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JavaScript - Simple Loop Problems With For, While, Nested, Arrays
I am stuck on these problems and cannot figure them out! Any help would be appreciated. Thank you!
Code: public int sumkj(int k, int j){
// Complete the method using a for loop that will add the numbers from k to j,
// where j is greater than k
int total = 0;
// TODO: ADD LOOP CODE HERE
return total;
}
// whilesum10
public int whilesum10(){
// Complete the method using a while loop that will add the numbers
// from 1 to 10
int total = 0;
int i = 1;
// TODO: ADD LOOP CODE HERE
return total;
}
// whilesumkj
public int whilesumkj(int k, int j){
// Complete the method using a while loop that will add the numbers
// from k to j, where j is greater than k
int total = 0;
int i = k;
// TODO: ADD LOOP CODE HERE
return total;
}
public int dosum10(){
// Complete the method using a do-while loop (i.e. condition at end of loop)
// that will add the numbers from 1 to 10
int total = 0;
int i = 1;
// TODO: ADD LOOP CODE HERE
return total;
}
public int dosumkj(int k, int j){
// Complete the method using a do-while loop (i.e. condition at end of loop)
// that will add the numbers from k to j, where j is greater than k
int total = 0;
int i = k;
// TODO: ADD LOOP CODE HERE
return total;
}
public String arrayprint(){
String msg = "";
String abc[] = new String[6];
abc[0] = "a";
abc[1] = "b";
abc[2] = "c";
abc[3] = "d";
abc[4] = "e";
abc[5] = "f";
// Create a loop that will output the values stored in the array abc
// using a for loop and the array length
// TODO: ADD LOOP CODE HERE
return msg;
}
public String baseballOuts(){
String msg = "";
int totalOuts = 0;
// Write a set of nested for-loops that willdetermine the number of
// outs in a regulation baseball game. Assume: 9 innings per game,
// 2 halves per inning, 3 outs per half inning.
// You solution should include a loop (outer or nested) for each
// of the assumptions.
// TODO: ADD LOOP CODE HERE
msg = "Total number of outs in a regulation baseball game is " + totalOuts + ".";
return msg;
}
public String factorial (int n){
String msg = "";
int factnum = 1;
// Use a loop to calculate the factorial of an input integer.
// Note: If the input integer is too high an error may occur even if your
// logic is correct. Why? At what value of input does the error occur?
// How can you adjust the method so that either the error does not occur
// or the method "fails gracefully?" Write your answers in the form of
// a comment here.
// TODO: ADD LOOP CODE HERE
msg = n + "! = " + factnum;
return msg;
}
}
Similar TutorialsHi all I'm well aware that I can't post assignments here and expect an answer, however, I have been staring at this code for so long. I feel I am close to the solution (to get the correct output to the browser) but I just cannot get it to count how many moves it takes. I don't want an answer, but a nudge in the right direction would be very grateful. As you can see from the code and the output, it will attempt to write to the browser how many moves, but only '0'. Code: function rollDie()
{
return Math.floor(Math.random() * 6) + 1;
}
/*
*searches for a number in a number array.
*
*function takes two arguments
* the number to search for
* the number array to search
*function returns the array index at which the number was found, or -1 if not found.
