I'm trying to use JavaScript to list images 01-40 in order automatically.
Like this:
<img src="01.jpg" />
<img src="02.jpg" />
<img src="03.jpg" />
<img src="04.jpg" />
<img src="05.jpg" />
...
I don't want to write each img src manually, as I want to use this on multiple pages
I'd like the image starting and ending number to be variables that I can edit easily.
You need the parent element for imgs:
for ( var i = FIRST_NUMBER ; i < LAST_NUMBER ; i++ ) {
var elem = document.createElement("img");
if ( i < 10 ) {
elem.setAttribute("src", "0"+i+".jpg");
} else {
elem.setAttribute("src", i+".jpg");
}
document.getElementById(PARENT_ID).appendChild(elem);
}
function img_create(startIndex, endIndex) {
for (i = startIndex; i <= endIndex; i++) {
var oImg=document.createElement("img");
oImg.setAttribute('src', i+".jpg");
//other attributes you need
document.body.appendChild(oImg);
}
}
Working example: http://jsfiddle.net/Lw3bjcx4/1/
function createImages(count, elementId) {
// Get the container element where you want to create the images
var element = document.getElementById(elementId)
// Loop count times over to create count image elements
for (var i = 0 ; i < count ; i++) {
// Create a new image element
var imageElement = document.createElement('img')
// Set the source to index.jpg where index is 0,1,2,3.... count
imageElement.setAttribute('src', i + ".jpg")
// Append the new image element to the choosen container.
element.appendChild(imageElement)
}
}
// Test to create 10 images.
createImages(10,"imgs")
You can use like this:
var imgdiv = document.getElementById('imgdiv');
var img = imgdiv.getElementsByTagName('img');
for(var i=0;i<40;i++){
img[i].src=i+'.jpg';
}
Here is an alternative to all other answers, where you don't need to use an id to put images in. Just paste the script tag where you need to have the images. For example, if you put it in a div, the script will automatically insert the images in place.
<script type="text/javascript">
var thisScriptNode = document.currentScript;
for(var i = 1 ; i <= 40 ; i++) {
var img = document.createElement("img");
img.src = ("00" + i).substr(-2) + ".jpg";
thisScriptNode.parentNode.insertBefore(img, thisScriptNode);
}
</script>
You can easily change the number of leading zeros. For example, to get numbers with three characters, replace "00" with "000" and -2 with -3.
var to = 10;
var from = 0;
for (i = from; i < to; i++){
var elem = new Element('img', { src: i + '.jpg' });
document.body.appendChild(elem);
}
it will append to <body> images with names from 0.jpg to 9.jpg
Related
I have an array of image variables that get preloaded using javascript to make an image sequence animation. The issue I have is setting the img element from HTML to use one of these images. It seems all the properies are strings?
Here's how I set the array of images in javascript:
for(var i = 0; i < 30; i ++){
anim[i] = new Image();
if(i < 10){
anim[i].src = "images/anim/frame0" + i + ".png";
}
if(i >= 10){
anim[i].src = "images/anim/frame" + i + ".png";
}
}
and I simply have an
^img tag = "animation"^
in html that I want to change.
Your code looks valid.
for(var i = 0; i < 30; i++){
anim[i] = new Image();
if(i < 10){
anim[i].src = `images/anim/frame0${i}.png`;
}
if(i >= 10){
anim[i].src = `images/anim/frame${i}.png`;
}
}
Now you can do:
document.body.appendChild(anim[0]);
I tested this and it works for me.
If you want to change src on the fly then you'd have to select the appended element and update its src like this: document.querySelectorAll('img')[0].src = newSourceVariable;.
I want to load random built src values into 20 different img.
I'm getting a random number bewtween 1 and 20, and assign it to a name using switch.
The name is part of the src value, as well as the class value.
I am trying to acces the different img, by using :nth-child() and i as variable.
jQuery(document).ready(function($){
var i=1;
while (i<20){
var n = getRandom(1, 20);
name = getName(n);
var class = $('#content div:nth-child('+i+')').attr('class');
var src = 'img/preview/'+class+'/'+name+'.jpg';
$('#content div:nth-child('+i+') img').attr('src', src);
i++;
}
});
Maybe someone can give me a hint?
var $images = $('#content img'); // Caching ffs !
for(var i = 0; i < 20; ++i) {
var name = getName(getRandom(1, 20));
$images[i].attr('src', 'img/preview/' + $images[i].attr('class') + '/' + name + '.jpg');
}
"class" is a reserved word.
I'm looking for a way to replace an image that could be used anywhere on a page.
So if we have an example html page like this:
<html>
<head>
</head>
<body>
<img id="1" src="example.com/img/1889.png">
<div style="background: url('example.com/img/1889.png')">
<div>
<a>
<img id="2" src="example.com/img/1889.png">
</a>
</body>
</html>
Where ever - example.com/img/1889.png - appears, it must be replaced with something else.
