I will have two text boxes that will accept numeric values and an image. What I need is if the user change the value of box 1, the value in box 2 will automatically update depending on the pixel dimensions of the image and vice versa.
Basically I need to automatically calculate the pixel ratio of an image and then use that value to multiply by the user inputted size.
I'm currently trying to move a div that holds a text message forward pixel by pixel and eventually I'll write the code for it to go backwards and repeat.
But I am not quite understanding what I've done wrong. It seems like a simple task, but It's not going anywhere.
I call a function from the xhtml document like so:
<body onload = "moveText()">
<div id="movingText">
<p>This message should scroll forward</p>
</div>
[Code]....
it seems so clear cut, I can't imagine what could be wrong but apparently all my browsers don't like it.
i would need a 1x1 pixel image for my flagcounter,ive been trying for months:([URL] (the stars for the image not to appear)
View 8 Replies View RelatedI have the following down code to display xy of image pixel I want to add an event ( onclick ) to save the current xy to an array after that I want to add a button to display the previous saved xy in this array...any clue??
<html>
<head>
<script>
function showPosition1(evt,elImage)
[Code]....
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)?
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.
View 1 Replies View RelatedSo 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?
View 8 Replies View RelatedI 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?
View 5 Replies View RelatedI 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?
I have a photo gallery built with XML and PHP (pulling images from a client's Myspace albums).The gallery works fine, displays thumbnails and captions, paginates properly, etc.The whole thing is loaded by AJAX into a div, which complicates things a bit, but it works.When a visitor clicks a thumbnail, the full-sized image displays in a div overlay on top of the gallery div.The overlay is hidden until a thumbnail is clicked, when it is toggled to "visibility:visible". When the overlay "close" link is clicked, the overlay is hidden again.That also works. Some of the images are too large to display properly inside the div without throwing off the layout, so I had to set a max height and width.I can't just use CSS to set the dimensions or it'll size EVERY image to those dims, and the photos are all different sizes...some wider, some longer.So I used javascript to check the image size when the thumbnail is clicked.
All of that worked.(Although strangely, if I try to toggle the visibility as part of the function rather than putting it into the link, it doesn't work!)The problem is that once the dimensions of "img1" are set, they STAY that size even when the next thumbnail is clicked.So if the first image is 800px tall, the script crops it to 640px...then the next image may only be 400px pix tall but it displays as 640px high, making it distorted.I tried to add a "resetImgSize" function to the "close" link in the overlay, setting the img1 dimensions back to 2px x 2px when the overlay is closed, but the same thing happens...Once the img1 dimensions are set to 2x2px, they stay that way even when a new thumbnail is clicked.
The following code returns the width and height as: undefined in the alert. I can`t see what i am doing wrong here. I would like the width and height of the chosen image to be displayed in the alert.
<html>
<head>
<script type="text/javascript" language="javascript">
function getImageSize() {
[code]...
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.
Do you know how to calculate position of image to move it to vertical center of screen? I mean especially the general problem of scrolling. The image doesn't change its absolute position, but when user scrolls or views a page with images, so he sees how the image gets more and more close to the top edge of screen, till the distance is 0. And now imagine the image is positioned absolute, 1000 from top. And on the screen it is at the position 0. How can I calculate its position from the top of screen?
View 3 Replies View RelatedI have the following code in a .net page:
<IMG alt="photo" src="Imagesa.gif" height="70" width="70">
When the page opens, the window is not maximized. So when I maximize
the window, the image disappears. If I restore down, the image is
still gone. All the darn coding on this page and I'm getting stuck on
HTML!
In the following (IE only) mini page (a table which is supposed
to have a fixed header), when you first do anything with the scroll
bar, you will see the top two rows of the table jump slightly
(a few pixels) down and to the right. I could figure out
a specific numeric fudge factor value that will make me happy
on my own Win 2K / IE 6 system, but I'd like to know a proper
way to make this more general (for other IEs). Code:
I am trying to dynamically resize an image. Here is my code:
<img border="0" src="images/right.gif" width="16" height="100" name="right">
<SCRIPT Language=Javascript>
<!--
function ChangeImgSize(){
[Code]....