*/
function findIndexOf(number, numberArray)
{
var indexWhereFound = -1;
for (var position = 0; position < numberArray.length; position = position + 1)
{
if (numberArray[position] == number)
{
indexWhereFound = position;
}
}
return indexWhereFound;
}
//ARRAYS that represent the board -- you do not need to change these
//array of special squares
var specialSquaresArray = [1,7,25,32,39,46,65,68,71,77];
//array of corresponding squares the player ascends or descends to
var connectedSquaresArray = [20,9,29,13,51,41,79,73,35,58];
//VARIABLES used -- you do not need to change these
//the square the player is currently on
var playersPosition;
//play is initially at START
playersPosition = 0;
//what they score when they roll the die
var playersScore;
//the index of the player's position in the special squares array or -1
var indexOfNumber;
//MAIN PROGRAM
//TODO add code here for parts (iii), (iv)(b), (v), and (vi)
// start of question(iii)
playersScore = rollDie();
document.write(' Sco ' + playersScore);
playersPosition = playersScore + playersPosition;
document.write(', Squa ' + playersPosition);
indexOfNumber = findIndexOf(playersPosition, specialSquaresArray);
if (indexOfNumber != -1)
{
document.write(', Ladder to Squa ' + connectedSquaresArray[indexOfNumber]);
playersPosition = connectedSquaresArray[indexOfNumber];
indexOfNumber = -1;
}
document.write('<BR>')
// end of question(iii)
// start of question(iv)(b)
while(playersPosition<=80)
{
playersScore = rollDie()
document.write(' Sco ' + playersScore)
playersPosition = playersPosition + playersScore
document.write(', Squa ' + playersPosition)
indexOfNumber = findIndexOf(playersPosition, specialSquaresArray)
if(indexOfNumber != -1)
{
document.write(', Ladder to Squa ' + connectedSquaresArray[indexOfNumber]);
playersPosition = connectedSquaresArray[indexOfNumber];
}
document.write('<BR>');
}
var countMoves = 0;
while(countMoves <= 0)
{
document.write('You took ' + countMoves + ' moves to get out');
countMoves = countMoves + 1
}
/*for (var countMoves = 0; countMoves < playersPosition; countMoves = countMoves + 1)
{
countMoves = countMoves + playersPosition;
document.write('You took ' + countMoves + ' moves to get out');
}*/
// end of question(iv)(b)
// start of question (v)
/*if (playersPosition >=80)
{
document.write('The player is out');
}*/
// end of question (v)
</SCRIPT>
</HEAD>
<BODY>
</BODY>
</HTML>
Many thanks. Hi i need a little help on a JavaScript program it ask the user for a keyboard character and a number of rows and columns to look like this RRRRR R___R R___R R___R RRRRR and also this in another program rrrrrr rrrrrr rrrrrr rrrrrr I currently have <html><body> <script type="text/javascript"> // Declare variables and constants var userInputText; // user input to go var numRow; // number of the rows var NumCol; // number of the columns var ES = ""; // empty string userInputText = prompt("Enter a keyboard character",ES); numRow = prompt("Enter the number of rows",ES); NumCol = prompt("Enter the number of columns",ES); //need a nested loop to draw the character box </script> </body> </html> if any one can help me finish this program i would appreciate it After struggling with this for the past 2 days, I've decided it is time to seek out some help. The program is a calculator to show the monthly payments required depending on if the terms are for 2, 3, 4, or 5 year financing. I have the following 4 variables that I need to be placed in the inner loop, but not sure how to do it. pay24, pay36, pay48, pay60 The following loop creates a 4 row x 2 column table which I need it to do, but the inner loop needs to show the value of the 4 variables above. Can someone assist me in this problem? Code: for ( var i=24; i<=60; i+=12 ) {
document.write("<tr>");
document.write("<td align=center>" + i + "</td>");
for ( var j = 2; j <= 2; j++ ) {
document.write("<td align=right>" + j + "</td>");
}
document.write("</tr>");
}
Hi all, I have three arrays and what I would like to do is to check the present year to see in which array it could be found. If in the cycleA array then we would have document.write("Cycle A"); If in cycleB, then document.write("Cycle B"); etc. If it was just one array then an IF statement within a FOR loop would work, but I'm thinking there could be a more compact way of checking three different arrays instead of having three different FOR and IFs. Any help would be appreciated. George Code: <script>
