I have set of images named as img1, img2, img3, img4,......., imgx. So, I want to code a JavaScript to display an image img1 at document.onload() and on first click image to be changed to img2 next on second click the image to be changed at img3 and then same to the next image on every NEXT button click. In this manner I need even PREVIOUS button to go back to the previously viewed images.
How to implement this?
var currentImage = 1;
window.onload = function() {
showImage();
};
document.getElementById("next").onclick = function() {
currentImage++;
showImage();
}
function showImage() {
document.getElementById("image").src = "img" + currentImage + ".jpg";
}
These are the basics and should help you get started. If you need help implementing the rest, ask us what you want to do specificially and what you tried. Hint, you'll need to handle the case where there is no "next" image to show. Do you want it to come back to the beggining or just not work?
<script type="text/javascript">
var images = new Array("img/image1.jpg", "img/image2.jpg", "img/image3.jpg");
var cur_image = 0;
function goNextImage() {
var img = document.getElementById('image');
cur_image++;
if (cur_image == images.length) {
cur_image = 0;
}
img.src = images[cur_image];
}
</script>
<img src="img/image1.jpg" id="image" onclick="goNextImage()" />
Related
I'm pretty new to JS and programming altogether so I'm sorry in advance if the explanation is a little sloppy, but I'll try to make it as clear as possible.
So what I'm trying to do is have a JS code that reads and displays (in an HTML page) photos from a PC folder, makes them clickable and on the click it redirects you to a page with the same photo but in high resolution.
Now, I have this piece of code that displays the said pictures, but the thing is I don't seem to be able to figure out how to "connect" it to the pictures and make them clickable. What makes it more difficult is that I'm trying to make all of this code dynamic (as you can see I've done in the below code), so I would like not to have any hardcoded titles of pictures and so on.
var index = 1;
var tempImg = new Image();
tempImg.onload = function(){
appendImage();
}
var tryLoadImage = function(index){
tempImg.src = 'img/' + index + '.jpg';
}
var appendImage = function(){
var img = document.createElement('img');
img.src = tempImg.src;
document.body.appendChild(img)
tryLoadImage(index++);
}
tryLoadImage(index);
Any help is very much appreciated, thank you very much!
You can make your images clickable by adding an onclick function to them. Try something like this:
var appendImage = function(){
var img = document.createElement('img');
img.src = tempImg.src;
img.onclick = e => {
// do something you want to show the full picture like this maybe
var el = document.getElementById("fullpictureid");
if (el && e.target.src) {
el.src = e.target.src;
// so that it sets "src" in <img id="fullpictureid"> for example
}
};
document.body.appendChild(img)
tryLoadImage(index++);
}
I'm making a slideshow in javascript for a class assignment and I have the slideshow working but it's not displaying the images. I can see that the image icon changes but the actual image is not showing.
<script type="text/javascript">
//put images in array
var pics = new Array();
pics[0] = new Image();
pics[0].src = "images/forest.jpg";
pics[1] = new Image();
pics[1].src = "images/mountains.jpg";
pics[2] = new Image();
pics[2].src = "images/nature.jpg";
pics[3] = new Image();
pics[3].src = "images/snowtops.jpg";
var index = 0; //start point
var piclength = pics.length - 1;
function slideshow() {
document.slide.src = pics[index];
if (index < piclength) {
index++;
}
else {
index = 0;
}
}
function slide() {
setInterval(slideshow, 3000);
}
</script>
<body onload="slide()">
<h1>Nature Photography</h1>
<main>
<section>
<p>I am an enthusiastic about nature photography. Here is a slideshow of my
works.</p>
<aside> <img id="myImage" src="images/forest.jpg" name="slide" width="95%">
</aside>
First, I would put the script tag after your HTML. This will allow you to cache DOM elements without waiting for the "DOMContentLoaded" event or the "load" (window) event to be fired.
Second, you should cache the "myImage" element. Something like const slider = document.getElementById('myImage').
Third, check your console. Maybe your image URLs are wrong? And make sure your HTML is valid. From what you posted, you are missing a lot of things (doctype, html/head tags, you didn't close body tag and similar)
I want a gif to play when clicked, and to stop when clicked again. I'm following this method: http://www.hongkiat.com/blog/on-click-animated-gif/
So far, I have:
HTML
<figure>
<img src="test.png" alt="Static Image" data-alt="test.gif"/>
</figure>
<script src="playGif.js" type="text/javascript"></script>
playGif.js
(function($) {
// retrieve gif
var getGif = function() {
var gif = [];
$('img').each(function() {
var data = $(this).data('alt');
gif.push(data);
});
return gif;
}
var gif = getGif();
// pre-load gif
var image = [];
$.each(gif, function(index) {
image[index] = new Image();
image[index].src = gif[index];
});
// swap on click
$('figure').on('click', function() {
var $this = $(this),
$index = $this.index(),
$img = $this.children('img'),
$imgSrc = $img.attr('src'),
$imgAlt = $img.attr('data-alt'),
$imgExt = $imgAlt.split('.');
if($imgExt[1] === 'gif') {
$img.attr('src', $img.data('alt')).attr('data-alt', $imgSrc);
} else {
$img.attr('src', $imgAlt).attr('data-alt', $img.data('alt'));
}
});
})(jQuery);
Instead of swapping the content of src and data-alt, this only puts data-alt into src, and data-alt remains the same.
