JavaScript - Count The Number Of Visble Elements With A Class

Hola,

I have a problem where I have a number of random set of elements that have a fixed rule for class name. I want to move them to a container element according to this class name.

So for example the site generates
Code:

<p class="dog-1"></p>
<p class="dog-2"></p>
<p class="cat-1"></p>
<p class="dog-3"></p>

My output would be ideally
Code:

<div class="dog">
   <p class="dog-1"></p>
   <p class="dog-2"></p>
   <p class="dog-3"></p>
</div>

<div class="cat">
   <p class="cat-1"></p>
</div>

When searching for a solution, all I could find was simple ordering of elements according to class...
Thanks

I have a function below where every time a question is submitted, it will add a new row in the table with a textbox which allows numbers entry only. My question is that I don't know how to code these features in this function:

1: I want the text box to be between 0 and 100, so if text box contains a number which is above 100, it will automatically change the number to the maximum number which is 100.

Does any one know how to code this in my function below in javascript:

Code:

function insertQuestion(form) 
    {   
    
         var row = document.createElement("tr");
         var cell, input;
    
    cell = document.createElement("td");
         cell.className = "weight";
         input = document.createElement("input");
         input.name = "weight_" + qnum;
         input.onkeypress = "return isNumberKey(event)";
         cell.appendChild(input);
         row.appendChild(cell);
    }

When I used toFixed() method on a number, I thought that this method round a number to a specified approximation, but I got a surprising result, the number became string!
15.23689 .toFixed ( 2 ) ==> "15.24"
So does it convert the number into string?

I am trying to figure out how to make a random number I can plug into a script count down from that number at certain times of the day until it reaches 0. I would like it to reset itself at midnight every day. I'm trying to make it work with a script I found on here that resets itself at midnight every day. So instead of it counting down too fast, it would count down to the next number after a randomly generated number of minutes until it reaches 0. But it wouldn't necessarily have to end at 0 at midnight. It could go from 845 to 323 at the end of the day at a slower pace. Is that possible?

Hello,
I am new with Javascript and running into this problem that I don't understand.

I define a base class that only contains an array "elements", and a derived class that contains nothing more (for simplicity):

Code:

  function baseClass() {
     this.elements = new Array;
  }

  function derivedClass() {
  }
  derivedClass.prototype = new baseClass;

Then I create two instances of the derived class, and add two elements in each:

Code:

   a = new derivedClass();
   a.elements.push("A");
   a.elements.push("B");

   b = new derivedClass();
   b.elements.push("C");
   b.elements.push("D");

When I examine the contents of these arrays, I see that both a.elements and b.elements contain {"A","B","C","D"} ! I.e. as if the two arrays are in fact the same array! But these are two separate instances of the class, I expect two separate arrays.

Note that if instead I use the base class:

Code:

   a = new baseClass();
   a.elements.push("A");
   a.elements.push("B");

   b = new baseClass();
   b.elements.push("C");
   b.elements.push("D");

then I get a.elements = {"A","B"} and b.elements = {"C","D"}, as I would expect.

Could someone explain to me the problem with using the derived class?

Thank you,
Stephanos

Hi,

I am not a Javascript programmer and I am facing some
barriers. Maybe some of you could help me.

I would need a script that can be used to count down until any given date with hour, minutes and seconds.

For example:

Quote:
September 10, 2009 16:02:00
Bob Kuspe

I've been looking everywhere for a script that counts up from 1 to 10, but can't find anything. I even searched the forums.

Basically just something that starts from 1 and then replaces itself with 2, and so on.

Thanks!

Deleted

hi

i am new to javascript. i make a mcq quiz website in one of server side script. now for that website i want to make count down timer so when that quiz starts the user will have 5 minutes to complete that quiz if use does not able to complete quiz in given time then quiz should disable and shows the user score

how can i achieve this

I would like to count how many duplicate values I have in an array.

My below attempt doesnt count the duplicate values:

Code:

var ct = 0;

for(var i = 0;i < myArray.length;i++)
{
     var myData = getData[i].city;
    
     if(myData == myData)
     {
          ct++;
     }
     alert("Total Count = " + ct);
}

Please advise the best way to do this.