var cycleA = new Array("2011","2014","2017","2020","@023","2026","2029","2032","2035","2038","2041","2044","2047","2050","2053","2056","2059","2062","2065","2068","2071","2074","2077","2080","2083","2086","2089","2092","2095","2098");
var cycleB = new Array("2012","2015","2018","2021","2024","2027","2030","2033","2036","2039","2042","2045","2048","2051","2054","2057","2060","2063","2066","2069","2072","2075","2078","2081","2084","2087","2090","2093","2096","2099");
var cycleC = new Array("2013","2016","2019","2022","2025","2028","2031","2034","2037","2040","2043","2046","2049","2052","2055","2058","2061","2064","2067","2070","2073","2076","2079","2082","2085","2088","2091","2094","2097","2100");
var gpl = new Date();
var whatyear = gpl.getFullYear();
if(whatyear%2 == 0)document.write("Year II");
else document.write("Year I");
</script>
Hello guys, I'm new to this forum and to Javascript. I need to make a very simple website to check whether a ticket number is valid or not. I have created an array with all the codes necessary, but when I try to loop through it, the only thing that works as it should is the first element of the array. Basically, I want the code to display Correct!, if there is a match between user input and array, or Wrong if otherwise. Here is my code: Code: <!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<script type="text/javascript">
function validate() {
var list = new Array;
list[0]="zDv5BXAc";
list[1]="6YXF3Qwj";
list[2]="k8UKpgwo";
var code= document.getElementById("code");
var name = document.getElementById("name");
for(var i=list.length-1; i>=0; --i) {
if (code.value == list[i])
{
document.all.confirm.innerHTML = "Correct"
}
else
document.all.confirm.innerHTML = "Wrong"
}
}
</script>
</head>
<body>
<input name="Name" type="text" id="name" size="50">
<input name="Code" type="text" id="code" size="10">
<input name="Check Code" type="submit" value="Verify" onClick="validate()">
<div id="confirm"></div>
</body>
</html>
Okay I'm having a problem getting this code to work. I've tried different things. The application is supposed to calculate the sum of two numbers the user enters and the numbers inbetween those numbers. For example 10 and 15 would make 75 (10+11+12+13+14+15) There's nothing in the parameters of the for loop as I have tried different things but I don't think I've come up with a possible solution. Code: <html>
<head>
<script type="text/javascript">
function calculation() {
var a = document.getElementById("oneNum").value;
var b = document.getElementById("twoNum").value;
for (a=a;a=b;a++)
{
}
document.getElementById("sum").innerHTML = "The Sum is " + totalsum.toFixed(2);
}
</script>
</head>
<body>
<h2>Sum Application</h2>
<p>This calculator calculates the sum of the numbers between two numbers inclusive that are entered by the user. <br />
For example, if the user enters 10 and 15 the application would calculate 75 (10+11+12+13+14+15).<p>
Enter first number:
<input type="text" id="oneNum">
Enter second number:
<input type="text" id="twoNum">
<br />
<input type="button" value="Calculate" onClick="calculation()">
</body>
<p id="sum"></p>
</html>
Code: <html>
<head>
<title>lightning generator</title>
</head>
<body>
<canvas id='world' width='500' height='500' style='border: 1px solid black; padding:0;'></canvas>
<script type="text/javascript">
var world = {
}
;
world.ground = {
}
;
world.ground.slice = [];
var ctx = document.getElementById( 'world' ).getContext( '2d' );
world.ground.make = function( GArray ){
ctx.fillStyle = '#000';
for ( var i = 0; i <= GArray.length; i ++ ){
if ( GArray[i + 1] === null ){
GArray[i + 1] = GArray[i];
}
world.ground.slice[i] = GArray[i];
ctx.moveTo( i, - 500 );
ctx.lineTo( i, GArray[i] );
}
};
world.ground.make( [1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29] );
</script>
</body>
</html>
it should make a simple area at the bottom of the canvas thats black., a incling with a slope of 2 and than a straight line. .....dots ar unfiled..... ..._____________ ../ ./filled area... / Code: <script>
var rXL = "";
do
{
rXL = prompt("Enter more entries? Y/N"); // IF Y or N is entered, the loop should in theory exit
}
while (rXL != "Y" || rXL != "N");
