Can Javascript Detect An Images Dimensions?

Jun 6, 2003

I'm working on an image gallery and want to popup windows that are the size of the images they're meant to show.

In php I would use getimagesize() and plug the dimensions into a new window but the server doesn't support it so I'm sort of stumped on how to dynamically size the windows appropriately. Any suggestions?

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Rotating Images And Different Image Dimensions

Jul 23, 2005

I am rotating images at one location of my web site. My problem is if I set the width and height of the new image before I show the new image, the old image is stretched first to the new image dimensions, and if I show the new image before setting its dimensions, the new image is stretched first to the old image dimension before it is adjusted to its own dimension. I would like to load a new image with its own dimension at the same time. How can I do this?

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AddClass On Set Of Images Based On Dimensions?

Jun 16, 2010

I've got the jquery-ui slider working on adjusting the size of my thumbnails, BUT the problem is if the image is portrait, it overflows out of the container´┐Ż*jquery to the rescue, right? Not quite.Below is the js and basic css that i'm using. Shouldn't this be applying a different class on each img element based on the height/width values? They're all getting the same class.Am I needing to do some sort of loop function for this instead?

Code JavaScript:

$("#thumbnail_size").slider({
range: "min",
min: 125,

[code]....

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Get An Image's Dimensions / Large Images Always Fail To Load

Oct 29, 2010

I have also Googled this issue plenty of times, but nothing seems to be working 100% and/or the "solution" found is several years old.I have a text field on a webpage where a user enters in a URL to an image and then clicks a button to preview it. I want to restrict the image's size, so if it is larger than 600x450 then it will be automatically resized to those dimensions.The problem I have with this code is that the myImage.onerror event always fires if the image is large. My question is: how do you make the script "wait" for the image to load completely before trying to retrieve the width and height? Or, even better, how do you prevent the image failing to load?

Also, I know how to get the image's dimensions via PHP; however, according to the getimagesize() function's documentation on php.net, the function downloads the image to the server before retrieving the image's width and height, which could be potential trouble if a malicious or ignorant user enters a URL to an excessively large image.

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Detecting Image Dimensions With Javascript?

Nov 28, 2006

I have some CSS/javascript which takes an image and re-sizes it on a page with a hover-over state which causes it to expand. However, this will only re-size to specific proportions (in this case 1:1).

This is fine in the case of e.g. an 86x86 image but what I want to be able to do is detect if the image has a height greater than it's width, and if so, crop the image accordingly to make it a square.

Is there a way of doing this with javascript?

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Detect If Images Are Loaded

Feb 21, 2003

How do I detect if a couple of images on my page are loaded? I must somehow detect if those images are loaded and if possible, stop the visitor from doing anything until they are loaded.

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Detect Weather Is On Or Clicking A Images B4 Enter The Real Pages?

Oct 24, 2009

how to detect firefox before let the user in some guys just disable javascript and went in I finding solution i think of it but i dun know the code not sure is it working Script that allow the browser to check weather javascript is ON if not cannot grant access to the page . Another thing is by using a image means when i enter the site it will show a image i will need to click it before it enter the content of the pages i think that a javascript code i seen it somewhere else about months ago.

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Detect Pdf Properties Using Javascript

Jul 23, 2005

I would like to generate a page of links including some of the pdf properties (title, author, version, etc.) for a folder full of pdf's. Is this possible from Javascript?

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Javascript To Detect Textbox

Aug 29, 2006

I am wondering if any of you Javascript experts can enlighten me on
which event to call. The use situation is that the tetxbox field is
populated from the DB and the add/update and delete will work only when
a textbox for reason for change is entered. This mean if a user simply
type in the same value as before, the ASP.NET textbox will be marked
with changed. But it should not limit that a user can not change the
whole value in the textbox at all.

I have looked at keyup, mousedown, etc. but it will calling the
function after every key is entered and that is what I don't want to
happen.

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Javascript, Detect DIV Height

Jun 19, 2006

I am very new to javascript, it is on my list of things to learn... but I have a wide range of other traditional programming languages so I understand functions, etc

however in the mean time I am looking for a way to detect the height of a specific div.

My goal is that I have a div that is set to overflow: auto ,

If the content of the div goes beyond its set height, I would like to make a div visible. So basicly I need to get the height of a div element, and compair it to a pixel number.

To go a step beyond, it would be cool to make the div that is visible when there is scrolling, to disapear once you got to the bottom of the div.

Any ideas?

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Javascript To Detect If A Screen Reader

Jul 23, 2005

Is it possible to use javascript to detect if a screen reader is
running a on a users machine?

I know that on a pc, screen readers use the MSSA interface. Is there
a way to detect whether this is operational or not?

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Using Javascript To Detect Frame Source

Jul 23, 2005

I have two frames. "Top" contains a local file on my server with the aforementioned javascript. "Bottom" is a remote website on a server I do not control. I want to use javascript in "Top" to determine what the current url is in the "bottom" frame...

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Javascript Detect Browser Height...

Mar 31, 2004

Is there a way to detect with javascript the height and width of a browser window that's open? Much the opposite of a pop-up where you define the height and width I guess you could say - anyone know if this is easily possible?

