JavaScript - Onclick Image Size Toggle

Hi there!

Okay, here is my scenario:

I have a link and a div on a webpage. With the link I want to toggle the content (HTML) of the div. On toggle, I want to load the content from a PHP-file and I want it to load on the toggle, not when the webpage originally loaded (to reduce loading time on the webpage itself).

The file that is loaded on toggle doesn't have to be PHP, but it would help a lot.

Does anybody know of a example of this or something similar to it? I have been looking for some time now, without any luck unfortunately.

Highly appreciate any help/answers/feedback!

Hi

Complete novice with Java so need some help please!

I want to put a button on a website that when clicked changes the background. The button needs to be an image.

For example, click on the image and it makes the background image1 and then click again to switch to background image2. The image/button that is being clicked will be 2 images (one says "turn lights on" then when clicked shows other image "turn lights off")

I have managed to pick up bits of code from the net that change the background and got another code that makes 2 images a toggle button. The button changes the background on the first click but no back again on the second click.

I guess it needs an if/else statement but not sure.

Thanks for any help!!!!

i have image button i need to display image .if the size of the image button is 100*100 and image size is 50*50 .the remaining space of the image button should be empty.the image should not stretch.

can any one guide me i am new to programming

Thanks in advance!!!

QUESTION 1:

Hello. I would like to know if this is possible with Javascript, and if yes, if someone can please provide me with the code or point me in the right direction.

Let me start of by saying that this is for an eBay listing. I know that they accept basic / limited javascript and if what I am asking is possible, I hope that it can work on eBay listings.

I would like to know if it's possible to determine the dimensions of an image with Javascript from an Image url, and to then resize it or not based on the the size of the image.

So, let's say this is the URL: www.adomainname.com/image.jpg

and let's say that image is 1400 px x 1400 px. I would first like the javascript code to detect that size. I also would like the maximum dimension for any side of the image to be 600 px. If both sides of the image are over 600 px, for both sides to be reduced proportionally to 600 px or lower. If any one side of the image is larger than 600 px, the image is to be resized to 600 px or lower. If both sides are under 600 px, the image is to not be reduced. It would also be nice if it can detect whether the image is portion or landscape based on I guess the larger side, because an image at 600 px in height might be too big, but in width might be o.k.

So, in this example (the 1400 px by 1400 px), the image is to be resized to 600 px x 600 px.

For an image that's 300 px x 500 px, it should remain as such.

For an image that's 400 px x 700 px, it should be resized to 400 / (700 / 600) px by 600 px, which is approximately 343 px x 600 px.

I have looked a bit into this and I see things being mentioned about the image being loaded first completely on the screen, or about using server side language like PHP, and so on, but like I said, keep in mind that this is for eBay, and so I am limited.

Note: The part that I am most interested in is in being able to detect the size / dimensions of the image.

QUESTION 2:

On a side note, does anyone know if it's possible to have a Javascript enlarging function for images, in which when one clicks on an image, it is enlarged, but either in a popup window that's smaller than the one behind it, and possibly centered, or by making the background go dark and then bringing up the enlarged image (is the latter done with Javascript; I have seen this effect for a while now and have always wondered.)

what it is essentially is a button on a larger image map that, upon pressing it, should toggle another image map as visible. the toggled image itself, has an x in the bottom corner, for dismissing it, but of course, needs to have the toggle invisible event attached to its image map coordinates. if that makes sense.

that means one button on a totally different image map needs to toggle visible another image map. and the image map that was toggled visible needs to have its own toggle to make it invisible again

oh and i should mention, the original image map is a background image. lol
but the toggled visible image map doesn't have to be. i have the code for the background image map already, and the coords for the first button that is supposed to toggle the other image map as visible.

here's a couple snippets of the code
first the styling

Code:

<style type="text/css">
html, body {
	margin: 0;
	background: #000;
}
#container {
	width: 1024px;
	margin: 0px auto;
	background: #000;
	overflow: no;
}
.box1 {
	position: relative;
	margin: 0;
	padding: 0;
	width: 1024px;
	height: 220px;
	background: url(footershipnav.jpg) no-repeat;
}
#box-link {
	position: absolute;
	top: 40px;
	left: 260px;
	width: 25px;
	height: 25px;
	background: url();
	border: 0px solid yellow;
}
#box-link2 {
	position: absolute;
	top: 40px;
	left: 290px;
	width: 25px;
	height: 25px;
	background: url();
	border: 0px solid yellow;}

#box-link3 {
	position: absolute;
	top: 40px;
	left: 320px;
	width: 25px;
	height: 25px;
	background:  url();
	border: 0px solid yellow;}

then the image map liniks for the original image map. one of these links would be the toggle visible button.

Code:

<a id="box-link" href="shipnav.html" target="content"></a>
<a id="box-link2" href="canvas3d2.html" target="content"></a>
<a id="box-link3" href="canvas3d2c.html" target="content"></a>

there's actually many more links on the image map than that but thought it might be helpful in
setting up the first toggle to show the set up.

Hello. I need some help with refreshing an image(cgi chart) onclick. This is because the chart changes every minute(due to database update) and i want whenever you click on it to refresh.
My code so far is:
HTML:
Code:

<label for="choseChart">Change chart!</label>
<select id="choseChart" onchange="changeChart('choseChart');"> 
<option value="0" selected="selected">Chart of Months(column)</option> 
<option value="1">Chart of Branches(column)</option> 
<option value="2">Chart of Months(pie)</option> 
<option value="3">Chart of Branches(pie)</option> 
</select><br/> 
 
<img id="chartType" style="cursor: pointer; cursor: hand" onclick="" alt="Chart" src="1.cgi"/>

Javascript:
Code:

function changeChart(chartid) 
{  
	var chart = document.getElementById(chartid).selectedIndex; 
	document.getElementById("chartType").src=changeImage[chart];
}

Here is my code for two tab images.

