http://www.9gag.com
I want pause and play a gif,like the 9gag,
how can i do that?
I know I have to use one. Jpg and. Gif but I tried a few things but did not work
I found this function
function is_gif_image(i) {
return /^(?!data:).*\.gif/i.test(i.src);
}
function freeze_gif(i) {
var c = document.createElement('canvas');
var w = c.width = i.width;
var h = c.height = i.height;
c.getContext('2d').drawImage(i, 0, 0, w, h);
try {
i.src = c.toDataURL("image/gif"); // if possible, retain all css aspects
} catch(e) { // cross-domain -- mimic original with all its tag attributes
for (var j = 0, a; a = i.attributes[j]; j++)
c.setAttribute(a.name, a.value);
i.parentNode.replaceChild(c, i);
}
}
function unfreeze_gif(id, src) {
i = document.getElementById(id);
i.src = src;
}
but i dont know how to use on the HTML
Can someone give me an example? with HTML , CSS E JS (or Jquery) ?
Thanks
It's just 2 versions of the image: One static JPG, one moving GIF.
Here's a fiddle that mimic the behaviour: http://jsfiddle.net/bortao/QADeM/
JS
$(".gif-post").on("click", function () {
var $this = $(this);
var img = $this.find("img"); // Find the image element
if (!this.playing) {
this.playing = true; // Set or create a variable
img.attr("src", img.attr("src").replace(".jpg", "a.gif"));
$this.find(".play").hide(); // Hide the overlay
} else {
this.playing = false;
img.attr("src", img.attr("src").replace("a.gif", ".jpg"));
$this.find(".play").show();
}
});
I was actually working on a 9gag clone myself, so i was searching as well for a gif player.
You can use this one: http://freezeframe.chrisantonellis.com/
All you have to do for this one is include the javascript and in the .gif link and add the following class: "freezeframe"
There is also this one: http://quickleft.com/blog/embeddable-animated-gifs-with-controls-just-in-time-for-christmas
I haven't used it, but it seems very interesting.
Related
Please answer this question, as I am struggling a lot with it.
I am trying to change image source on mouse over. I am able to do it, but image is not displaying on page.
I am trying to change image source to cross domain URL. I can see that in DOM image source is changing but on page its not.
I have tried all solutions mentioned in LINK, but none of them is working.
Please let me solution to problem.
NOTE:
I can see in network tab image is taking some time to download (about 1 sec).
It is an intermediate issue, sometime image is loading and sometimes its not
CODE:
document.getElementsByTagName('img')[0].addEventListener('mouseover', function()
{
document.getElementsByTagName('img')[0].setAttribute('src', 'url/of/the/image');
});
have you tried loading images before everything else?
function initImages(){
var imC = 0;
var imN = 0;
for ( var i in Images ) imN++;
for(var i in Images){
var t=Images[i];
Images[i]=new Image();
Images[i].src=t;
Images[i].onload = function (){
imC++;
if(imC == imN){
console.log("Load Completed");
preloaded = 1;
}
}
}
}
and
var Images = {
one image: "path/to/1.png",
....
}
then
if( preloaded == 1 ){
start_your_page();
}
Here the code that will remove the img tag and replace it with a new one:
document.getElementsByTagName('img')[0].addEventListener('mouseover', function() {
var parent = document.getElementsByTagName('img')[0].parentElement;
parent.removeChild(document.getElementsByTagName('img')[0]);
var new_img = document.createElement("img");
new_img.src = "https://upload.wikimedia.org/wikipedia/commons/6/69/600x400_kastra.jpg";
parent.appendChild(new_img);
});
<img src="https://www.w3schools.com/w3images/fjords.jpg">
I resolved the issue using code:
function displayImage() {
let image = new image();
image.src="source/of/image/returned/from/service";
image.addEventListener('load', function () {
document.getElementsByTagName('img')[0].src = image.src;
},false);
}
Here in code, I am attaching load event to image, source of image will be changed after image is loaded.
I want to refresh an image every 1 second. This picture is dynamically generated by my webcam, but this script sometimes display broken images when browser didnt yet load a picture before display. How to detect when picture is loaded and then change the diplay picture?
I have a code like this:
<img id="image" src="webcam.jpg">
<script>
setInterval(function() {
var myImageElement = document.getElementById('image');
myImageElement.src = 'webcam.jpg?rand=' + Math.random();
}, 1000);
</script>
You should wait for the image to be loaded first, before replacing it.
For this, you can use different approaches. What I usually do, is to create another image which is not visible and replace the one visible once the previous image is loaded.
