I have been creating a site for a school project. I have everything pretty much done except for the slideshow. I have the javascript in and ready and the photos are sliding fine, but I wanted to know if there was a way to make the photos fade in and out and where I should put the "fade" function in the code? I am sure its pretty easy, but can't figure it out
I looked at the other example and I think it ahs something to do with the opacity feature, but not sure where to put it in this project?
Here is the code:
<script type="text/javascript">
var slideimages = new Array() // create new array to preload images
slideimages[0] = new Image() // create new instance of image object
slideimages[0].src = "images/jambalaya.png" // set image object src property to an image's src, preloading that image in the process
slideimages[1] = new Image()
slideimages[1].src = "images/sucio_rice.png"
</script>
</head>
<script type="text/javascript">
var step=0
function slideit(){
if (!document.images)
return
document.getElementById('slide').src = slideimages[step].src
if (step<1)
step++
else
step=0
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
slideit()
</script>
</head>
<body onLoad="MM_preloadImages('images/home_btn2.png')">
<div id="header">
<h1>
<img src="images/crab_logo_edit.png" width="652" height="140" alt="Singing Crab" />
</h1>
</div>
<div id="content" class="wrap_home">
<h2>Arriba!</h2>
<div id="slideshow">
<img src="images/jambalaya.png" id="slide" width="400" height="330" alt="Marsa Alam" />
</div>
<p>There's always a fiesta at The Singing Crab—The best Cajun food Louisiana has to offer! Heavy on the spices, The Singing Crab has the absolute best that Cajun has to offer.</p>
<h2>You'll love it. We just guarantee.</h2>
<script type="text/javascript">
//variable that will increment through the images
var step=0
function slideit(){
//if browser does not support the image object, exit.
if (!document.images)
return
document.getElementById('slide').src = slideimages[step].src
if (step<1)
step++
else
step=0
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
slideit()
</script>
</div>
Um.. Didn't get why do you have 2 slideIt() functions declared, but any way, just rewrite this function to
function slideit(){
if (!document.images) return;
$('#slide').fadeOut(150,function(){
$('#slide').attr('src', slideimages[step].src);
$('#slide').fadeIn(150);
});
step = step < 0 ? step++ : 0;
}
var intervalId = setInterval(slideIt, 2500);
This is the jQuery solution, much shorter, much more beautiful than pure js. But you can make it with js only and no libs, just add this func to your code
function fade( elem, time ){
var startOpacity = elem.style.opacity || 1;
elem.style.opacity = startOpacity;
(function go() {
elem.style.opacity -= startOpacity / ( time / 100 );
elem.style.filter = 'alpha(opacity=' + elem.style.opacity * 100 + ')';
if( elem.style.opacity > 0 )
setTimeout( go, 100 );
else
elem.style.display = 'none';
})();
}
And manipulate with it instead of jQuery fadeIn/fadeOut functions.
You can pick each, but i advise you jQuery.
Related
I am creating a website for my school project. I want to put some pictures in a slide show, but for some reason my code isnt working. Here is my code
<div class="row">
<div class="col-md-12">
<h3 class = "Contains">
<script type = "text/javascript">
var image1= new image()
image1.src=images/truck1.png
var image2= new image()
image2.src=images/truck4.png
var image3= new image()
image3.src=images/truck7.png
</script>
<img src="images/truck1.PNG" name = "slide" width ="400" height ="400">
<script>
var step =1;
function slideit(){
document.images.slide.src=eval("image"+step+".src");
if (step<3)
step++;
else
step=1;
setTimeout("slideit()", 2500);
}
slideit()
</script>
</h3>
</div>
A very basic and simple example of how you can step through an array
//Array of images
var Images = ['https://dummyimage.com/100x100/000/fff.jpg',
'https://dummyimage.com/200x200/000/fff.jpg',
'https://dummyimage.com/300x300/000/fff.jpg'
];
//Step counter
var step = 1;
function gallery() {
//change image
document.getElementById('Imgs').src = Images[step];
//Or you can use - document.images.slide.src=Images[step];
// is step more than the image array?
if (step < Images.length - 1) {
// No - add 1 for next image.
step++;
} else {
// Yes - Start from the first image
step = 0;
}
}
//When the ready, set interval.
window.onload = setInterval(gallery, 2500);
<img id="Imgs" name="slide" src="https://dummyimage.com/100x100/000/fff.jpg" />
The method you're trying will return the following errors in the browser console.
