JavaScript - Toprecision - No Integer Allowed

Hi, I'm currently using some javascript to hide and unhide div's.

I've been messing around and searching about trying to find something which will only allow one of the hidden div's open at a time. When a new link is clicked, the last div open closes. Unfortuanatly I haven't found anything yet, so I am wondering if anyone on this board can help please?

The script I am using is:

Code:

<script type="text/javascript">
function unhide(divID) {
  var item = document.getElementById(divID);
  if (item) {
    item.className=(item.className=='hidden')?'unhidden':'hidden';
  }
}
</script>

<style type="text/css">
.hidden {
	display: none; 
}

.unhidden { 
	display: block; 
}
</style>

and the mark-up:

Code:

<p><a href="javascript:unhide('test1');">Testing 1</a></p>

	<div id="test1" class="hidden">
		<p>Testing :)</p>
	</div>

<p><a href="javascript:unhide('test2');">Testing 2</a></p>

	<div id="test2" class="hidden">
		<p>Testing again :)</p>
	</div>

I hope I have been clear, appreciate any help given.

Hi all,

this is my first post to this great useful forum.

I have a javascript 2d array [x,y] that contains integer values like this:

[0,0], [0,1], [0,2], [0,3],
[1,0], [1,1], [1,2],
[2,0], [2,1], [2,2],
[0,-1], [0,-2], [0,-3],
[1,-1], [1,-2],
[2,-3]

my question is how to get the max,min y value for each x.
for the sample above it should give me another array with the following results
[0,3],[0,-3],[1,2],[1,-2],[2,2],[2,-3]

your help is highly appreciated

Regards
Omran

Using Javascript / jQuery, I'm trying to produce a series of dropdowns ("<select>") that have their options filtered as the user selects from them.

For example:

DROPDOWNS
Field 1:
- value_1
- value_2

Field 2:
- value_3

Field 3:
- value_4
- value_5

COMBINATIONS
- value_1, value_3, value_5
- value_1, value_3, value_4
- value_2, value_3, value_5

When a user selects Field 3 - value_4, the unavailable options will be removed - ie, Field 1 - value_2 (there is no combination that allows value_2 and value_4 to be selected together).

I have an array of the allowed combinations like this (although I can tweak the structure if necessary):

Code:

var combinations = [["value_1", "value_3", "value_5"], ["value_1", "value_3", "value_4"], ["value_2", "value_3", "value_5"]];

When a option is changed all the current entries are removed and only the allowed combinations added back in.

Where I'm struggling is with how to find which combinations are acceptable based on what has already been selected. I'd really appreciate any pointers or just a fresh perspective on this because I seem to be going round in circles!

Thanks!

Does JavaScript have an easy of converting an ordinary integer like 135 into a time format like 02:15? I'm working on a timer that handles the backend with just a plain integer that counts down every second but it needs to output looking like a clock.

Hi all,

I am having a problem converting a physical string to a integer. I have a dropdown list of a few items but are numbers though in chracters. I ned to output the value and the text of the selected item. As I cannot use a if-else statement, any help would be great.

Code:

<select id="std_num" onchange="displayValue()">
            	<option value="Two">Two</option>
                <option value="Zero">Zero</option>
                <option value="Five">Five</option>
                <option value="Three">Three</option>
                <option value="Two">Two</option>
                <option value="Zero">Zero</option>
             </select>

Code:

function displayValue()
{
	alert(document.getElementById('std_num').value);
	var c = (document.getElementById('std_num').value);
}

OVERVIEW of main webpage:
when a user logs in, they will be directed to the main page of the website;
and will see images displayed according to a value that was stored in the database.

the main page preloads an image array:

Code:

<script type="text/javascript">
    var img_FILE = [    'images/house.png',
  		       'images/car.png', 
                        'images/boat.png'
	            ];
</script>

easy enough


the database holds a column of integers that are used to access the proper image in the array.
i can successfully pull the integer value i need from the db.

what i want to do is when the main page loads, i want the value that was pulled from the database to be used to display the correct image.

example:
lets say i pulled the value 2 from the db.
then i want to display img_FILE[2] on the main page when the page "loads".