Your code should look like this if you want to follow this approach:
<img id="image" src="webcam.jpg">
<script>
setInterval(function() {
var url = 'webcam.jpg?rand=' + Math.random();
var img = new Image();
img.src = url;
img.addEventListener('load', function() {
var myImageElement = document.getElementById('image');
myImageElement.src = url;
});
}, 1000);
</script>
What you can also do is play with css styles to make the image hidden or visible depending on the state, but that would make your image appear and disappear which is a bit ugly...
I hope it helps :)
I think you can use something like this:
var _img = document.getElementById('pic'),
urlToImage = 'pic.jpg',
modified = false, lastModified = 0;
setInterval(function(){
fetch(urlToImage)
.then(function(resp){
var f = new File([resp],"file");
switch(true) {
case modified === false:
lastModified = f.lastModified;
modified = true; break;
default:
modified = false;
if(lastModified < f.lastModified) {
modified = true;
}
}
return resp.blob();
})
.then(function(blobdata){
switch(true) {
case modified === true:
var obj_url = URL.createObjectURL(blobdata);
_img.src = obj_url;
break;
}
});
},1000);
<img src="" id="pic" alt="LOCAL pic here"/>
I think that looking at lastModified time in File properties is a good way to assume image was finished written on the server.
Hope this helps.
Try using this after loading the document
$( document ).ready(function() {
setInterval(function() {
var myImageElement = document.getElementById('image');
myImageElement.src = 'webcam.jpg?rand=' + Math.random();
}, 500);
});
Hope this helps
And it's saddening. Some background, I'm new to Javascript and this is my first application of in life, and since plowing halfway through half a Javascript textbook in two days. It's an external file that's linked to at the end of my HTML. If any more is required, please ask and I'll do my best to provide.
var slide = document.getElementById("slide");
setInterval(slideshow.changeSrc, 5000);
var slideshow = {
changeSrc : function() {
if(slide.src === "./images/s1.png"){
slide.src = "./images/s2.png";
}
else if(slide.src === "./images/s2.png"){
slide.src = "./images/s3.png";
}
else{
slide.src = "./images/s1.png";
}
}
}
slide.addEventListener("load", slideshow.changeSrc, false);
The src property is the result of the browser resolving the URL you give it. Do not use it for comparisons. In addition, only the window and certain elements such as images or scripts have load events. Try this:
Instead, why not just keep track of an index?
(function() {
var id = 0, slide = document.getElementById('slide');
setInterval(function() {
id++;
slide.src = "images/s"+id+".png";
id %= 3;
},5000);
})();
I think this is what you are trying to achive:
var slide = document.getElementById("slide");
var slideshow = {
changeSrc : function() {
setTimeout(function() {
slide.src = 'http://lorempixel.com/100/100';
}, 1000);
}
}
slide.addEventListener("load", slideshow.changeSrc, false);
http://jsfiddle.net/Bs4gM/
I am trying to load images throught javascript. Different browser than IE8 or ie9 it's working fine, but in IE doesn't. If I load the image directly
http://localhost/_eWar/index.php?road=map&createimage=true
it's working fine, but trought javascript
src="index.php?road=map&createimage=true";
this.img_object.object = $("<img>");
this.img_object.object.unbind('load').
removeAttr("src").
removeAttr("width").
removeAttr("height").
attr("class","map newMap").
attr("usemap","#world").
css({ top: 0, left: 0 }).
load(function(){
me.image_loaded = true;
me.img_object.display_width = me.img_object.orig_width = this.width;
me.img_object.display_height = me.img_object.orig_height = this.height;
if(!me.container.hasClass("iviewer_cursor")){
me.container.addClass("iviewer_cursor");
}
if(me.settings.zoom == "fit"){
me.fit();
}
else {
me.set_zoom(me.settings.zoom);
}
if(me.settings.onFinishLoad)
{
me.settings.onFinishLoad.call(me);
}
//src attribute is after setting load event, or it won't work
}).attr("src",src);
I get a "compatible view" message.
I'm not sure why you're resetting and looking at attributes on a new image.
Here's an easy way to load images:
function loadSample() {
var i = new Image()
i.onload = function() {
alert("loaded")
}
i.src = "http://jsfiddle.net/img/logo.png"
}
This code is meant for a real estate website I am updating for my company. Basically, There is a table with the property name, address, etc, and an image. Originally, I was coding this website in ASP.net switch over to regular Javascript for a few reasons (hosting overhead etc).
