JavaScript - Q: Js New Image() Vs Createelement('img')

I'm trying to check to see if a dynamically created element exists BEFORE creating another element of the same exact type...but my if statement at the beginning is not working and another element is just created.

Code:

function writeElement(id) {
	if(document.getElementsByTagName('transElement')[0]) {
		var id = id;
		killElement();
		writeElement(id);
	}
	var id = id;
	var transElement = document.createElement('transElement');
	var solidElement = document.createElement('solidElement');
	var closeElement = document.createElement('closeElement');
	//transElement.id = "transElement";
	transElement.setAttribute('id', 'transElement');
	solidElement.setAttribute('id', 'solidElement');
	closeElement.setAttribute('id', 'closeElement');
	closeElement.setAttribute('onClick', 'killElement()');
	closeElement.innerHTML = "Close";
	var content =  "inject_poem.php?id=" + id;
	getdata(content, 'solidElement');
	document.body.appendChild(transElement);
	document.body.appendChild(solidElement);
	document.body.appendChild(closeElement);
}

Does anyone know what is incorrect about my if statement?

Please delete, someone had a retard moment

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!!!

I have gotten my script to do exactly what I want it to do with one exception. I have some thumbnail images that people can mouse over and the actual image is 100px by 75px. That is what I use for my thumbnail and they reside in www.website.com/images/thumbs/image1.jpg. I have the large version of the image that resides in www.website.com/images/image1.jpg. Its actual size is 640px by 480. When I mouse over my thumbnail, I don't want the thumbnail to appear for the larger image, I want the large image to appear instead? Let me know if you need ellaboration. Any help would be great! Thank you.

Javascript
Code:

   <script language="JavaScript">
function Change_Big_One(thumb){
document.getElementById('BigOne').src=thumb.src.replace("_th","")
}
</script>

HTML THUMBNAIL
Code:

<div><img src="https://www.website.com/images/thumbs/image1.jpg" class="thumb" onMouseOver="Change_Big_One(this)"></div>

HTML LARGER IMAGE
Code:

<div><img src="" id="BigOne"></div>

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.)

Hello,

I am working on a page that has a jQuery full browser BG image and I am trying to also utilize a MooTools gallery. There seems to be some interference between the two JavaScripts as only one works (whichever one is last in order in the header of the HTML document).

Links:

http://www.courtneyhunt.com.au/press_bg.html
http://www.courtneyhunt.com.au/press_gallery.html

I am a complete novice with JavaScript so if anyone could help that would be great.

Thank you in advance.

Hello,

My site has an image gallery with a row of pictures at the bottom. When I load up the page it should show image 1 in the main gallery window, but instead it's showing image in position #10 (the one to the left of #1). You can see what I'm talking about here.

When you load the page it's showing the White House, but it should be showing the Green House (position #1 in slider). The White House can't be seen in the slider since it's in position #10, but shows up first int the main window. Is this a javascript issue or what? All JS files can be found here

Can anybody help me debug this?? I'm going nuts

Thank you

Hi,

I am still designing the website and want some flexibility. I am capturing the mouse clicks fine on top of an image, but the coordinates are absolute and not relative to the image. How can I capture mouse clicks relative to the image so that I can move the image anywhere in my website?

Thanks!

Hi,

So here is my problem. I have a main image that has a bunch of images (e.g., stars) on top. I place the stars in absolute positions on top of the main image. If a user resizes the brower, then the position of the main image changes, so then the stars are off position (not on top of the main image).

Should I:
1) make the main image be in an absolute position?
or
2) do something else such that the main image moves around if the browser is resized? but then I don't know how to re-adjust the positions of the stars on the fly.

Here's what I usually use and have been using for years and it works great, just not for this particular purpose. I don't have a clue when it comes to javascript.

Code:

<noscript><img src="no_script_quote.gif" width="406" height="94"/></noscript><script language="javascript">

var delay=6000
var curindex=0

var images=new Array()

	images[0]="quote1.gif"
	images[1]="quote2.gif"
	images[2]="quote3.gif"
	images[3]="quote4.gif"
	images[4]="quote5.gif"

var preload=new Array()

for (n=0;n<images.length;n++)
{
	preload[n]=new Image()
	preload[n].src=images[n]
}

document.write('<img name="defaultimage" src="'+images[Math.floor(Math.random()*(images.length))]+'">')

function rotateimage()
{

if (curindex==(tempindex=Math.floor(Math.random()*(images.length)))){
curindex=curindex==0? 1 : curindex-1
}
else
curindex=tempindex

	document.images.defaultimage.src=images[curindex]
}

setInterval("rotateimage()",delay)
</script>

But, now I want to be able to set a default picture to be shown first and have the random pics appear next. I also don't want the default pic to show up again in the random array. So basically, every time the page was first visited, or refreshed it would show the default picture then move into the random pics.

Is there anyway to modify the code that I'm using to accomplish this? Or... Any help would be appreciated.