</script>
IF Y or N is entered, the above loop should in theory exit, however it results in a infinite loop :/. Does anyone know what I'm doing wrong? Thank you all . I have the following code: Code: if (n==1 && g <=5)
{
sndPlayer1.URL ="Boy-a1.wav";
}
else if (n==1 && g >5)
{
sndPlayer1.URL ="Girl-a1.wav";
}
else if (n==2 && g <=5)
{
sndPlayer1.URL ="Boy-e1.wav";
}
else if (n==2 && g >5)
{
sndPlayer1.URL ="Girl-e1.wav";
}
else if (n==3 && g <=5)
{
sndPlayer1.URL ="Boy-i1.wav";
}
else if (n==3 && g >5)
{
sndPlayer1.URL ="Girl-i1.wav";
}
else if (n==4 && g <=5)
{
sndPlayer1.URL ="Boy-o1.wav";
}
else if (n==4 && g >5)
{
sndPlayer1.URL ="Girl-o1.wav";
}
else if (n==5 && g <=5)
{
sndPlayer1.URL ="Boy-u1.wav";
}
else if (n==5 && g >5)
{
sndPlayer1.URL ="Girl-u1.wav";
}
else if (n==6 && g <=5)
{
sndPlayer1.URL ="Boy-b1.wav";
}
else if (n==6 && g >5)
{
sndPlayer1.URL ="Girl-b1.wav";
}
else if (n==7 && g <=5)
{
sndPlayer1.URL ="Boy-b1.wav";
}
else if (n==7 && g >5)
{
sndPlayer1.URL ="Girl-b1.wav";
}
else if (n==8 && g <=5)
{
sndPlayer1.URL ="Boy-h1.wav";
}
else if (n==8 && g >5)
{
sndPlayer1.URL ="Girl-h1.wav";
}
else if (n==9 && g <=5)
{
sndPlayer1.URL ="Boy-t1.wav";
}
else if (n==9 && g >5)
{
sndPlayer1.URL ="Girl-t1.wav";
}
I was wondering what the best way to make a smaller simpler version of this code is? Would it be using a loop? If so can you help me with how to Hi guys I have what i think is a fairly simple script used for an image gallery with a next and back button. It seems to work pretty well, but i would like to make the gallery scroll round... ie when the user reaches the last picture and presses the next button again, the first image will be displayed again - and visa versa with the first image and the back button. Below is my JS, can post the small amount of HTML that calls it if necessary. Any help MUCH appreciated, been messing around with it for ages and being the newbie i am, can't seem to find any way of doing it Code: // List image names without extension
var myImg= new Array(6)
myImg[0]= "performance2011";
myImg[1]= "performance2005";
myImg[2]= "performance2006";
myImg[3]= "performance2007";
myImg[4]= "performance2008";
myImg[5]= "performance2009";
myImg[6]= "performance2010";
// Tell browser where to find the image
myImgSrc = "../images/";
// Tell browser the type of file
myImgEnd = ".jpg"
var i = 0;
// Create function to load image
function loadImg(){
document.imgSrc.src = myImgSrc + myImg[i] + myImgEnd;
}
// Create link function to switch image backward
function prev(){
if(i<1){
var l = i
} else {
var l = i-=1;
}
document.imgSrc.src = myImgSrc + myImg[l] + myImgEnd;
}
// Create link function to switch image forward
function next(){
if(i>5){
var l = i
} else {
var l = i+=1;
}
document.imgSrc.src = myImgSrc + myImg[l] + myImgEnd;
}
// Load function after page loads
window.onload=loadImg;
Hi all, I am working on a hangman game and have got myself into a bit of muddle with designing the function that prompts the user to enter a letter and then checks it hasn't already been entered, if it has it asks them to enter a different letter. I basically want each letter that is entered to be added to the var allGuesses, then each new entry should be compared against this - however it's not looping at the moment and I don't really know where to go from here.. Am I close? Or miles off? function getInput(aString) { var allGuesses = ''; var inputCharacter = window.prompt("Pick a single lower-case character", "") while (inputCharacter == allGuesses.indexOf(-1)) { reInputCharacter = window.prompt("You have picked " + inputCharacter + " already. Pick another single lower-case character", "") } allGuesses = allGuesses + inputCharacter document.write(allGuesses) } Any advice would be much appreciated! This is driving me crazy. I simply want to display the values of the checkboxes with a specific name. This loop executes only once, then stops, showing no error msg. I have found no similar problem elsewhere on the net and have done a ton of tests, but cannot find out why it won't continue to loop. I've included the whole html file. Please Help! Code: <HTML>
<SCRIPT language="JavaScript">
function test1()
{
var chkLen=document.frmTable.CHK0.length;
for (k=0;k<chkLen;k++)
{
//execution stops after one loop. no error msg.
