JavaScript - For Loop Wont Loop?

I have the following code which is almost completely working the way I need it to with the exception of the "downloadFile" value...

Code:

/*Regex list of download file extensions, pipe and backslash delimited. Looks for the period before the file type so it will work on download links with query parameters after it */
var downloadTypes = /\.pdf|\.doc|\.xls|\.zip|\.csv|\.ppt|\.rtf|\.pptx|\.docx|\.xlsx|\.wmv|\.mpg|\.exe|\.mp3|\.rar|\.wav/i; 

/*Regex list of on-site domains, pipe and backslash delimited. */
var onsiteDomains = /\mytestdomain1\.com|\mytestdomain2\.com|javascript|#/i; 

/*Used to unobtrusivly add events to objects*/
function unobtrusiveAddEvent (element,event,fn) {
   var old = (element[event]) ? element[event] : function () {};
   element[event] = function () {fn(); old();};
}

var links = document.links;
if ( links ){
	for(var i=0; i<links.length; i++) {
		if( links[i].href.match(downloadTypes) ){
		unobtrusiveAddEvent( links[i], 'onclick' , function() { ntptEventTag('ev=download&eventPage=Download From: ' + escape( wa.currentDomain + wa.currentURL ) + '& downloadFile=' + escape( links[i] ) ); });
		}
		if( !links[i].href.match(onsiteDomains) ){
		unobtrusiveAddEvent( links[i], 'onclick' , function() { ntptEventTag('lk=1&ev=Exit Link'); });
		}
	}
}

...how do I grab the value of the href that was just clicked? links[i] is not working (it's just grabbing the href value of the last href in the loop). I am missing something simple for sure. Can anyone point out what I am missing?

Thanks!

Hi All,

im trying to to use a for loop to loop through a drop down list of users and if there is a match between the user logged in and the drop down list i want to enable two fields, if the user logged in isnt in the drop down list i want to disable the two fields,

but im having trouble looping through, iv tried ".value" with no avail.. heres my Script

Code:

            var RequestingUser = document.getElementById('JoinersLeaversContent_cmbRequestingUser').text;
            var Authorisers = document.getElementById('JoinersLeaversContent_ddlAuthoriseId');
            for (var i = 0; i < Authorisers.length; i++) 
            {
                if (RequestingUser.text == Authorisers.value) {
                    document.getElementById('JoinersLeaversContent_txtAuthoriserSig').disabled = false;
                    document.getElementById('JoinersLeaversContent_txtDateSignedOff').disabled = false;
                }
                else 
                {
                    document.getElementById('JoinersLeaversContent_txtAuthoriserSig').disabled = true;
                    document.getElementById('JoinersLeaversContent_txtDateSignedOff').disabled = true;            
                }
           }

So just to be clear, if the user logged in appears in the drop down box i want to enable the two fields, if they dont appear i want to disable the two fields

Please help.

Thank you

For those who read my other thread I finally scratched together the code to take a value from an XML file and add it to a select box as an option. Ofcourse it only does it once so I need to loop it. It's kinda complex though, here's a function line to add one option:
addOption(document.people_form.People,name2,office2)

And here's the code in the head:

<script type="text/javascript">
//load xml file
if (window.ActiveXObject){
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false; //Enforce download of XML file first. IE only.
}
else if (document.implementation && document.implementation.createDocument)
var xmlDoc= document.implementation.createDocument("","doc",null);
if (typeof xmlDoc!="undefined")
xmlDoc.load("namedata.xml");

//Regular expression used to match any non-whitespace character
var notWhitespace = /\S/

function getnames(){
//Cache "messages" element of xml file
var nameobj=xmlDoc.getElementsByTagName("list")[0]

//REMOVE white spaces in XML file. Intended mainly for NS6/Mozilla
for (i=0;i<nameobj.childNodes.length;i++){
if ((nameobj.childNodes[i].nodeType == 3)&&
(!notWhitespace.test(nameobj.childNodes[i].nodeValue))) {
// that is, if it's a whitespace text node
nameobj.removeChild(msgobj.childNodes[i])
i--
}
}
}

if (typeof xmlDoc!="undefined"){
if (window.ActiveXObject) //if IE, simply execute script (due to async prop).
getnames()
else //else if NS6, execute script when XML object has loaded
xmlDoc.onload=getnames
}
var name2=xmlDoc.getElementsByTagName("name")[0].firstChild.nodeValue;
var office2=xmlDoc.getElementsByTagName("office")[0].firstChild.nodeValue;
var officePH2=xmlDoc.getElementsByTagName("officePH")[0].firstChild.nodeValue;
var mobile2=xmlDoc.getElementsByTagName("mobile")[0].firstChild.nodeValue;
var email2=xmlDoc.getElementsByTagName("email")[0].firstChild.nodeValue;
</script>
<script type="text/javascript">
function addOption(selectbox,text,value )
{
var optn = document.createElement("OPTION");
optn.text = text;
optn.value = value;
selectbox.options.add(optn);
}
</script>



Could anyone give me a pointer on how to loop this so that it loads one option after another from the XML file? Thanks.