The gif does play on click, but if clicked again it reloads the gif instead of reverting to the png (at least in Chrome and Firefox. IE just does nothing on further clicks).
So here is the finished jsfiddle: https://jsfiddle.net/2060cm1c/
It is a simple variable swapping problem:
a=1;b=2;
a=b;// now a=2
b=a;// a=2, b=a=2
To solve it, you need a temporary variable:
a=1;b=2;
temp=a;a=b;
b=temp;
Now solve the OP's problem:
var temp=$img.attr('src');
$img.attr('src', $imgAlt).attr('data-alt', temp);
So, the problem is as easy as swapping 2 variables. You don't need the if to check the extension.
I am using setInterval for change image on mouse over, I want that set interval call again after or next interval comes after only when image loaded..
Following is my code:
jQuery('.product').on('mouseover',function(){
timer = setInterval(function() {
if (counter !== 0) {
time = 2000;
}
if (counter === product_images.length) {
counter = 0;
}
selector.attr('src', 'localhost/product/' + product_images[counter]);
var loadImage = new Image();
loadImage.src = selector.attr('src');
loadImage.onload = function(){
selector.show();
};
counter = counter + 1;
},1000);
});
What i want that before coming next image using set interval time next image should not be loaded until previous one not loaded... and in that time i want display loading image
How could i do it with jquery promise or by other solution.
Please help me...
One more thing i do not want to called next interval until first image not loaded
you can use document.ready
call the function inside document.ready so once the page is completely loaded your function will be called
first Load the images when page is loading in header,then those image will be in browser cache then it works fine,
Just Try this :
if (document.images) {
img1 = new Image();
img1.src = "imgpath/image1.png";
img2 = new Image();
img2.src = "imgpath/image2.png"";
}
I have 6 pictures of the lovely Serena Williams, I've been researching how to change the images every time I click on them. However the code is not working, please help me identify whether I've made a logic or syntax error:
<html>
<head>
<title>SerenaWilliams</title>
</head>
<body>
<img src="http://1.bp.blogspot.com/-hGUyOlpoeB0/UROyeHgMXcI/AAAAAAAAAZ4/L32zLAQvQj0/s1600/Hot-Serena-Williams+_sexy+16.jpg" id="serenaGallery" onclick="changeImage" />
</body>
<script type="text/javascript">
function changeImage() {
var currentImage = document.getElementById("serenaGallery").src;
var image1 = "http://1.bp.blogspot.com/-hGUyOlpoeB0/UROyeHgMXcI/AAAAAAAAAZ4/L32zLAQvQj0/s1600/Hot-Serena-Williams+_sexy+16.jpg";
var image2 = "http://usatthebiglead.files.wordpress.com/2011/04/serena-williams-is-big-boned.jpg";
var image3 = "http://www.strangecosmos.com/images/content/109963.jpg";
var image4 = "http://1.bp.blogspot.com/-HiJxcIjMmFg/UWo9JtbfCEI/AAAAAAAAF1g/aUU42F3V9Ic/s1600/Serena+Williams+Hot+2013+04.jpg";
var image5 = "http://mystarclub.com/wp-content/uploads/2012/11/Serena-Williams-is-a-Bikini-Babe.jpg";
var image6 = "http://1.bp.blogspot.com/-vCsx4sswzeM/UA5GtbEwJ1I/AAAAAAAAACE/tMiP_p-0rB0/s1600/serena+williams+tennis+ball+in+butt.jpg";
if (currentImage==image1){ currentImage=image2; }
if (currentImage==image2){ currentImage=image3; }
if (currentImage==image3){ currentImage=image4; }
if (currentImage==image4){ currentImage=image5; }
if (currentImage==image5){ currentImage=image6; }
else { currentImage=image1; }
}
</script>
</html>
First of all, you need to modify the onclick attribute so it will actually execute the function:
onclick="changeImage()"
The command
var currentImage = document.getElementById("serenaGallery").src;
just stores the source attribute of the image in a variable; it doesn't reference it.
Also, you have to change all if statements to else if or the function will change image1 to image2, then to image3, etc.
This would work:
var currentImage = document.getElementById("serenaGallery");
...
if (currentImage.src == image1){ currentImage.src=image2;}
else if (currentImage.src == image2){ currentImage.src=image3;}
...
Lastly, using an array for the image sources would allow you to condense the if statements into a single for loop. Not really needed for six images, but better if you want to add more.