Thanks,
Dell

So I have a gallery which is displaying images from an array called imgList. When they are displayed I want the user to be able to link directly to the image. Is there a simple way to do this?

The JavaScript:
Code:

//<!--

var imgList = new Array(
	"images/gallery/1.jpg",
	"images/gallery/2.jpg",
	"images/gallery/3.jpg",
	"images/gallery/5.jpg",
	"images/gallery/6.jpg",
	"images/gallery/duo.jpg"
	);

var clientData = new Array(
'',
'',
'',
'',
'',
'',
''
);

var currentMain = 0;
var currentMainT = 0;
var current_position=0;
var all_links="";

function init(){
	all_links=document.getElementById('gallery').getElementsByTagName('a');
	all_links[0].style.color="#7d3d3d";
	ShowMain(current_position);
}

function color_me(element,color){
	element.style.color=color;
}

function Prev(){
	color_me(all_links[current_position],'#000000');
	if((current_position-1)>-1){
		current_position=current_position-1;
	}
	else{
		current_position=(all_links.length-1);
	}
	ShowMain(current_position);
//	ShowMainT(current_position);
	color_me(all_links[current_position],'#7d3d3d');
}

function direct_selection(number){
	all_links[current_position].style.color="#000000";
	current_position=number;
	ShowMain(current_position);
	all_links[current_position].style.color="#7d3d3d";
}

function Next() {
	color_me(all_links[current_position],'#000000');
	if((current_position+1)<all_links.length){
		current_position++;
	}
	else{
		current_position=0;
	}
	ShowMain(current_position);
//	ShowMainT(current_position);
	color_me(all_links[current_position],'#7d3d3d');
}

function ShowMain(which){
	currentMain = which;
	currentMainT = which;
	if ( currentMain < 0 ) currentMain = 0;
	if ( currentMainT < 0 ) currentMainT = 0;
	if ( currentMain > imgList.length-1) currentMain = imgList.length-1; 
	if ( currentMainT > clientData.length-1) currentMainT = clientData.length-1;
	document.getElementById('mainImg').src = imgList[currentMain];
	document.getElementById('mainText').innerHTML = clientData[currentMainT];
	var PD = document.getElementById('Pg');
	var PD2 = document.getElementById('Pg2');
	
	document.getElementById("mainText").style.display = 'inline';
//	return false;
}

onload = function() { ShowMain(0); }
onload = function() { ShowMainT(0); }
//-->


//<!--
function preloader(){
	// counter
	var i = 0;

	// create object
	imageObj = new Image();

	// set image list
	images = new Array();
	images[0]="images/gallery/1.jpg";
	images[1]="images/gallery/2.jpg";
	images[2]="images/gallery/3.jpg";
	images[3]="images/gallery/5.jpg";
	images[4]="images/gallery/6.jpg";
	images[5]="images/gallery/duo.jpg";


	// start preloading
	for(i=0; i<=3; i++){
		imageObj.src=images[i];
	}
}
//-->

The HTML where it is displayed:
Code:

<img id="mainImg" src="images/gallery/1.jpg" style=" border: solid #7d3d3d 5px;" alt="galleryimage" />

Hi there,

I found this thread on the forum its from a few years back but the code works, but I can't seem to get the image that appears as you rollover the button to display in the correct place. I'm not sure if its because I'm using tables within tables? Should I recode in divs?

Any help is greatly appreciated!!

http://www.codingforums.com/archive/...p/t-95847.html

Hey folks..

Hope you can help, I'm completely new to this and have no knowledge at all when it comes to javascript. Have been using this script on my site for a while. Is there anyway I can add a URL link to the images that are in my selector? When clicked would go to that page on my website.

Thanks in advance of any help

Nat


<script language="JavaScript">

/*
Random image slideshow- By Tyler Clarke (tyler@ihatecoffee.com)
For this script and more, visit http://www.javascriptkit.com
*/

var delay=10000 //set delay in miliseconds
var curindex=0

var randomimages=new Array()

randomimages[0]="http://www.anywebsite.com/images/splash1.jpg"
randomimages[1]="http://www.anywebsite.com/images/splash2.jpg"
randomimages[2]="http://www.anywebsite.com/images/splash3.jpg"
randomimages[3]="http://www.anywebsite.com/images/splash4.jpg"
randomimages[4]="http://www.anywebsite.com/images/splash5.jpg"

var preload=new Array()

for (n=0;n<randomimages.length;n++)
{
preload[n]=new Image()
preload[n].src=randomimages[n]
}

document.write('<img name="defaultimage" src="'+randomimages[Math.floor(Math.random()*(randomimages.length))]+'">')

function rotateimage()
{

if (curindex==(tempindex=Math.floor(Math.random()*(randomimages.length)))){
curindex=curindex==0? 1 : curindex-1
}
else
curindex=tempindex

document.images.defaultimage.src=randomimages[curindex]
}

setInterval("rotateimage()",delay)

</script>