Hello all.

I am faitly new at programming and have run into a little problem.

I want to create a script that creates 2 random numbers, stored in 2 different variables and then compare them to eachother.

there is two possible outcome of that comparison, either they are different or they are alike.

If they are different i want to randomize a new set or numbers and make a other comparement, also to keep track on how many times i have created numbers.

If they are alike i want to display the numbers and how many tries it took to get a matching pair.


atm it looks like this

<html>
<body>
<script>
var x=(Math.floor(Math.random()*6)+1);
var y=(Math.floor(Math.random()*6)+1);
//creates two random int between 1 and 6
var throws = 1;
//keep tabs on how many times we have thrown the dices

if(x!=y)
{
x=(Math.floor(Math.random()*6)+1);
y=(Math.floor(Math.random()*6)+1);
throws=throws+1
}else{
document.write("you have rolled a pair. Dice 1 is: " +x +" and Dice 2 is: " +y +" and it took " +throws +" tries to get a pair.");
}

</script>
</body>
</html>


How to get that into a loop?

a really confused newbie scripter

I have a form that shows or hides divs based on what is chosen in a dropdown.

There are 4 divs but only one is shown and the other 3 hidden based on dropdown selection.

Inside each div are checkboxes with items for sale.

I want to reset the checkboxes to unchecked and the line total values to 0 if the div is hidden. I've got the checkboxes to reset but I can't figure out how to set the line total values to 0 (There are 14 total so I'm trying to loop thru all of them and reset them.)

This is what I have in the loop

Code:

	for (var i = 0; i < form.elements.length; i++ ) {
		if (form.elements[i].type == 'checkbox') {
			form.elements[i].checked = false;
 		}
	}
	 // set line_totals to 0
	 for (var j = 0; j< form.elements.length; j++ ) {
		if (form.elements [j].name.substring(0,10) == 'line_total') {
			form.elements[j].value = '';
 		}
	}

Hey guys i've just been following a few tutorials and learnt how to do a for loop and a while loop, what is the major difference between the two? they seem quite similar? I know while loops are laid out a hell of a lot easier in my opinion!

Hello, I recently purchased a JavaScript book, and I am confused by one of it's examples. I was wondering if anybody could answer my question.

Here is the example:

for (loopCounter = 1; loopCounter<= 3; loopCounter++)
{
//execute this code
}

Now, what I need help with is the variable part.

The book goes on to say: ""To keep track of how many times you have looped through the code, you need a variable to keep count"

My question is: Why does the variable have the value of one and not another number?

I'm very very new to JS, I understand that the loopCounter has to be les than or equal to 3 for the code to execute, and also that it is incremented by one each loop, but the book is not clear on why the value of the variable has been set to 1.

If anybody could answer this question I would be very grateful, I hate moving onto the next stage of a book if I do not completely understand the previous topics.

Thank you in advance

apparently this is supposed to be a loop...
I got it off another topic here and it made NOOOO sense

Code:

//dandavis's ES5 Array methods:
(function ArrayMethods(){var o=Array.prototype,it,i,
  e=eval('( {map:Z0,r=[];for(;i<m;i++){if(i in t){r[i]=a.call(b,t[i],i,t);}}return r;},filter:Z0,r=[],g=0;for(;i<m;i++){if(i in t&&a.call(b,t[i],i,t)){r[g++]=t[i];}}return r;},every:Z0;return m&&t.filter(a,b).length==m;},some:Z1;for(;m--;){if(m in t&&a.call(t,t[m],m,t)&&!--i){return true;}}return false;},lastIndexOf:Zb||-1;for(;m>i;m--){if(m in t&&t[m]===a){return l;}}return-1;},indexOf:Zb||0;for(;i<m;i++){if(i in t&&t[i]===a){return i;}}return-1;},reduce:Z0,r=b||t[i++];for(;i<m;i++){r=a.call(null,r,t[i],i,t);}return r;},reduceRight:Zm-1,r=b||t[i--];for(;i>-1;i--){r=a.call(null,r,t[i],i,t);}return r;},forEach:function(a,b){this.concat().map(a,b);return this;}})'.replace(/Z/g,"function(a,b){var t=this.concat(),m=t.length,i="));for(it in e){i=o[it];o[it]=i||e[it];}
}());//end ArrayMethods()

someone want to explain it to me?