document.write(document.getElementsByName('CHK0')[k].value);
}
}
</SCRIPT>
<FORM NAME=frmTable>
<TABLE BORDER=1>
<TR>
<TD><INPUT TYPE=CHECKBOX NAME=CHK0 VALUE='one'>1</TD>
<TD><INPUT TYPE=CHECKBOX NAME=CHK0 VALUE='two'>2</TD>
<TD><INPUT TYPE=CHECKBOX NAME=CHK0 VALUE='three'>3</TD>
</TR>
</TABLE><BR>
<INPUT TYPE=BUTTON VALUE='Go' onClick=test1()>
</FORM>
</HTML>
Okay, I am taking a js class and there is one minor bug that is driving me crazy with this assignment. First, here is the code I wrote, then my question: Code: var games = ["Jacks","Chutes and Ladders","Extreme Uno","Bopit","Barbie Doll"];
var price = [4.00,15.99,25.00,27.99,32.00];
var inventory = [40,15,30,20,40];
//I could not figure out how to make this work without assigning values first. It was giving NaN.
var subtotal = [0,0,0,0,0];
var qtySold = [0,0,0,0,0];
function chooseItem() {
var answer = 0;
while (answer != 6) {
var orderForm = "Choose a number below:\n";
for (var i=0; i<games.length; i++) {
orderForm = orderForm + (i + 1) + ".) " + games[i] + ": # in stock: " + inventory[i] + "\n";
}
orderForm = orderForm + "6.) Show Sales Summary";
answer = prompt(orderForm);
answer = parseFloat(answer);
if(answer != 6 && answer >= 1 && answer < games.length+1) {
var qty = prompt("How many " + games[answer-1] + " would you like?");
qtySold[answer-1] = parseFloat(qtySold[answer-1]) + parseFloat(qty);
subtotal[answer-1] = qtySold[answer-1] * price[answer-1];
} else if (answer < 1 || answer > 6) {
alert("Invalid Answer");
} else {
alert("Click OK to see your summary:");
}
}
var summary = "Your Sales: \n";
for (var j=0; j<qtySold.length; j++) {
summary = summary + qtySold[j] + " " + games[j] + " at " + currency(price[j]) + " each for a total of " + currency(subtotal[j]) + "\n";
}
alert(summary);
}
So basically, the arrays subtotal and qtySold need to retain values in case the "customer" chooses to add more of the same item in each order. What you see above works; however, when I alert the summary, it lists all of the items, even if there were none ordered. It simply says 0, but that is not what I want. Basically, I only want the total to reflect only the items that were actually selected. I do not what to do it this way: Code: var subtotal = [0,0,0,0,0]; var qtySold = [0,0,0,0,0]; I can effectively do this by NOT assigning any values to the qtySold array in the beginning: i.e. doing it this way: Code: var subtotal = new Array(); var qtySold = new Array(); The only problem is that when I do this, I get NaN at this point: Code: qtySold[answer-1] = parseFloat(qtySold[answer-1]) + parseFloat(qty); subtotal[answer-1] = qtySold[answer-1] * price[answer-1]; obviously, this is because I am referencing qtySold[answer-1] directly in the loop - so the first time through, there is nothing assigned. I can't (just before this line) assign 0 to each array item - to get it defined because if the user goes back in and adds more, it will always reset the number back to 0, which is not what I wanted. I tried adding an if..else statement instead, but cannot figure out how to get that to work? What are my options here? Thanks! Mike Hi all, I am creating a simple 3 field calculator that calculates net, vat and gross. The user has to input 2 of the 3 fields, hit calculate and it should fill the 3rd field. I have so far succeeded with the net field (enter in gross and vat) but the other 2 throw up spurious results! I have worked out these equations (they work on a calculator) Net = G - (( G * V ) / ( V + 100 )) VAT = (( G - N ) x 100 ) / N Gross = N + ( N x ( V / 100 )) Heres the code for the javascript Code: <script type="text/javascript">
function netvatgross_calc() {
var net = (Number(document.calc.gross.value))-(((Number(document.calc.gross.value)) * (Number(document.calc.vat.value)))/((Number(document.calc.vat.value))+100));