Uncaught ReferenceError: image is not defined(anonymous function)
Uncaught TypeError: Cannot read property 'src' of undefined
The browser console is your best friend when it comes to using javascript.
If you have any questions, please leave a comment below and I will get back to you as soon as possible.
If you want to stick with the same method here it is:
var step = 1;
var image1 = new Image();
image1.src = "https://dummyimage.com/100x100/000/fff.jpg";
var image2 = new Image();
image2.src = "https://dummyimage.com/200x200/000/fff.jpg";
var image3 = new Image();
image3.src = "https://dummyimage.com/300x300/000/fff.jpg";
function slideit() {
document.images.slide.src = window['image' + step].src;
if (step < 3)
step++;
else
step = 1;
setTimeout(slideit, 2500);
}
slideit();
<div class="row">
<div class="col-md-12">
<h3 class="Contains">
<img src="https://dummyimage.com/100x100/000/fff.jpg" name="slide" />
</h3>
</div>
I hope this helps. Happy coding!
Your problem is most probably in your "imagex.src=xxxxxxx". The images urls are string and must be quoted as such. So it should be :
image1.src="images/truck1.png"
Also, you try to call setTimeout with a string instead of a function reference/name. It should be :
setTimeout(slideit, 2500);
However, a setInterval would be best here instead of a setTimeout as it will call a function repetingly.
JS aside, there are some quirk in the HTML part. Mostly, you shouldn't use a H3 to wrap a div. H3 are ususaly used for page sub-titles, not for a 400x400 images ^^
As mentioned in your question comments, using eval is generaly a bad idea.
To Simplify, you could do something like this :
<div class="row">
<div class="col-md-12">
<div class="Contains">
<img src="images/truck1.PNG" name="slide" width="400" height="400">
<script>
var pictures = ["images/truck1.png",
"images/truck4.png",
"images/truck7.png"];
var step = 0;
function slideIt(){
if (step<3)
step++;
else
step=0;
document.images.slide.src=pictures[step];
}
setTimeout(slideit, 2500);
</script>
</div>
</div>
</div>
Hi I have created a slider in Javascript but I want to now change it to an interactive slider where you click on it to change slides and not just automatic. I have changed the javascript and now when I click on a slide it comes up with page not found. What have I forgotten to do. This is what I have so far.
<script type="text/javascript">
var slideimages = new Array() // create new array to preload images
slideimages[0] = new Image() // create new instance of image object
slideimages[0].src = "Photos/slide1.jpg" // set image object src property to an image's src, preloading that image in the process
slideimages[1] = new Image()
slideimages[1].src = "Photos/slide2.jpg"
slideimages[2] = new Image()
slideimages[2].src = "photos/slide3.jpg"
</script>
</head>
<body>
<header>
<div id="logo">
<img id="logo" src="Photos/logo.jpg" alt="My logo">
</div>
<div id="navigation_container">
<!-- the body -->
<div class="rectangle">
<!-- the navigation links -->
<ul id="navigation">
<li>✭ HOME</li>
<li>✭ link 2</li>
<li>✭ link 3</li>
<li>✭ link 4</li>
</ul>
<!-- end the body -->
</div>
<!-- end container -->
</div>
</header>
<div id="content-scroll">
<h1> Scrapbooking ideas</h1>
<img src="Photos/slide1.jpg" id="slide" width=550 height=300 />
<script type="text/javascript">
//variable that will increment through the images
var step = 0
var whichimage = 0
function slideit(){
//if browser does not support the image object, exit.