here is some more

Code:

(function(){var o=Array.prototype,it,i,e={
	map:function(a,b){var t=this.concat(),m=t.length,i=0,r=[];for(;i<m;i++){if(i in t)r[i]=a.call(b,t[i],i,t)}return r},
	filter:function(a,b){var t=this.concat(),m=t.length,i=0,r=[],g=0;for(;i<m;i++){if(i in t&&a.call(b,t[i],i,t)){r[g++]=t[i]}};return r},
	every:function(a,b){var t=this.concat(),m=t.length,i=0;return m&&t.filter(a,b).length==m},
	some:function(a,b){var t=this.concat(),m=t.length,i=1;for(;m--;){if(m in t&&a.call(t,t[m],m,t)&&!--i){return!0}}return!1},
	lastIndexOf:function(a,b){var t=this.concat(),m=t.length,i=b||-1;for(;m>i;m--){if(m in t&&t[m]===a){return l}}return-1},
	indexOf:function(a,b){var t=this.concat(),m=t.length,i=b||0;for(;i<m;i++){if(i in t&&t[i]===a){return i}}return-1},
	reduce:function(a,b){var t=this.concat(),m=t.length,i=0,r=b||t[i++];for(;i<m;i++){r=a.call(null,r,t[i],i,t)}return r},
	reduceRight:function(a,b){var t=this.concat(),m=t.length,i=m-1,r=b||t[i--];for(;i>-1;i--){r=a.call(null,r,t[i],i,t)}return r},
	forEach:function(a,b){this.concat().map(a,b)}
};for(it in e){i=o[it];o[it]=i||e[it]}}()); //end Array.16 injection

it has something to do with eval... whats eval?

sigh I hate arrays this is so confusing to try and read ><

I need the rolling and the displaying in a loop and i am clueless. If anyone could help it would be much appreciated.






<html>
<head>
<title> Die Rolls </title>
<script type="text/javascript" src="http://balance3e.com/random.js">
</script>
<script type="text/javascript">
function RollDice()
{
var roll1, roll2, roll3, roll4, roll5;

roll1 = RandomInt(1, 6);
roll2 = RandomInt(1, 6);
roll3 = RandomInt(1, 6);
roll4 = RandomInt(1, 6);
roll5 = RandomInt(1, 6);

document.getElementById('die1Img').src =
'http://balance3e.com/Images/die' + roll1 + '.gif';
document.getElementById('die2Img').src =
'http://balance3e.com/Images/die' + roll2 + '.gif';
document.getElementById('die3Img').src =
'http://balance3e.com/Images/die' + roll3 + '.gif';
document.getElementById('die4Img').src =
'http://balance3e.com/Images/die' + roll4 + '.gif';
document.getElementById('die5Img').src =
'http://balance3e.com/Images/die' + roll5 + '.gif';

document.getElementById('rollSpan').innerHTML =
parseFloat(document.getElementById('rollSpan').innerHTML) + 1;
}
</script>
</head>

<body bgColor="lime">
<div style="text-align:center">
<p>
<img id="die1Img" alt="die image"
src="http://balance3e.com/Images/die1.gif">
<img id="die2Img" alt="die image"
src="http://balance3e.com/Images/die2.gif">
<img id="die3Img" alt="die image"
src="http://balance3e.com/Images/die3.gif">
<img id="die4Img" alt="die image"
src="http://balance3e.com/Images/die4.gif">
<img id="die5Img" alt="die image"
src="http://balance3e.com/Images/die5.gif">
</p>
<input type="button" value="Click to Roll" onclick="RollDice();">
<hr>
<p>
Number of rolls: <span id="rollSpan">0</span>
</p>
</div>
</body>
</html>

I have a dice rolling function.
The user enters the number of sides, and the dice rolls 36000 times.
I track the results, and then display the percentages of each number being rolled as well.

I have it to where it displays but only for ONE die ( eg : a 5 sided die, it only displays up to 5, and not 10 )
But the function is rolling for both die, just not displaying.

I'm thinking I need to change, in the rollDice function, <=d.side to <=rolled_value, but whenever I do this, I get NaN errors.

Any help would be appreciated!