var net = net.toFixed(2);
document.calc.net.value=net;
var vat = (((Number(document.calc.gross.value))-(Number(document.calc.net.value)))*100)/(Number(document.calc.net.value));
var vat = vat.toFixed(2);
document.calc.vat.value=vat;
var gross = (Number(document.calc.net.value))+((Number(document.calc.vat.value))/100)*(Number(document.calc.net.value));
var gross = gross.toFixed(2);
document.calc.gross.value=gross;
}
</script>
Here's the work in progress I am also wanting to add some code to throw up an error if less or more than 2 values have been entered. What am I doing wrong? Any help greatly appreciated! Cheers Dan Hi all. I'm learning JS from pretty much scratch and the first thing I'm trying to do is simply make an image fade function. I just can't seem to make it work though, the image starts off at the right opacity (im this case 0.5) but after that the page goes white and the script never stops. It does seem to be counting up normally "opacity: 0.6 opacity: 0.7" etc. though. Code: <img src="1.jpg" id="pic1">
<script type="text/javascript">
var amount = 0.5;
var target = document.getElementById('pic1');
function fade() {
if (target.style.opacity < 1.0) {
target.style.opacity = amount;
amount = amount + 0.1;
document.write("<br>opacity: " + target.style.opacity);
setTimeout("fade()", 1000)
//fade();
}
}
fade();
</script>
edit I rewrote it to make it simpler but still having basically the same problem D:! I need to loop the alphabet and numbers 0-9 to initialize a few thousand arrays. This is for my site and is truly needed. http://www.thefreemenu.com I currently have every array written out and it takes up to much space in my .js file. The majority of my variables are empty but necessary and need to be there (including empty) for my site to work properly. Question is the last part Here's where I'm at. Code: var NewVarLetterOrNum = "a";
eval("_oneofseveralnames_" + NewVarLetterOrNum + "='this part works';");
alert(_oneofseveralnames_a);
This creates the variable _oneofseveralnames_a='this part works' Code: var newArrayLetterOrNum = "a";
eval("_oneofseveralnames_" + newArrayLetterOrNum + "= new Array();");
alert(_oneofseveralnames_a)
This creates the Array _oneofseveralnames_a=new Array(); and all the values in the array are null, but, now a variable like _nl_a[1]='something' can be used elsewhere because the array exists. This is all that is necessary for now because I can probably set all the variables to be blank with something like Code: i=1
while(i<=20){
_oneofseveralnames_a[i]="1-20";
i++
}
alert(_oneofseveralnames_[20]);
So now you have what I came to understand in the first few hours. Now to the hard part : ( I can't make multiple array's dynamically. I dont' know if its because I don't understand loops or arrays or what and its very fustrating. As for any answer you might be so kind as to provide, if you could dumb it down that would be greatly appreciated. Code: var newArray =new Array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z')
i=1
while(i<=26){
eval("_nl_" + newArray[i] + "= new Array();");
i++
}
alert(newArray[1]) // Is b, but
alert(_nl_b) //I can't get _nl_b to exist, I tried everything including taking away the quotes around the letters in every test
*/
var _nl_a =new Array()
var _img_a =new Array()
var _h_a =new Array()
var _r_a =new Array()
var _m_a =new Array()
var _yt_a =new Array()
var _i_a =new Array()
The above arrays are all the array _name_ parts I need but for example, a has 10 parts, a,p2_a,p3_a,.. p10_a. I need 10 pages for each letter of the alphabet and numbers 0-9 and a special all1, p2_all1 ... p10_all1. Overall 2200 arrays that need to be declared. Currently they are all written out.
