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JavaScript - Dynamic Image Resizing
I am trying to dynamically resize an image. Here is my code:
Code: <img border="0" src="images/right.gif" width="16" height="100" name="right">
<SCRIPT Language=Javascript>
<!--
function ChangeImgSize(){
right.height = 3000;
}
ChangeImgSize()
//-->
</SCRIPT>
This is on an asp page, and the <script> tag is the last thing on the page before </body> 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. Thanks in advance, Skip Similar TutorialsHi Guys, I have a multi language cms site and need to be able to resize font to fit the div its contained in so eg if I have a 300px wide navbar with 13px text: home | about | contact | services | products and in Russian its: fgfgdg |gghgfdhggghgfhgfh | gfg |gfdgfgdfgfdgffd dgfdgdg | gdfgfgdfgfgdfg I would like the font size to reduce down to fit the 300px fixed width div from say 13px to 10px or whatever fits. so it would be like: fgfgdg |gghgfdhggghgfhgfh | gfg |gfdgfgdfgfdgffd dgfdgdg | gdfgfgdfgfgdfg I was looking at http://jsfiddle.net/e8B9j/2/show/ and was hoping someone could get it to work to suit the above. So as above u'd have say 5 menu item divs nested in a navbar div Code: <div id="navbar"> <div class="menuItem">item</div> <div class="menuItem">item</div> <div class="menuItem">item</div> <div class="menuItem">item</div> <div class="menuItem">item</div> </div> ...or using ul and li's Any help greatly appreciated. Perhaps a jquery solution out there? Thanks I'm coding my new website, and to save bandwidth, i'm letting users link to their own avatars, so I want to resize any images over 150px wide so it doesn't mess up my layout - simple, right? Well, you'd think so, but I don't know any javascript, so i've scrapped this together with what little I know: Code: var obj=document.getElementsByTagName("img");
for(var i=0;i<obj.length;i++){
if(obj[i].className == "avatar") {
if(getElementWidth(obj[i]) > 150) {
obj[i].style.width = 150;
}
}
}
Can anyone help me fix that or code me a new one please? I need it to check all elements (well, images - but only images will be using it) for a width of over 150px, and, if it is - change it to 150px I know it's pretty simple but it's hurting my head! :P Thanks in advance -Alux Im using the below javascript to resize images on a forum I have created but I want it to ignore 2 certain images that are part of my header. Heres the code Code: <script>
window.onload = resizeimg;
function resizeimg()
{
if (document.getElementsByTagName)
{
for (i=0; i<document.getElementsByTagName('img').length; i++)
{
im = document.getElementsByTagName('img')[i];
if (im.width > 600)
{
im.style.width = '600px';
eval("pop" + String(i) + " = new Function(\"pop = window.open('" + im.src + "','phpbbegypt ','fullscale','width=400,height=400,scrollbars=1,resizable=1'); pop.focus();\")");
eval("im.onclick = pop" + String(i) + ";");
if (document.all) im.style.cursor = 'hand';
if (!document.all) im.style.cursor = 'pointer';
im.title = 'Click Here To See Image Full Size ';
}
}
}
}
</script>
But I want it to ignore 2 images..and not resize them. head1.jpg head2.jpg Any help would be gratefully recieved !! Cheers !! Hi there, I just recently took over a site that has some java code on it I'm unfamiliar with. If you go to smalltowngossipmusic.com, you'll see what this code does. Go to the pages "Sounds" or "Travel", and once your mouse leaves the main image at the top of the page, you should see those pages shrink. This is some code that was implemented on the site (which is wordpress) in the header.php template. Here is the code: Code: <script type="text/javascript">
/* <![CDATA[ */
var $ = jQuery.noConflict();
$(document).ready(function () {
headerImage();
});
var speed = 500;
var origMT = 0, origHeight = '120px';
function expandHeader(obj) {
$('.headerImage').animate({height: '436px'},speed);
$('.headerImage img').animate({'margin-top': '-2px'},speed);
}
function shrinkHeader(obj) {
$('.headerImage').stop().animate({'height': origHeight},speed);
$('.headerImage img').stop().animate({'margin-top': origMT},speed);
}
function headerImage() {
origMT = $('.headerImage img').css('margin-top');
origHeight = $('.headerImage').css('height');
$('.headerImage img').css('margin-top','0');
$('.headerImage').css('height','436px');
setTimeout(shrinkHeader,speed*2);
$('.headerImage').hover(expandHeader, shrinkHeader);
}
/* ]]> */
</script>