Code:

<script type="text/javascript">

    function Die(side) {
        this.side = side;
        this.roll = function () {
            var result;
            result = parseInt(((Math.random() * 1000) % this.side) + 1 );
            return result;
        } 

	
// <![CDATA[

	this.validateNum = function (side) {
	if (side > 1 && side < 101)
	return true;
	else
	return false;
	}

	
}
	

    function rollDice() {
        var d = new Die(document.getElementById('number').value);
		

			
		if (d.validateNum(d.side) == true) {
		var numCount = new Array(d.side);
		var percent;
		var rolled_value;

		for (var i=1; i<=d.side; i++)
		numCount[i] = 0;
		for (var j=0; j<36000; j++) {
		rolled_value = d.roll() + d.roll();
		numCount[rolled_value] = numCount[rolled_value] + 1;
		}
		for (var k=1; k <= d.side; k++)
		document.writeln("Number of" + " " +  k +"'s" + " " +	 "rolled" + ' : ' + numCount[k] + '<br/>' );
		
		for (var l = 1; l <= d.side; l++) {
		percent = new Number(parseFloat(numCount[l] / 36000) * 			100).toFixed(2);
		document.writeln("Percentage of" + " " + l + " " + "being rolled" + ' : ' + percent + '% <br/>');
		}
		} 
		
		
//]]>

So this is what I have so far:
Code:

import java.util.Random;

public class lotteryGame
{
  public static void main(String args[]) throws Exception
 {
 int n=0; // counter for the amount of times played
 int t=0; // total amount of winnings
 int i=0; // number of matches
 int a; // first guess
 int b; // second guess
 int c; // third guess
 int d; // first number in the lottery
 int e; // second number in the lottery
 int f; // third number in the lottery
 Random rand = new Random();

while (n<100) // play the game for 100 times
{
 a=rand.nextInt(9) + 1; // assign a random number to a
 b=rand.nextInt(9) + 1;
 c=rand.nextInt(9) + 1;
 System.out.println("Lottery Number"+a+b+c);
 d=rand.nextInt(9) + 1;
 e=rand.nextInt(9) + 1;
 f=rand.nextInt(9) + 1;
System.out.println("Your guess"+d+e+f);
 if (a==d){
  i=i+1;
  System.out.println(a+"is a match");
  d=d+10; // if a=d then d is taken out of the range (1-9)
 }
 else if (a==e){
   System.out.println(a+"is a match");
  i=i+1;
  e=e+10;
 }
 else if  (a==f){
   System.out.println(a+"is a match");
  i=i+1;
  f=f+10;
 }
 if (b==d){ 
   System.out.println(b+"is a match");
  i=i+1;
  d=d+10;
 }
 else if (b==e){
   System.out.println(b+"is a match");
  i=i+1;
  e=e+10;
 }
 else if  (b==f){
   System.out.println(b+"is a match");
  i=i+1;
  f=f+10;
 }
 if (c==d){ 
   System.out.println(c+"is a match");
  i=i+1;
  d=d+10;
 }
 else if (c==e){
   System.out.println(c+"is a match");
  i=i+1;
  e=e+10;
 }
 else if  (c==f){
   System.out.println(c+"is a match");
  i=i+1;
  f=f+10;
 }
 if (i==3){
   if (a==d-10&&b==e-10&&c==f-10){
   t=t+10000;
   System.out.println("You win!!!");
   }
   else{ 
   t=t+1000;
   System.out.println("You had 3 matches! You win $1000");
   }
 }
 if (i==2){
  t=t+50;
  System.out.println("You had 2 matches! You win $50");
 }
 if (i==1){
   
  t=t+10;
  System.out.println("You had 1 match! You win $10");
 }
}

n=n+1;
i=0;
 }
}

I don't know what is wrong with the program, It compiles fine but when I run it, it never stops. =/
I figure that Code:

n=n+1

would be a counter to stop the while loop. Where do I place it so it can count everytime it runs. Or, What do I need to add in order for the program to stop running after 100 times?
Thank You. =]

Hi all,
The following code is an assigment.I have it running with out any errors.It has to take the array (arrayToshuffle) and through running though the end of the (arrayToshuffle) the string has to be shuffled.We havent learnmt shuffle() yet.)
I think the problem is these lines.
arrayToShuffle[index]=arrayToShuffle[swapIndex]; arrayToShuffle[swapIndex]=arrayToShuffle[index];
But no matter what varibles I put in these lines and how much i fiddle I carnt seem to get it to run without repeating the same elements in the output.
I dont want anyone to fix it for me just advise on where I could look for problems.
Am i missing somthing here?
Heres the program if you run it you will see what I mean.