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Detect Whether Javascript Threw An Alert Window

Aug 24, 2006

So, basically, I need to detect whether an alert window was thrown. I can't find where it's thrown from but I need to disable a button only if there were no alert windows thrown.

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How To Get Div Dimensions In IE

Jul 20, 2005

I want to have an image inside a div section, like a background image. that
adjust its size to the dimensions of div container:

<body
<div class="logo" id "logot">
<img src="logo.png" id="imagelogo">
</div>

a script function retreives the div section:

oLogo = document.getElementById("logot")

but oLogo.clientWidth gets the logo.png's width instead of the div area.

I have no problems with a similar function in mozilla browser,
any idea for IE?

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Need Help With Finding The Dimensions Of A Div.

Oct 2, 2006

I have a div which wraps a table. Initially, the div's display attribute is "none", basically I need to find the height of the table in the div, and use that information to render the div to the user. The div is rendered only on the users request.

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PopUp Dimensions

Feb 20, 2005

My site's encased in a pop-up, and since I don't know JavaScript, well, at all, I got some script from one of the many JS sites out there. I'm having an issue with it, though. It seems that different browsers are rendering its size differently, which is a bit of a hassle. For instance, it's a few pixels too tall in Firefox, but in Safari its a few pixels too wide and too tall. So, uh, what's wrong with it?

function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=550,height=450,left = 362,top = 159');");
}

(...)

<a href="javascript:popUp('dLog.html')">Development Log</a>
Looks messy to me, so if anyone wants to completely fix it up...

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Underlying Image Dimensions

Jul 23, 2005

Is there any way to determine the pixel height and width of an originalimage?

Specifically, If I have <IMG id=myImg src="pic.jpg" height=200 width=300> can I figure out what the original size of pic.jpg is (had I not placed the height and width attributes on the image, whether in the original tag or later via javascript)?

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Crossbrowser Element Dimensions

Jul 12, 2006

I'd like to know where I can find some informations on how to retrive
element dimensions in a cross browser whay. Until now I used
offsetWidth and offsetHeight, but I know their are not standard and
they have a different behaviour on different browsers. I need a way
that includes also margins, padding and eventually border size. I know
I have to deal with doctypes, but my javascript knowledge is not so
advanced.

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JQuery :: How To Get Dimensions Of SWF To Animate

Nov 2, 2010

I cannot get the dimensions of my swf to animate for whatever reason. This works:
function resizeSwf(contentHeight){
document.getElementById('swfplayer').height = contentHeight + 20;
}
But this does not:
function resizeSwf(contentHeight){
$("#swfplayer").animate({
height:contentHeight + 20
},400);
}
I am using jquery-1.4.3.min.js and I have verified it is at the correct path.

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Image Element Dimensions In IE8

May 19, 2009

The position and visibility of the image element is dynamically updated.The following code displays the correct dimensions in Firefox 3.0.10 and Chrome 1.0.154.65, but displays "0,0" in IE8.

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Jquery :: Get Dimensions Of An Image

May 8, 2011

So I'm working in a project where I need to get the dimensions of an image. If I use .height() of the image I get 0 returned, but if use .height() on its surrounding div I get the image's height returned.I need the height and width of the actual image, what should I do?

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How To Set The Dimensions And Coordinate Of A Window

Jul 14, 2004

I would like to force the initial location of a window to the (0,0) coordinate and give it a specific width and height when it loads.

I use the following:

Code:
function initPage() {
window.moveTo(0, 0);
window.resizeTo(400, 400);
}
I call this function at the onload event of the page body.
I get an error saying: "Access is denied"

what is the problem with the code? what could be causing this?

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Detect URL & Detect Something On Page & Show Content Accordingly?

Feb 14, 2009

Can Javascript be used to detect a certain url and then "not" write some html according to that url and also detect something on the page and "then" display some html?.

Example: I'm working on a volusion site that uses asp. There's basically only one page that's changed dynamically. I would like to display some html when and only if the cart has any items in it. But also not to show up on the check-out pages.

The page dynamically displays "Your cart has 1 item in it..." when the visitors puts something in their cart.

So could javascript detect when this is displayed then write some html and then also detect if the url is showing the cart and then not show the html?

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Change The Dimensions Of A Pop-up Video Player?

Jul 6, 2009

my website[url]... has a pop-up video player but on certain videos (speeches for example) the video is of slightly different dimensions. I can not re-encode the video so I was wondering if I could easily edit a file in notepad to change the dimensions of the player in order to enable the user to be able to see all of the player controls. In the flash folder I have .swf and .flv files. Is there another file that represents the player dimensions/controls elsewhere?In addition to this, if a video is playing and I click off of the video player (onto the greyed out background) then the video player stops. Does anyone know how to stop this happening?

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Dimensions Of Browsers Viewable Space?

Sep 18, 2009

I'm trying to figure out the dimensions of the users viewable browser screen (how much is actually rendered) i.e my screen is 1680x1050 but when my browsers full screen that's not what is the viewable size, its less.So I tried this:

var height = window.innerHeight;
var width = window.innerwidth;
alert("width: "+height+"width: "+width);

and I get undefined. how I can get the height and width?

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