Sections of this code are from a few different tutorials out there, one of which is an ASP.net modal div image "enlarger" tutorial, which is sort of the basis combined with a few other sites. I have yet to comment in their names etc, but I plan on giving them credit in the code. Thier links are below before I post my code.
http://archive.aspsnippets.com/post/2009/07/06/Image-Gallery-using-ASPNet-GridView-control.aspx
My code is essentially as follows (I will trim the fat and excess line breaks in the style section):
First are the modal style tags from that tutorial by Mudassar Khan (partially relevant):
<style>
body {margin:0;padding:0;height:100%;}
.modal {display: none;position: absolute;top: 0px;left: 0px;background-color:black;z-index:100;opacity: 0.8; filter: alpha(opacity=60);-moz-opacity:0.8;min-height: 100%;}
&#divImage{display: none;z-index: 1000;position: fixed;top: 0;left: 0;background-color:White;height: 550px;width: 600px;padding: 3px;border: solid 1px black;}
<style>
Then comes his script, which I may have tweaked here and there:
<script type="text/javascript">
function LoadDiv(url) {
var img = new Image();
var bcgDiv = document.getElementById("divBackground");
var imgDiv = document.getElementById("divImage");
var imgFull = document.getElementById("imgFull");
var imgLoader = document.getElementById("imgLoader");
img.src = url;
var tcopy = img.src.slice(0,(img.src.length-4)) + "_big.png";
img.src = tcopy;
img.onload = function () {
imgFull.src = tcopy
imgFull.style.display = "block";
imgLoader.style.display = "none";
};
var width = document.body.clientWidth;
if (document.body.clientHeight > document.body.scrollHeight) {
bcgDiv.style.height = document.body.clientHeight + "px";
}
else {
bcgDiv.style.height = document.body.scrollHeight + "px";
}
imgDiv.style.left = (width - 650) / 2 + "px";
imgDiv.style.top = "20px";
bcgDiv.style.width = "100%";
bcgDiv.style.display = "block";
imgDiv.style.display = "block";
return false;
}
function HideDiv() {
var bcgDiv = document.getElementById("divBackground");
var imgDiv = document.getElementById("divImage");
var imgFull = document.getElementById("imgFull");
imgLoader.style.display = "block"; // I added as it seems to bring back the loader gif
if (bcgDiv != null) {
bcgDiv.style.display = "none";
imgDiv.style.display = "none";
imgFull.style.display = "none";
}
}
</script>
Now All this above script gets called upon a onClick Event Handler on an image of each of the real estate companies properties. This will work well to both preload images with the little animated gif and the close button works fine. It works on more than one image, BUT if the image is already preloaded, I cant think of a way to force the redisplay of an already preloaded image if a user clicks on the photo, then clicks close to hide the div tag and then clicks on the same preloaded image.
That event handler looks like this:
img onClick="return LoadDiv(this.src);" src="http://www.ourcompany.com/images/prop_thumbs/Some_plaza.png" style="min-width:200 px;max-height:150 px;max-width:200 px;"
I thought global booleans would work, but then I realized, theres no telling which and what is preloaded, so the boolean might not help if you can't pass something meaningful back and forth.
I'm not asking any one to do my work for me, however I would appreciate suggestions in the right direction.
Regards and TIA!
You could make a array of all of the images with key values of loaded. For instance.
image_list = {image1:false,image2:true,image3:false};
true and false being loaded or not loaded. When an image is clicked just update the array.
image_list[image1] = true;
Did this really quick, so my syntax might be off, feel free to correct me or berate me...
Yay!!! Figured it out with the help of both jhanifen and the guy who did the tutorial I used (he actually emailed me). My code is below (its an excerpt, but you'll get the idea):
images = new Array(30);
//need to define each image to be in array
images[0]="website/images/prop_thumbs/property1_big.png";
images[1]="website/images/prop_thumbs/property2_big.png";
images[2]="website/images/prop_thumbs/property3_big.png";
//This continues for some time
imagesLoaded = new Array(30);
// per stack overflow person suggestion make array of bool values; initialize them all to false on page load
function onLoadScript() {
for (i = 0; i < imagesLoaded.length; ++ i)
{
imagesLoaded [i] = false;
}
}
// the above is called onLoad in body tag
// Changes the script for Loading the Div tag are below:
function LoadDiv(imgNum) {
var img = new Image();
var bcgDiv = document.getElementById("divBackground");
var imgDiv = document.getElementById("divImage");
var imgFull = document.getElementById("imgFull");
var imgLoader = document.getElementById("imgLoader");
img.src = images[imgNum];
if(imagesLoaded[imgNum] = true)
{ // this statement triggers same as onload below!
imgFull.src = img.src
imgFull.style.display = "block";
imgLoader.style.display = "none";
}
img.onload = function () {
imgFull.src = img.src
imgFull.style.display = "block";
imgLoader.style.display = "none";
imagesLoaded[imgNum] = true;
};
The rest of the document is the same except I changed the onClick event handler for the property images to LoadDiv(and some sequential number);
Thanks to all for your help! Particular props to both Mudassar Khan and jhanifen!