Hi,

I want to do a redirect count so that the user can see the count going down. for example, I want them to be able to see the following.

You will be redirected in 5 seconds.

The user should be able to see the count going down from 5 to 4 to 3 to 2 to 1 and then they are redirected.

I can get the page to redirect after 5 seconds but I want the user to be able to see it count down.

Thanks in advance for your help

Hi Guys,

I have a javascript, which counts the specified words..

I want javascript to count some of the html tags and symbols when i enter a html code in the textarea..

- the below searchwords are not functioning properly.
http://(space)
http:/(space)
etc... (no spaces are searching)

- www. (.(dot) is not searching, also when i enter wwww(4 times) in the textarea it shows www. as count 1)

- i can't enter the below symbols in searchwords array
[
<
'
?

I thank once again Bullant for helping me on the below script...
But i am trying to fix my above issue and i couldn't.. :(

Please help me out guys...

Here is my Code...
Code:

<html>
<head>
        <title>Word Count</title>
<script type = "text/javascript">
            function searchForWords(){
                document.getElementById('resultsContainer').innerHTML = '';
                var txt = document.getElementById('txtMsg').value;
                var strWords = document.getElementById('txtSearchWords').value;
                var searchWordsTokens = strWords.split(' ');
                var searchWords = ['href','LINK_ID','mailto','src="','src= ','src =','.jpg','.gif','.png','www','www.','http','http:// ','http:/ ','http: ','http ',' http',' "','@','amp;','TBD'];
                for(i=0; i < searchWordsTokens.length; i++){
                    if(searchWordsTokens[i].length > 0){searchWords.push(searchWordsTokens[i]);}  //remove spaces between words
                }
                var results = [],matches;
                for(i=0; i < searchWords.length; i++){
                    var regex = new RegExp('\\b'+searchWords[i]+'\\b','gi');
                    matches = txt.match(regex);
                    results[searchWords[i]] = (matches)? matches.length : 0;
                }
                //output results
                var str = '';
                for(var i in results){
                    str += i+'--'+results[i]+'<br />';
                }
                document.getElementById('resultsContainer').innerHTML = str;
            }
            window.onload=function(){
                document.getElementById('form_submit').onclick=searchForWords;
            }
        </script>
</head>
    <body>
<table>
<tr><td align="center">
	<form id="contact_form"><h4>Paste your HTML Code he </h4>
        <p><label class="form_label" for='message'></label>
            <textarea rows="20" cols="60" id="txtMsg"></textarea>
        </p>
		<div>
           <input type="text" id="txtSearchWords"/>
        </div>
        <p><input id='form_submit' type="button" value="Check for Counts"></p>
		<div><p><input id='form_submit' type="reset" value="Clear"></p></div>
        <div id="resultsContainer"></div>
		</form><br /></td>
		</table>
    </body>
</html>

Hello all i'm stuck on the last part of my program. Basically it will generate the score and players position but it will no show the following:

I'm also having trouble stopping the loop from going over 80

Now add code to your program which will:
! declare and initialise a variable to keep count of how many goes the player
takes to get out;
! add one to this count every time the loop is repeated;
! write out the count in a suitable message at the end.

Any help is very much appreciated.

[CODE]

var countMoves = 0;

while (playersPosition <80)
{
playersScore = rollDie();
document.write('Sco ' + playersScore);

playersPosition = playersScore + playersPosition;

document.write(' squa ' + playersPosition);

indexOfNumber = findIndexOf(playersPosition, specialSquaresArray);

if (indexOfNumber != -1)
{
document.write(' ladder to square ' + connectedSquaresArray[indexOfNumber]);
document.write('<BR>');
document.write('Sco ' + playersScore);
playersScore = connectedSquaresArray[indexOfNumber] + playersScore;
document.write(' squa ' + playersScore);
playersPosition = playersScore;
}
document.write('<BR>');
}

for (count =1; count <=array.length; count = count + 1)
if(array[count] > array[countMoves])
{
countMoves = count;
}
document.write('it took ' + indexOfNumber + 'goes to get out');
[CODE]

I'm trying to make a count-up timer that counts to 100 or 1000 then adds 1 to another number.
i would like the timer speed to be adjustable if possible...i'm kinda new to javascript so any help with this would be appreciated.