if (!document.images)
return
document.getElementById('slide').src = slideimages[step].src
whichimage = step
if (step<2)
step++
else
step=0
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
function slidelink(){
if (whichimage == 0)
window.location = "link1.htm"
else if (whichimage == 1)
window.location = "link2.htm"
else if (whichimage == 2)
window.location = "link3.htm"
}
slideit()
</script>
Thanks for any help
Linda
I wouldn't even use any sort of <a> tag here. I'd apply the onclick attribute suggested by sanfor directly to the <img> tag, so your code would be:
<img src="Photos/slide1.jpg" id="slide" width="550" height="300" />
Note that I used double quotes when I put in values for the width and height attributes. This is just a good practice to do. Both ways of going about it will work.
if i get it right, you want something like this.
for automatically start if user doesn't click on any of the links you can start automatically after 10 seconds using this piece of code
setTimeout(function(){slideit(0);},10000);
or user can click any of the links to start sliding with specific image associated with it before 10 seconds have passed(you can give it any specific time)
setTimeout(function(){slideit(0);},10000);
var links=document.getElementsByTagName('li');
for(i=1;i<links.length;i++){
(function(val){
links[val].addEventListener('click',function(){
slideit(val);
});
})(i);
}
//variable that will increment through the images
var step = 0;
var whichimage = 0;
function slideit(num){
//if browser does not support the image object, exit.
if (!document.images)
return
document.getElementById('slide').src = slideimages[num].src;
if (num<2)
num++;
else
num=0;
//call function "slideit()" every 2.5 seconds
setTimeout("slideit("+num+")",2500)
}
I am trying to make a responsive slider for mobile version.
Site was developed using angular JS.
When I am trying to integrate the JQuery sliders, total site was distubing because of Bootstrap CSS file.
So, in that part I founded a plain Javascript code. And in this how to make those images responsive.
Below I am adding the code.
<head>
<script type="text/javascript">
var slideimages = new Array() // create new array to preload images
slideimages[0] = new Image() // create new instance of image object
slideimages[0].src = "images/slide/1.jpg" // set image object src property to an image's src, preloading that image in the process
slideimages[1] = new Image()
slideimages[1].src = "images/slide/2.jpg"
slideimages[2] = new Image()
slideimages[2].src = "images/slide/2.jpg"
</script>
</head>
<body>
<img src="firstcar.gif" id="slide" width=100 height=56 />
<script type="text/javascript">
//variable that will increment through the images
var step = 0
var whichimage = 0
function slideit(){
//if browser does not support the image object, exit.
if (!document.images)
return
document.getElementById('slide').src = slideimages[step].src
whichimage = step
if (step<2)
step++
else
step=0
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
function slidelink(){
if (whichimage == 0)
window.location = "#"
else if (whichimage == 1)
window.location = "#"
else if (whichimage == 2)
window.location = "#"
}
slideit()
</script>
Previous answers are correct but you have to use $ for jQuery:
$(slideimages[0]).addClass("img-responsive");
WIthout jQuery:
slideimages[0].className += "img-responsive";
To add a class, just use addClass:
slideimages[0].addClass("img-responsive");
Are you just trying to add a class? I don't quite understand your question.
EDITED you simply need to do this:
function slideit(){
//if browser does not support the image object, exit.
if (!document.images)
return
document.getElementById('slide').src = slideimages[step].src
document.getElementById('slide').className = "img-responsive";
whichimage = step
if (step<2)
step++
else
step=0
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
I want to put a simple slider on orchard. I have write the code and It is working on my computer. but when I add it to orchard CMS it doesn't work. can any one help me please. the asp version is 4.5 and iis 7.5 windows server 2008. here is the code:
<html>
<head>
<script type="text/javascript">
var slideimages = new Array() // create new array to preload images
var slidenum=2
slideimages[0] = new Image() // create new instance of image object
slideimages[0].src = "emkanat1.JPG" // set image object src property to an image's src, preloading that image in the process
slideimages[1] = new Image()
slideimages[1].src = "emkanat2.JPG"
slideimages[2] = new Image()
slideimages[2].src = "emkanat3.JPG"
</script>
</head>
<body>
<div style="display: block; width:940px; height:356px;">
<img src="emkanat1.JPG" id="slide" width="940px" height="356px" />
<div >
<img style="position:absolute; margin-top: 150px; margin-left: 10px;" src=left.jpg onclick="prev()"/>
<img style="position:absolute; margin-top: 150px; margin-left: 890px;" src=right.jpg onclick="next()"/>
</div>
</div>
<script type="text/javascript">
//variable that will increment through the images
var step=0
function slideit(){
//if browser does not support the image object, exit.