Code:

<body>
    <div id="quadrantOne">
        <img id="firstImg" src="images/blankImg.png" width="190" height="235" />
        
        <script type="text/javascript">
            $.post('imageScript.php', 'data=0', function(data,status){
                 if (status == 'success')  {  imgValue = data     }
                 else	                  {  imgValue = 'error'  }
                 document.getElementById('firstImg').src=img_FILE[imgValue];
            });
        </script>
    </div>
</body>

i debugged imgValue and it is correctly assigned the value coming from the db.
but..........the image won't appear on the main page.
any ideas how to get this to work?

thanks,
Paul Williams

Hi, I was hoping you could help me, I was wanting to write text to the screen but without re-writing the whole screen (e.g. document.write();. I wish to take text and put it in a function, modify it, then display it.
So far I have:

Code:

<script type = "text/javascript">
		function calculate(text){
				var x = "10.0";
				var gpa = text.replace(/0.0/g,x);
				document.getElementById("text").innerText=gpa;				
			}
		</script>
		<p id = text >Your Grade Point Average (GPA) is: 0.0</p>
		<button type="button" onclick="calculate(text)">Calculate</button>

Your help would be really appreciated

Another homework assignment that I can't quite seem to get to work...

I've been asked to do the following using javascript:
-Create a function named randInt() with one parameter of "size". Declare a variable named "rNum" equal to a random integer between 1 and the value of the size variable. Return the value of the "rNum" varialbe from the function.

-Create a function named getQuote() with one parameter anemd "qNum". The function should create an array named mtQuotes with five quotes; there should be no quote for the array index "0". Return the value of the mtQuotes array for the qNum index.

- In the div element of "quotes" insert a script with the following commands: Declare a variable named "randValue" which is euqal to a random integer between 1 and 5 (use the randInt() function). Declare a variable named "quoteText" containing the quote whose array index value is equal to randValue. Write the value of quoteText to the web page.

Here is what I have...it returns undefined. thanks.

Code:

<html>
<head>

<script type="text/javascript">
function randInt(size) {
	var rNum=Math.ceil(Math.random()*5);
	return(rNum);
}
</script>


<script type="text/javascript">
	function getQuote(qNum);
	var mtQuotes = new Array();
	mtQuotes[0] = "";
	mtQuotes[1] = "I smoke in moderation, only one cigar at a time.";
	mtQuotes[2] = "Be careful of reading health books, you might die of a misprint.";
	mtQuotes[3] = "Man is the only animal that blushes or needs to.";
	mtQuotes[4] = "Clothes make the man. Naked people have little or no influence on society.";
	mtQuotes[5] = "One of the most striking differences between a cat and a lie is that a cat has only nine lives.";
	return mtQuotes[qNum];
</script>
</head>

<body>


     <div id="quotes">
	<script type="text/javascript">
        	var randValue=randInt(5);
	var quoteText=getQuote(randValue);
        	document.write(quoteText);
   	 </script>
   </div>

I have some asp:radiobutton lists that need to update a label with the sum of their values each time a user selects a new value. I am brand new to javascripting and would like some insight on how to get this done. I have inserted my code below.

Code:

<asp:Label runat="server" Text="Greeting:" />&nbsp;<asp:Label runat="server" ForeColor="Red" ID="lbl_GreetingScore" Text="0" />

<asp:RadioButtonList ID="rdb1_1" runat="server" RepeatDirection="Horizontal">
<asp:ListItem Selected="True" Text="N/A" Value="4" />
<asp:ListItem Text="Yes" Value="4" />
<asp:ListItem Text="No" Value="0" />
</asp:RadioButtonList>

Well I have an array and a button to select a random integer from the array, how do I make it so that it selects every integer once til all are selected, then it starts over again?

For example, an array has these:

A
B
1
2
Q
F

So you press the button a number of times, and you get:

Q
B
1
F
A
2

Instead of:

1
Q
A
1
B
A