If you look at the page source for each page, you'll see that there is nothing out of whack (at least, not that I can find). However, for some reason, this shrinking script only works on the two pages I mentioned - on every other page, it either doesn't work at all, or it only works about half-way. I have made sure the page.php and header.php templates both have accurate picture information in them, and can not find anything wrong anywhere. Is there any advice anyone here can give me on how to fix this? I've been doing html and css for awhile, but am relatively new to javascript and php, so am a bit out of my element on this. I'm willing to post any more code, snippets, whatever needed, just let me know what you need if you think you can help. Thanks, Brandon Hello all; I am trying to load four images into a canvas using an array. The images load fine and all, however they are resizing weird. I haven't specified what I want them to resize to, as the actual image are already the sizes I want. However when loaded into the canvas they are sizing differently then their actual sizes. Even when I specify their actual size in the code, they still resize weirdly. Here is my code: Code: <body>
<canvas id="worldscreen" class="map"></canvas><br />
<script type="text/javascript">
function loadImages(arrow, call) {
var images = {};
var loaded = 0;
var num = 0;
for (var src in arrow) {
num++;
}
for (var src in arrow) {
images[src] = new Image();
images[src].onload = function(){
if (++loaded >= num) {
call(images);
}
};
images[src].src = arrow[src];
}
}
window.onload = function(images) {
var canvas = document.getElementById("worldscreen").getContext("2d");
var arrow = {
top: "sideQUEST/images/arrow-top.png",
right: "sideQUEST/images/arrow-right.png",
bottom: "sideQUEST/images/arrow-bottom.png",
left: "sideQUEST/images/arrow-left.png",
};
loadImages(arrow, function(images) {
canvas.drawImage(images.top, 100, 18);
canvas.drawImage(images.right, 215, 36);
canvas.drawImage(images.bottom, 100, 115);
canvas.drawImage(images.left, 36, 36);
});
};
</script>
</body>
You can see the code in action he http://myrmidon16.x10.mx/test.php. This is very frustrating and if you have any suggestions it would be greatly appreciated. Thank you. Hi CodingForum! For my website, I have a working script that changes the background image of my website every time it is reloaded. However, I would also like the image to dynamically resize as the user resizes the browser window. here is a code snippet: Code: <head>
<script type="text/JavaScript">
/*<![CDATA[*/var el="bgImg";var bgimg=new Array("../00home/06home.jpg","../00home/07home.jpg");var random=Math.round((bgimg.length-1)*Math.random());var cssStr="#"+el+" { background: url("+bgimg[random]+") no-repeat center } ";var style=document.createElement("style");style.setAttribute("type","text/css");if(style.styleSheet){style.styleSheet.cssText=cssStr;}else{var cssText=document.createTextNode(cssStr);style.appendChild(cssText);}document.getElementsByTagName("head")[0].appendChild(style);/*]]>*/
</script>
<style type="text/css">
.rotatebg {
z-index:0;
position:fixed;
top:0; left:0;
width:1378px; height:1178px;
background-repeat: no-repeat;
background-position:inherit;
overflow:hidden;
}
</style>
</head
<body>
<div class="rotatebg" id="bgImg" style="width:100%; height:100%" ></div>
</body>
Does anyone know how I can augment/alter this coded setup to enable the randomly loaded background image to proportionately fill the browser window? Hey all- trying to get this bit of js to work properly. I'm close, but the issue is that if the window is opened at a size that is SMALLER than the original image, it wont scale down to the smaller size until i first make the window bigger, THEN size it down smaller. The image itself is big (its fashion photography so it needs to be high res) and the js sets the minimum width at 1070. Id like to have the image as big as possible and then on page load automatically drop down to as low as 1070px if the window size is small. Here is the js: Code: jQuery.noConflict();
function screenSize() {
var w, h;
w = (
window.innerWidth ?
window.innerWidth :
(
document.documentElement.clientWidth ?
document.documentElement.clientWidth :
document.body.offsetWidth));
h = (
window.innerHeight ?
window.innerHeight :
(
document.documentElement.clientHeight ?
document.documentElement.clientHeight :
document.body.offsetHeight));
return {w:w, h:h};
}
jQuery(document).ready(function ()
{
if( screenSize().w > 1070 )
{
document.getElementById('home-page-bg-image').style.width = screenSize().w + 'px';
}
})
jQuery(window).resize(function()
{
if( screenSize().w > 1070 )
{
document.getElementById('home-page-bg-image').style.width = screenSize().w + 'px';
}
});
let me know if you have any ideas I am making my first mobile website and need to put wallpapers in it. I cant make every picture in all resolution for each mobile. I found this website which can auto- resize image when user select their mobile brand...i have tried to learn it from page source but failed. Can any one help me please, m newbie xD here is the website: http://cartoonized.net/cellphone-wallpaper.ph I created a php and some javascript from code I found on this site. The problem is, I am not getting a slide show - only the first picture. I need to be able to slideshow everything in the Images folder - without detailing image names.... Here's what I have - I think I'm missing something simple: In the Images folder I have getimages.php: Code: <?