/*
I'm developing a simple game that involves a system of interconnected nodes with unidirectional travel between nodes (similar to the circulation system!). The goal of the game is to get from a starting node to an ending node, which can be a variable number of nodes away. The program picks a random starting point, then randomly chooses one of its connecting nodes (cNodes) and pushes it onto a pathArray. A cNode is randomly chosen from this new node and it is pushed onto the pathArray. This continues for a designated number of turns, thus generating a pathArray (invisible to the player). The last element in the pathArray is the endNode and the goal of the puzzle. At each node the player is given two options of travel (though there may be more than two ways to go). One of these options MUST be the correct way if the player has not deviated from the path up until that point. If the player has deviated, this option can be any cNode. The other node is any cNode that does not lead to the endNode. The following code contains a simplified list of nodes that represents the content in my game. The function, however, is taken word for word. In this snippet, the pathArray & startNode have already been generated and I am trying to resolve how to assign "nodeChoice" as either the correct direction of travel (for a player on the correct path) or any random cNode (for a player who has deviated from the path). Keep in mind that the pathArray and cNodes lengths can be any size. Code: <script>
//NODES:
var nodeA = {name:"A"};
var nodeB = {name:"B"};
var nodeC = {name:"C"};
var nodeD = {name:"D"};
var nodeE = {name:"E"};
var nodeF = {name:"F"};
var nodeG = {name:"G"};
var nodeH = {name:"H"};
var nodeI = {name:"I"};
var nodeJ = {name:"J"};
var nodeK = {name:"K"};
//An array of all nodes in the system:
var systemArray = [nodeA, nodeB, nodeC, nodeD, nodeE, nodeF, nodeG, nodeH, nodeI, nodeJ, nodeK];
//Connecting Nodes (cNodes):
//(uni-directional, but cyclical)
nodeA.cNodes = [nodeB, nodeC];
nodeB.cNodes = [nodeD, nodeE, nodeF];
nodeC.cNodes = [nodeF, nodeG];
nodeD.cNodes = [nodeI, nodeH];
nodeE.cNodes = [nodeJ];
nodeF.cNodes = [nodeK];
nodeG.cNodes = [nodeK];
nodeJ.cNodes = [nodeA];
nodeK.cNodes = [nodeA];
nodeI.cNodes = [nodeA];
nodeH.cNodes = [nodeA];
//The path chosen (generated from code not included here)
var pathArray = [nodeA, nodeB, nodeE, nodeJ];
//nodeChoice will represent a cNode from any given node
var nodeChoice;
//chooseNode is supposed to assign nodeChoice the next element in pathArray if the player on on the right path (if at nodeB, nodeChoice = nodeE).
//However, if the user has taken a different path, its cNodes will not be in pathArray in which case a random cNode is assigned to nodeChoice
function chooseNode(_node) {
//check each cNode to see if any are in pathArray
for (var j = 0; j < _node.cNodes.length; j++) {
//if a cNode is in pathArray, then we know to assign it nodeChoice...
if (_node.cNodes[j] in pathArray) {
nodeChoice = _node.cNodes[j];
console.log("choiceNode CORRECT: " + nodeChoice.name); //(for debugging purposes only)
}
//...otherwise don't do anything in this forLoop/ifStatement
};
//if by this point nodeChoice is still undefined, meaning none of the current node's cNodes are in pathArray, assign it any one of its cNodes.
if (nodeChoice == undefined) {
nodeChoice = _node.cNodes[Math.floor(Math.random()* _node.cNodes.length)];
console.log("choiceNode INCORRECT: " + nodeChoice.name);//(for debugging purposes only)
};
};
//Runtime:
chooseNode(nodeB);
//Result should be only nodeE.name since nodeD is not in the pathArray...
console.log(nodeChoice.name);
</script>
...however, nodeChoice is assigned either D, E or F randomly and we are given the troubleshooting statement "choiceNode INCORRECT: D (or) E (or) F", indicating that the if-in statement is always ignored. I know that the if-in statement doesn't work but am not sure how else to write it so that each cNode is compared the each element in pathArray, both of which can be of variable lengths... Code: window.onload = initForms;
function initForms(){
for(var i=0; i<document.forms.length; i++){
document.forms[i].onsubmit = function(){
return validForm();
}
}
}
