there any way to bind that method at one go?

I hope my question is understandable. Maybe I've used wrong terms of JS.
Thank you.

Hi,

I am trying to merge the values of 2 arrays.

array 1 = 1, 2, 3, 4, 5

array 2 = a, b, c, d, e

Resulting in:

array 3 = 1-a, 2-b, 3-c, 4-d, 5-e etc

both arrays that will be used originally will always of the same length. Both arrays will contain numbers

Can you please help?

Thanks