//PHP SCRIPT: getimages.php
Header("content-type: application/x-javascript");
//This function gets the file names of all images in the current directory
//and ouputs them as a JavaScript array
function returnimages($dirname=".") {
$pattern="(\.jpg$)|(\.png$)|(\.jpeg$)|(\.gif$)"; //valid image extensions
$files = array();
$curimage=0;
if($handle = opendir($dirname)) {
while(false !== ($file = readdir($handle))){
if(eregi($pattern, $file)){ //if this file is a valid image
//Output it as a JavaScript array element
echo 'galleryarray['.$curimage.']="'.$file .'";';
$curimage++;
}
}
closedir($handle);
}
return($files);
}
echo 'var galleryarray=new Array();'; //Define array in JavaScript
returnimages() //Output the array elements containing the image file names
?>
In my page, I put these in the <head> section: Code: <script src="Images/getimages.php"></script>
<script type="text/javascript">
var curimg=0
function rotateimages(){
document.getElementById("slideshow").setAttribute("src", "Images/"+galleryarray[curimg])
curimg=(curimg<galleryarray.length-1)? curimg+1 : 0
}
window.onload=function(){
setInterval("rotateimages()", 2500)
}
</script>
Then, in the body where I want the slideshow I have:
<div style="width: 170px; height: 160px">
<img id="slideshow" src="Images/beer.jpg" />
</div>
Hi, I am just about at wits end, and I am hoping someone here will be able to assist. I've searched and searched and have come close but to no avail. I found a nice image gallery code from "David's Kitchen" http://monc.se/kitchen/80/lightweigh...ith-thumbnails and have tweaked it to eactly what I wanted, however, I want to add an image caption of the alternate image text below the active picture. I've tried everything I could think of (with my limited knowledge) with no success. Any help would be GREATLY appreciated. Here is the code I have: Code: <html>
<head>
<style media="screen,projection" type="text/css">
/* begin gallery styling */
#jgal { list-style: none; width: 400px; position: relative; top: -12px; left: 40px; }
#jgal li { opacity: .5; float: left; display: block; width: 80px; height: 60px; background-position: 50% 50%; cursor: pointer; border: 3px solid #fff; outline: 1px solid #ddd; margin-right: 14px; margin-bottom: 14px; }
#jgal li img { width: 80px; height: 60px; }
#jgal li.active img { display: block; float: left; }
#jgal li.active, #jgal li:hover { outline-color: #bbb; opacity: .99 /* safari bug */ }
/* styling without javascript */
#gallery { list-style: none; display: block; }
#gallery li { float: left; margin: 0 10px 10px 0; }
</style>
<!--[if lt IE 8]>
<style media="screen,projection" type="text/css">
#jgal li { filter: alpha(opacity=50); }
#jgal li.active, #jgal li:hover { filter: alpha(opacity=100); }
</style>
<![endif]-->
<script type="text/javascript"> document.write("<style type='text/css'> #gallery { display: none; } </style>");</script>
<!--[if lt IE 6]><style media="screen,projection" type="text/css">#gallery { display: block; }</style><![endif]-->
<script type="text/javascript">
var gal = {
init: function () {
if (!document.getElementById || !document.createElement || !document.appendChild) return false;
if (document.getElementById('gallery')) document.getElementById('gallery').id = 'jgal';
var li = document.getElementById('jgal').getElementsByTagName('li');
enlargedImg = document.createElement('img');
document.getElementById('jgal').parentNode.insertBefore(enlargedImg,document.getElementById('jgal').nextSibling);
enlargedImg.src = li[0].getElementsByTagName('img')[0].src;
li[0].className = 'active';
for (i = 0; i < li.length; i++) {
li[i].style.backgroundRepeat = 'no-repeat';
li[i].title = li[i].getElementsByTagName('img')[0].alt;
gal.addEvent(li[i], 'mouseover', function () {
var im = document.getElementById('jgal').getElementsByTagName('li');
for (j = 0; j < im.length; j++) {
im[j].className = '';
}
this.className = 'active';
enlargedImg.src = this.getElementsByTagName('img')[0].src;
});
}
},
addEvent: function (obj, type, fn) {
if (obj.addEventListener) {
obj.addEventListener(type, fn, false);
}
else if (obj.attachEvent) {
obj["e" + type + fn] = fn;
obj[type + fn] = function () { obj["e" + type + fn](window.event); }
obj.attachEvent("on" + type, obj[type + fn]);
}
}
}