<html>
<head>
<script>
var arrayToShuffle = new Array('Ace','2','3','4','5','6','7','8','9','10','Jack','Queen','King');
var arraySize = arrayToShuffle.length;

document.write('<h1>Array shuffling</h1>');
document.write('<p>Before shuffle: '+arrayToShuffle+'</p>');

SWAPS_TO_MAKE = 30;


var index=0;
var self_swaps=0;
var counter = 0;

while(counter < SWAPS_TO_MAKE)
{
var swapIndex = Math.floor(Math.random()*arraySize+1);
arrayToShuffle[index]=arrayToShuffle[swapIndex];
arrayToShuffle[swapIndex]=arrayToShuffle[index];
if(index =swapIndex) {
self_swaps++;
}
counter++;
index = (index+1 % arraySize);
}

document.write('<p>After shuffle: '+arrayToShuffle+'</p>');
document.write('<ul>');
document.write('<li>Swaps made: '+SWAPS_TO_MAKE+'</li>');
document.write('<li>Self swaps: '+self_swaps+'</li>');
document.write('<li>Effective swaps: '+(SWAPS_TO_MAKE-self_swaps)+'</li>');
document.write('<li>Effective rate: '+((SWAPS_TO_MAKE-self_swaps)/SWAPS_TO_MAKE)+'</li>');
document.write('</ul>');

</script>
</head>
<body>

</body>
</html>

Thanks heaps
Shayne Darcy

I like to figure out in my ready made For Loop
it out puts a list of names and amounts

I want to figure out how to put in a colour scheme.

such as having every second row in yellow highlight?

here is my code

Code:

<title>The Lighthouse</title>
<link href="lhouse.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="list.js"></script>

<script type="text/javascript">
total=0;
for (var i=0; i<amount.length; i++)
	{
	total=total+amount[i];
	}
document.write(total);
</script>
</head>

<body>

<div id="title">
   <img src="logo.jpg" alt="The Lighthouse" />
   The Lighthouse<br />
   543 Oak Street<br />
   Delphi, KY &nbsp;&nbsp;89011<br/>
   (542) 555-7511
</div>
<div id="data_list">
<script type="text/javascript">
document.write('<table'+' border="1"'+' rules="row"'+'cellspacing="0">'+'<tr>'+'<th>Date</th>'+'<th>Amount</th>'+'<th>First Name</th>'+'<th>Last Name</th>'+'<th>Address</th>'+'</tr>');
for (var i=0; i<date.length; i++){	
	document.write('<tr>'+'<td>'+date[i]+'</td>'+'<td>'+amount[i]+'</td>'+'<td>'+firstName[i]+'</td>'+'<td>'+lastName[i]+'</td>'+'</tr>');}
</script>
</table>
</div>

Any suggestions on how to add the colour within the loops

Hello,

I need to do this. I have 36 Divs called "contenido1, contenido2, contenido3 etc.)

And I want that "onclick" change a property of the css of all of them except 1. I know I can do this manually but its a lot of code lines so I think it would be another option to do ir in a loop.

Right now i am using this:

Code:

div = document.getElementById('contenido1');
div.style.display='block';
div = document.getElementById('contenido2');
div.style.display='none';
div = document.getElementById('contenido3');
div.style.display='none';
div = document.getElementById('contenido4');
div.style.display='none';
....

So in that case I want for example that all the DIVS called "contenido 2 to contenido 36" display: none and only contenido 1 display block. In the next cases would be the same: All the divs called "contenido 1 to contenido 36" display: none except "contenido 2" that i want to display: block.

So I can do it like this but are thousands of lines of code... and I am sure there are other more efficient option.

Anybody knows how to do that? Probably is a simple question.

Thank you!!

Hi friends

i have a gridview with id gvcustomers...it has tow columns latitudes and longitudes

i want to loop thoiugh the gridview on the client side and get the values

like this...but the problem i have is mentioned in the comments below


var theGridView = document.getElementById('<%=gvCustomers.ClientID%>');

for (var rowCount = 1; rowCount < theGridView.rows.length; rowCount++) {


/// the numbers in the array are lats and longs which are hard //coded...this where i want the latitude and longitude colmn to come..
var latlongs = new Array(new VELatLong(45, -110), new VELatLong(45, -114), new VELatLong(45, -90), new VELatLong(45, -95));



// }

How can i achieve this...thank you

akpaga
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Posts: 167
Joined: Wed May 27, 2009 4:15 pm

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