The image does not get resized. I've been testing the page on current browsers (IE 8, Firefox, Chrome). I'm certain I'm doing something newbish, I don't really know Javascript all that well.
how to veiw this eval's out put?
function doButtons(picimage) {
eval("document['picture'].src = " + picimage + ".src");
}
<?php
// to change the image size within the web page
function imageResize($width, $height, $target) {
//takes the larger size of the width and height and applies the formula accordingly...
//this is so this script will work dynamically with any size image
[Code]....
I have to display an image in a fixed spot on my web page. The images are submitted by users, and I have no control over their size (width and height). If the image is wider than 130 pixels, I need to display it with an IMG WIDTH=130 to fit the spot. If the image is less than 130 pixels, I want to display it as is.
Is there a way with Javascript to retrieve the width of the image before the image is displayed by the browser? I know I can preload the image, can I then look at the width before the HTML displays it?
I want to know how to auto resize an image when the mouse cursor hover
or point onto an image without clicking it.
is there a tutorial out there? or could you show me the link for it.
how to resize a div containing some text by setting a width and height so it would stretch to fill that area like an <img> tag? E.g. when you set the width and height attribute of an image, it resizes the image to fill that area. I do not wish to send a request to a php script to build an image containing the text since it will be slow and affect the scalability of the web app. Oh, and I would preferably not like to use html5 because it is a requisite that I need compatibility with ie7+ (and firefox/chrome).
View 5 Replies View RelatedI have a problem trying to load an image without the image resizing
itself to fit into the window. My simple javascript is as follows:
function viewImage(filename)
{
features = "height=500, width=670, scrollbars=yes, resizable=yes";
photo = window.open(filename, "Preview", features);
}
I need to have an image of a heart on a site that beats, so essentially it expands and contracts. Whats the best animation effect for this? Should I use .animate to resize the image?
View 7 Replies View RelatedI have two images, one on top of another. I would like it so that if you mouse over the image on top (imgB), this image would resize and expand. I have tried playing with jQuery's animate() and height/width properties, but these just crop the image as oppose to resizing them.
<div id="imgA" style="background-image:url(aq.jpg); width:1000px; height:400px;">
<div id="imgB" style="background-image:url(wmc.png); width:200px; height:200px;"></div>
</div>
[code]....
Basically, i have an image that i want it to be resized when i maximize and change browser size, so it is always centered. I have to use only javascript. I tried many window.resize functions but nothing works. Lets say the image is called 0000.jpg.
View 2 Replies View RelatedI've written some javasript code to resize an image tag. While the page loads the image tag is display: none so a large image wont break the stylesheet before I have a chance to shrink it. onload I call function load1 and you can follow the rest from the code below. This is working in Firefox and Chrome and appears to be doing absolutely nothing in any version of IE.
Javascript after </html> tag:
<script type="text/Javascript">
function load1() {
imageLoaded();
document.getElementById("confImage").style.display = "block";
} function imageLoaded() {
var iW = document.getElementById("confImage").width;
var iH = document.getElementById("confImage").height;
changeImageSize(iW, iH);
} function changeImageSize(iW, iH) {
if (iW > 460 || iH > 460) {
reset dimension of image to fit in div
var multiply = 0;
if (460 / iW < 460 / iH) {
multiply = myFloor(460 / iW, 3);
} else {
multiply = myFloor(460 / iH, 3);
}
document.getElementById("confImage").width = multiply * iW;
document.getElementById("confImage").height = multiply * iH;
}}
function myFloor(n, pos) {
n = "" + n;
if (n.length < n.indexOf('.') + pos + 1) {
return parseInt(n);
} else {
return n.substr(0, n.indexOf('.') + pos);
}}
</script>
I have an image that i want it to be resized when i maximize and change browser size. I have to use only javascript. I tried many window.resize functions but nothing works. Lets say the image is called 0000.jpg.
View 3 Replies View Related