gal.addEvent(window, 'load', function () {
gal.init();
});
</script>
</head>
<body>
<ul id="gallery">
<li><a href="/bmfsweb/esg/image/Vactor Images2/industrial.htm" rel="nofollow" target="_blank"><img src="/bmfsweb/esg/image/Vactor Images2/2100_PLUS_PD_400w.jpg" alt="2100 Plus PD"></a></li>
<li><img src="/bmfsweb/esg/image/Vactor Images2/2100_Plus_Fan_400w.JPG" alt="2100 Plus Fan"></li>
<li><img src="/bmfsweb/esg/image/Vactor Images2/2103_400w.jpg" alt="2103"></li>
<li><img src="/bmfsweb/esg/image/Vactor Images2/F_Series_400w.jpg" alt="Front Hose Reel Jetter"></li>
<li><img src="/bmfsweb/esg/image/Vactor Images2/Jetter_shrouded_400w.JPG" alt="Rear Hose Reel Jetter"></li>
<li><img src="/bmfsweb/esg/image/Vactor Images2/2100_PD_400w.JPG" alt="2100 Classic PD"></li>
<li><img src="/bmfsweb/esg/image/Vactor Images2/2100_fan_400w.JPG" alt="2100 Classic Fan"></li>
</ul>
</body>
</html>
Again, any help is greatly appreciated. Thanks, Ben. Hi All, i know how to create a dynamic form or DIv ..but what i do not know is how to create a dynamic form/ or div into a previous dynamic one.. i need basically to see 5 dynamic forms / DIV in cascade where each one trigger the one coming after.. For what i need that : i have my user inserting information on the level 1. let say Copagny info 2- then he will be asked if he wants to add a sub level information ( subform) for that compagny or even many subforms at the same level .. and so on... 3- those sub level ( subforms ) can also call their respective subforms.. Any idea how to design this ? thanks I have made a script where you can add extra fields, and next to the row is a span that automatically displays the outcome from a calculation of three fields in that row. i.e. Q x (B - A) = total. Here is the bit that does the calculation: Code: function advCalc(selected) {
var result = Number(document.formmain.elements["quantity"+selected].value) * (Number(document.formmain.elements["provideamount"+selected].value) - Number(document.formmain.elements["supplyamount"+selected].value)) ;
result = result.toFixed(2) ;
result = addCommas(result) ;
document.getElementById("total"+selected).innerHTML = result ;
}
The bit that adds a new row of fields is: Code: function addPart(divName){
var newdiv = document.createElement('div') ;
newdiv.setAttribute('id', 'partrow' + counter) ;
newdiv.setAttribute('style', 'clear:both;') ;
newdiv.innerHTML = "<div style='float:left;width:40px;text-align:center;margin:5px 5px 0px 0px;'>\r<input onkeyup=\"advCalc('" + counter + "')\" id=' quantity " + counter + "' type='text' value='1' size='1'/>\r</div>\r<div style='float:left;width:100px;text-align:left;margin:5px 0px 0px 0px;'>\r<input id='manufacturer" + counter + "'type='text' value='' size='9'/>\r</div>\r<div style='float:left;width:95px;text-align:left;margin:5px 5px 0px 0px;'>\r<input id='partnumber" + counter + "'type='text' value='' size='9'/>\r</div>\r<div style='float:left;width:80px;text-align:left;margin:5px 5px 0px 0px;'>\r<input id='supplier" + counter + "'type='text' value='' size='4'/>\r</div>\r<div style='float:left;width:100px;text-align:left;margin:5px 5px 0px 0px;'>\r<input id='type" + counter + "'type='text' value='' size='6'/>\r</div>\r<div style='float:left;width:85px;text-align:left;margin:5px 5px 0px 0px;'>\r<input id='deliverytime" + counter + "'type='text' value='' size='13'/>\r</div>\r<div style='float:left;width:40px;text-align:left;margin:5px 0px 0px 45px;'>\r<select id='supplyCurrency" + counter + "'>\r<option value='pound' selected='selected'>£</option><option value='dol'>$</option><option value='euro'>€</option></select>\r</div>\r<div style='float:left;width:15px;text-align:left;margin:5px 5px 0px 0px;'>\r<input onkeyup=\"advCalc(\'" + counter + "\')\" id=' supplyamount " + counter + "'type='text' value='' size='3'/>\r</div>\r<div style='float:left;width:40px;text-align:left;margin:5px 0px 0px 45px;'>\r<select name='provideCurrency" + counter + "'><option value='pound' selected='selected'>£</option><option value='dol'>$</option><option value='euro'>€</option></select>\r</div>\r<div style='float:left;width:15px;text-align:left;margin:5px 5px 0px 0px;'>\r<input onkeyup=\"advCalc(\'" + counter + "\') id=' provideamount " + counter + "' type='text' value='' size='3'/>\r</div>\r<div style='float:left;width:20px;text-align:left;margin:5px 0px 0px 45px;'>\r<strong>£</strong>\r</div>\r<div style='float:left;width:40px;text-align:left;margin:5px 5px 0px 0px;'><span id=' total " + counter + "'></span></div> \r" ;