Code:

    <a href="#page-2"><img src="/images/but02.png" style="margin-top:8px; float:left;"></a>
    <a href="#page-1"><img src="/images/but01.png" style="margin-top:8px; float:left;"></a>

I need to have it so when tab '#page-2' is clicked it will change the image to '/images/but03.png' and when tab '#page-1' is clicked it will change the image to '/images/but04.png' ?

Its basically to show which tab is active, one image is lighter then the other.


Can anyone help ?

Hi guys..
Im looking to basically have an image which is a button with a value, and when i click the image, it gets replaced by another image with a different value. when clicked again it would return to the original image and value..
Is this possible? and if so, please help cos im terrible at javascript!

Many thanks

I know theres a lot of codes out there online for this but I cannot seem to get any of them to work for me. I am trying to make my layout for an item page for an online store. I'd like one big image, with one or 2 thumbnails under it which when clicked will switch the big image. Clicked, not mouseover.

Lets say my big images would be REG1.jpg and REG2.jpg, the first being the image on the page that will switch. THUMB1.jpg and THUMB2.jpg being the thumbnails.

Is there a simple way to do this or is the code a complete mess like I've been seeing on so many pages? I'd say I have an intermediate understanding of HTML and I've just started teaching myself javascript but I'm starting to fall off the wagon, I can't decipher the stuff coming up in these example codes.

Any help would be thoroughly appreciated!!

Hello,

How can we calculate size of image by using javascript ?

Thanks in advance

from my spry sub.menu tab,
i'm trying to use "onclick" to post a new img in a specific div elsewhere on the page.

<li><a class="MenuBarItemSubmenu" href="#">CPQC</a>
<ul>
<li><a href="#" onclick="document.getElementById('cpqcRange').src='images/cpqc/cpqcHot.png';">Hot</a></li>
</ul>
</li>

<div id="cpqcRange">
<p>
<img src="cpqcLocation.png" alt="cpqcLocation" name="cpqcLocation" width="504" height="360" id="cpqcLocation" />
</p>
</div>

i think i'm close, but something is wrong.
can you just call up the div "cpqcRange" by name and slap a new img.src in there???????

cheers,
Paul

today's weather in Kalispell, MT, USA
cold, brrrrr, not much snow, but it's coming soon
it was about 18degF this morning

Hi all,

I can't seem to add an onclick event to an image. I'm sure I am doing something wrong as I am very new to Javascript.

This is a part of my javascript code that is in the head and body of my HTML file:

Code:

<head>
<script language="JavaScript">
.....
.....
var redLocation0 = redArray[0]+".jpg";
....
....
	function redClick( buttonLocation ) {
	window.location = "http://www.yahoo.com/"
	}
....
....
</script>
</head>


<body>
<table>
<tr>
<td>
<script language="javascript">document.write('<IMG SRC="'+ redLocation0 +'">'); onclick="redClick('0')";</script>
</td>
</tr>
</table>
</body>

The image that is displayed is not clickable, and therefore the function redClick cannot be called.

Can someone please help me and tell me where I am going wrong here. I am kinda new to JavaScript.

Thanks!

Ok so I have a problem which I previously thought I had solved.

I am creating a JavaScript Toggle off and on panel and although I have the code sussed for the toggling function there is something off on the image swap function

I currently have it set up on two panels, so the code is used multiple times, the problem is it changes both buttons each time rather that just the one that was clicked.

Anyway let's see what you think

Javascript:
Code:

<script type="text/javascript">
var imageURL = "../images/portfolio/open.png";

function changeImage() {

     if (document.images) {
              if (imageURL == "../images/portfolio/open.png") imageURL = "../images/portfolio/close.png";
         else if (imageURL == "../images/portfolio/close.png") imageURL = "../images/portfolio/open.png";
         
         document.images["img1"].src = imageURL;
		 document.images["img2"].src = imageURL;
     }
} 
</script>

HTML:
Code:

<a href="#" onclick="toggle_visibility('job1');"><img name="img1" src="../images/portfolio/open.png" onClick="changeImage();"></a>
<a href="#" onclick="toggle_visibility('job2');"><img name="img2" src="../images/portfolio/open.png" onClick="changeImage();"></a>

Any idea what I have done wrong and why it is changing both of the images ('img1' and 'img2') instead of changing them seperately as they are clicked ??

Code:

<img id="who" class="who" src="who.jpg" alt="Warriors Chosen For Battle" title="Warriors Chosen For Battle">
<img id="chosen" class="selector" src="selector.jpg" alt="Click for next image" title="Click for next image" onclick="chosen()">
<img id="ambassador" class="selector" src="selector.jpg"  alt="Click for next image" title="Click for next image"onclick="ambassador()">

Code:

function chosen()
{
document.getElementById("who").src="chosen_for_christ.jpg";
}

function ambassador()
{
document.getElementById("who").src="ambassador.jpg";
}

Yeah so basically when I click on one of the selector images I want it to change the value "who" images src value. I'm making an image selector, it works fine in IE, but every other browser it refuses to do anything.