EDIT
Unfortunately I can't use any javascript libraries. Its for a browser plugin. Nor can I use browser specific APIs
There might be some syntax errors here, but basically just try something like:
<script>
var imgs = document.getElementsByTagName("img");
for (var i = 0; i < imgs.length; i++) {
if (imgs[i].src == "oldImg")
imgs[i].src = "newImg";
}
}
var divs = document.getElementsByTagName("div");
for (var i = 0; i < divs.length; i++) {
if (divs[i].style.backgroundImage == "oldImg")
divs[i].style.backgroundImage = "newImg";
}
}
</script>
The following code does what you're looking for:
var images = document.querySelectorAll('[src]'), // all image and input elements
styled = document.querySelectorAll('[style]'), // all elements with inline style
iLen = images.length,
sLen = styled.length,
url = 'example.com/img/1889.png', // the string you're searching for
str = 'some/string', // replace with whatever you choose
i;
// check for 'example.com/img/1889.png' in image source
for (i = 0; i < iLen; i += 1) {
if (images[i].src.indexOf(url) !== -1) {
images[i].src = str;
}
}
// check for 'example.com/img/1889.png' in either background or background-image
for (i = 0; i < sLen; i += 1) {
if (styled[i].style.backgroundImage.indexOf(url) !== -1) {
styled[i].style.backgroundImage = 'url(' + str + ')';
}
}
Demo
I'm trying to build a html file to prepend and replace string.
for example, if my url for css file,
<link href="/srsstore/store/-1/common/components/cbsassets/styles/iPhone.css" type="text/css" rel="stylesheet" />
And url for image file,
<img src="/s/store/-1/ProductizedWidgets/transparent.png" width="1px" height="1px"/>
Also, for background image
<div style="background-color: #e45600;background-image: url(/s/store/4812610/no_preview.gif);background-repeat:repeat-x;font-weight:bold;font-family:Helvetica, Arial, sans-serif; font-size:12px;color:#FFFFFF></div>
and I want to prepend "domain.com" to these urls. How do i search and replace a string dynamically using javascript.
The content is getting from this url:
http://euroleagueiphone.mo2do.net/s/31653/Home?ebbLinkIndex=0&backTitle=Home&iPhoneMode=app&debugRender=true&appVersion=2.2&engineVersion=1.3
You can try this:
window.onload = function() {
var domain = 'YOUR_DOMAIN';
// For images
var imgs = document.getElementsByTagName("img");
for (var i = 0; i < imgs.length; i++) {
imgs[i].setAttribute("src",domain + imgs[i].getAttribute("src"));
}
// For CSS files
var links = document.getElementsByTagName("link");
for (var i = 0; i < imgs.length; i++) {
links[i].setAttribute("href",domain + links[i].getAttribute("href"));
}
};
Edit:
For the divs add the following code to the above:
// For CSS files
var styleProp = 'background-image';
var divs = document.getElementsByTagName("div");
for (var i = 0; i < divs.length; i++) {
if(divs[i].currentStyle) {
divs[i].style['styleProp'] = domain + divs[i].currentStyle[styleProp];
} else if (window.getComputedStyle) {
divs[i].style['styleProp'] = domain + document.defaultView.getComputedStyle(divs[i],null)
.getPropertyValue(styleProp);
}
}
You can get help form Get Styles.
$("img").each(function(){
$e = $(this);
$e.attr("src","http://example.com" + $e.attr("src"));
})
$("link").each(function(){
$e = $(this);
$e.attr("href","http://example.com" + $e.attr("href"));
})
Use jquery
You need to find all the a's and img's in your code, loop through them, get the current attribute value (whether src or href), prepend your domain to it, and then set the attribute value. I haven't tested this, but this is the general idea:
var links = document.getElementsByTagName("a");
var images = document.getElementsByTagName("img");
for (i=0; i < links.length; i++) {
links[i].setAttribute("href","domain.com" + links[i].getAttribute("href"));
}
for (i=0; i < images.length; i++) {
images[i].setAttribute("src","domain.com" + images[i].getAttribute("src"));
}
I want to analyse every image of an article and set an class for all images smaller/equal than perhaps 400px (and another class for images bigger than 400px) so that I can give them a specific style.
In jQuery it would be perhaps something like this
$('div#content').find('img').each(function () {
var $this = $(this), width = $this.width();
if (width <= 400) {
$this.addClass('small_img');
}
var $this = $(this), width = $this.width();
if (width > 400) {
$this.addClass('large_img');
}
});
But I need it to be in pure Javascript. As a stupid Journalist and Webdesigner I don't get it... If you could help me, I would be very thankful.
You mean something FAST and short like this?
window.onload = function() {
var n=document.getElementById('content').getElementsByTagName('img'),
i=n.length;
while(i--){
n[i].className = n[i].clientWidth > 400 ? 'large_img' : 'small_img' ;
}
};
See this fiddle for working example.
Also read this question on SO for selecting a method to fetch the (computed) width.
window.onload = function() {
var content = document.getElementById('content');
if (content) {
var img = content.getElementsByTagName('img');
for (var i = 0, count = img.length; i < count; i++) {
if (img[i].offsetWidth <= 400) {
img[i].className += ' small_img';
} else {
img[i].className += ' large_img';
}
}
}
};
Something like this should work:
// Find the parent container 'div#content'
var container = document.getElementById( "content" ),
// Find all images within the parent
images = container.getElementsByTagName( "img" ),
// Total number of images to check
len = images.length,
// Loop counter
i = 0,
// Represents the current image in the loop
image;
// Loop through all the images
for ( ; i < len; i++ ) {
// Access the current image
image = images[ i ];
// Use the ternary operator to assign one of two classes, based on width
image.className += ( image.clientWidth > 400 ) ? " large_img" : " small_img";
}
Hope that helps. Cheers!
var contentDiv = document.getElementById('content');
var imgs = contentDiv.getElementsByTagName('img');
for(i=0;i<img.length;i++){
var img = imgs[i];
if(img.clientWidth <= 400) img.className += " small_img"
else img.className += " large_img"
}