document.getElementById(divName).appendChild(newdiv) ;
counter++ ;
}
The problem I am having is that it works fine for the first row which is hardcoded as e.g. id="provideamount0" etc. It isn't working for any other fields added but I can't see what is wrong Ok, told you I'd be asking lots of questions ... Code: <div id="resizetest" style="width:200px;height:200px;border:2px solid blue">
<div style="background:#000033">
<a href="#" style="float:right;background:#ffffff" onclick='document.getElementById("resizetest").height="50";'>_</a>
</div>
This is a resize test
</div>
Why doesn't this resize? I've looked at examples, and I don't see what's wrong. Hi, Ive written some code to try and resize a page dependant on the content oof an iframe. Code is as follows: Code: window.onload=sizeAdj();
function sizeAdj() {
var elFrame = document.getElementById('theFrame');
var elTable = document.getElementById('tableGrab');
var elDivMain = document.getElementById('main');
var elDivWrapper = document.getElementById('wrapper');
var the_height = elFrame.contentWindow.document.body;
elFrame.height = the_height;
elTable.height = the_height + 90;
elDivMain.height = the_height + 90;
elDivWrapper.height = the_height + 465;
}
I originally thought that I would just be able to resize the iframe and the other elements would follow suit but as you can see Ive tried to resize the other encasing elements also. The code resizes partially in chrome but only to a certain point and not to the full height of the doc content. Help greatly appreciated - full source content attached. Rugby Glass.zip Thanks Sol Hi, Am making a user registration page and i want it to be smaller then my other pages and it should open in a new window, something like a popup window. How can i do this? Thanks Hi folks! Very, very new to Javascript and I'm having a problem. What I'm trying to do is create a page that uses an iframe to show the fullsized image, while using thumbnails at the bottom. I need the iframe to resize depending on the size of the image since some are landscape and others are portrait oriented. I found a script online that did it for the height of the picture so I tried to modify it to do both the width and the height and haven't had much luck. Here's the code, and I apologize in advance for my noob coding. Code: <html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Halloween 2009</title>
<script language="JavaScript">
<!--
function calcWidth()
{
//find the width of the internal page
var the_width=
document.getElementById('preview').contentWindow.
document.body.scrollWidth;
//change the width of the iframe
document.getElementById('preview').width=
the_width;
}
function calcHeight()
{
//find the height of the internal page
var the_height=
document.getElementById('preview').contentWindow.
document.body.scrollHeight;
//change the height of the iframe
document.getElementById('preview').height=
the_height;
}
//-->
</script>
<style type="text/css">
body {background: url(background/bg3.gif); text-align:center}
img {height: 5em; width:5em; display: inline; border: none}
</style>
</head>
<body>
<div style="height: 448px">
<iframe src="Halloween '09 021.jpg" name="preview" id="preview" onLoad="calcWidth();calcHeight();" marginheight="0" marginwidth="0" scrolling="no">
An iframe capable browser is required to view this web site.
</iframe>
</div>
<div id="thumbnails" style="padding-top: 1.5em; width: 40em; text-align: center">
<a href="Ariana.JPG" target="preview"><img src="Ariana.JPG" alt="" /></a>
<a href="Halloween '09 002.jpg" target="preview"><img src="Halloween '09 002.jpg" alt="" /></a>
<a href="Ayesha.jpg" target="preview"><img src="Ayesha.jpg" alt="" /></a>
ETC...
</div>
</body>
</html>
Hello i would need a 1x1 pixel image for my flagcounter,ive been trying for months [IMG*]http://2.s07.flagcounter.com/count/DymW/bg=ffffff/txt=ffffff/border=ffffff/columns=1/maxflags=1/viewers=3/labels=0/[/IMG*] (the stars for the image not to appear) helllp
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