Hi, this is the first part of a long code and I have three questions wondering if anyone could help me.. 1. What is the benifit of having the above code with "window.onload" and "for loop" and loop through the forms if I only have ONE form in html? 2. What is this line of code "document.forms[i].onsubmit" saying? Does it mean "Execute function() when submit button within form[i] has been pressed?" 3. function() - Does this empty function mean "run every following function below"?? Thank you!! Ok, I'm nearly pulling my hair out with this one. I have been looking at this code for two evenings now, and rewrote it 4 times already. It started out as jQuery code and now it's just concatenating strings together. What I'm trying to do: Build a menu/outline using unordered lists from a multidimensional array. What is happening: Inside the buildMenuHTML function, if I call buildMenuHTML, the for loop only happens once (i.e. only for 'i' having a value of '0'.) If I comment out the call to itself, it goes through the for loop all 3 times, but obviously the submenus are not created. Here is the test object: Code: test = [
{
"name" : "Menu 1",
"url" : "menu1.html",
"submenu" : [
{
"name" : "menu 1 subitem 1",
"url" : "menu1subitem1.html"
},
{
"name" : "menu 1 subitem 2",
"url" : "menu1subitem2.html"
} ]
},
{
"name" : "Menu 2",
"url" : "menu2.html",
"submenu" : [
{
"name" : "menu 2subitem 1",
"url" : "menu2subitem1.html"
},
{
"name" : "menu 2subitem 1",
"url" : "menu2subitem1.html"
} ]
},
{
"name" : "Menu 3",
"url" : "menu3.html",
"submenu" : [
{
"name" : "menu 3 subitem 1",
"url" : "menu3subitem1.html"
},
{
"name" : "menu 3 subitem 1",
"url" : "menu3subitem1.html"
} ]
}
];
Here is the recursive function: Code: function buildMenuHTML(menuData,level) {
var ul;
if (level == 1) {
ul = "<ul id='menu'>";
} else {
ul = "<ul class='level" + level + "'>";
}
for (i = 0; i < menuData.length; i++) {
menuItemData = menuData[i];
ul += "<li>";
ul += "<a href='" + menuItemData.url + "'>" + menuItemData.name + "</a>";
if (typeof menuItemData.submenu != 'undefined') {
ul += buildMenuHTML(menuItemData.submenu,level + 1);
}
ul += "</li>";
}
ul += "</ul>";
return ul;
}
Here is how the function is called initially: Code: buildMenuHTML(test,1); This is it's return value (with indentation added for readability): Code: <ul id='menu'>
<li><a href='menu1.html'>Menu 1</a>
<ul class='level2'>
<li><a href='menu1subitem1.html'>menu 1 subitem 1</a></li>
<li><a href='menu1subitem2.html'>menu 1 subitem 2</a></li>
</ul>
</li>
</ul>
'Menu 2' and 'Menu 3' don't show up! I'm sure it's something small that I'm overlooking, but any help would be appreciated. Hello... Thanks for reading... I am getting an undefined error when i try to get a value from this array in the interior loop... Code: // This is the array I am trying to access AuditTable [0] = ["Visio Modifed date","Word Modified Date","User Status","User Comment","Last Audit","Audit Status","Audit Comment"] AuditTable [1] = ["11/23/2009 8:52:18 AM","missing","OK","user comment number 1","1/1/2009","ok","audit comment number 1"] AuditTable [2] = ["11/24/2009 12:21:19 AM","missing","Out of Date","Changes from 2008 not implemented","1/2/2009","Out of Date","needs update"] AuditTable [3] = ["11/22/2009 9:24:42 PM","missing","Incomplete","Document doesnt cover all possibilities","1/3/2009","Inadequate","needs update"] I have hard coded values and had success such as: Code: data = AuditTable[1][0] But when I put the vars associated with the loop in I get an undefined error - AuditTable[i] is undefined: Code: // produces error data = AuditTable[i][j] //Works but retrieves wrong data data = AuditTable[j][i] //Works but retrieves wrong data data = AuditTable[1][i] //Works but retrieves wrong data data = AuditTable[j][2] I must be trying to access the array incorrectly or something... I have defined all the vars, and tried many combinations, alerted the values of both vars so I can prove it is not a scope issue... Am I missing something obvious? Thanks much... Code: var reportArray=new Array();
var reportData, title, subTitle, data;
for(i in parmarray)// loop thru AuditTable array and get values
{
title = '<div style="font-family:verdana; font-size:14px; font-weight:bold; margin:25px 0px 5px 30px">';
title += namearray[i][0];
title += '</div>';
reportArray.push(title);//Take compiled variable value and put it into array
for(j=0; j < AuditTable[0].length; j++)// loop thru AuditTable array and get values
{
subTitle = AuditTable[0][j];//points to first row of AuditTable where the labels are
data = AuditTable[1][0];//points to the current row where actual data is
html = i + j +'<div style="font-family:verdana; font-size:12px; color:#696969; font-weight:bold; margin-left:30px;">';
html += subTitle;
html += '</div><div style="font-family:verdana; font-size:12px; color:#a9a9a9; margin-left:30px; margin-bottom:10px">';
html += data;
html += "</div>";
reportArray.push(html);// put results into array
}
}
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