if (!document.images)
return
document.getElementById('slide').src = slideimages[step].src
if (step<slidenum)
step++
else
step=0
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
function next(){
if (!document.images)
return
if (step<slidenum)
step++
else
step=0
document.getElementById('slide').src = slideimages[step].src
}
function prev(){
if (!document.images)
return
if (step>0)
step--
else
step=slidenum
document.getElementById('slide').src = slideimages[step].src
}
slideit()
</script>
</body>
</html>
You are passing "slideit()" as your first parameter to setTimeout, there are two ways this can go, you can have an implied eval where slideit() gets executed and then the result is passed to setTimeout, or you can have the string itself passed to setTimeout, neither are what you want. You should just pass the function as the first parameter of setTimeout.
change
setTimeout("slideit()",2500)
to
setTimeout(slideit,2500)
and you should be fine.
<p align="center">
<button onclick="slideit()">Run the loop</button>
<!-- Start Weather Image Loop -->
<img src="firstcar2.gif" name="slide" width="900" height="500" />
<script type="text/javascript">
<!--
var imagevis1=new Image()
imagevis1.src="http://www.ssec.wisc.edu/data/us_comp/big/image1.jpg"
var imagevis2=new Image()
imagevis2.src="http://www.ssec.wisc.edu/data/us_comp/big/image2.jpg"
var imagevis3=new Image()
imagevis3.src="http://www.ssec.wisc.edu/data/us_comp/big/image3.jpg"
var imagevis4=new Image()
imagevis4.src="http://www.ssec.wisc.edu/data/us_comp/big/image4.jpg"
var imagevis5=new Image()
imagevis5.src="http://www.ssec.wisc.edu/data/us_comp/big/image5.jpg"
var imagevis6=new Image()
imagevis6.src="http://www.ssec.wisc.edu/data/us_comp/big/image6.jpg"
var imagevis7=new Image()
imagevis7.src="http://www.ssec.wisc.edu/data/us_comp/big/image7.jpg"
var imagevis8=new Image()
imagevis8.src="http://www.ssec.wisc.edu/data/us_comp/big/image8.jpg"
var imagevis9=new Image()
imagevis9.src="http://www.ssec.wisc.edu/data/us_comp/big/image9.jpg"
var imagevis10=new Image()
imagevis10.src="http://www.ssec.wisc.edu/data/us_comp/big/image10.jpg"
var imagevis11=new Image()
imagevis11.src="http://www.ssec.wisc.edu/data/us_comp/big/image11.jpg"
var imagevis12=new Image()
imagevis12.src="http://www.ssec.wisc.edu/data/us_comp/big/image12.jpg"
var imagevis13=new Image()
imagevis13.src="http://www.ssec.wisc.edu/data/us_comp/big/image13.jpg"
var imagevis14=new Image()
imagevis14.src="http://www.ssec.wisc.edu/data/us_comp/big/image14.jpg"
var imagevis15=new Image()
imagevis15.src="http://www.ssec.wisc.edu/data/us_comp/big/image15.jpg"
var imagevis16=new Image()
imagevis16.src="http://www.ssec.wisc.edu/data/us_comp/big/image16.jpg"
var imagevis17=new Image()
imagevis17.src="http://www.ssec.wisc.edu/data/us_comp/big/image17.jpg"
var imagevis18=new Image()
imagevis18.src="http://www.ssec.wisc.edu/data/us_comp/big/image18.jpg"
var imagevis19=new Image()
imagevis19.src="http://www.ssec.wisc.edu/data/us_comp/big/image19.jpg"
var imagevis20=new Image()
imagevis20.src="http://www.ssec.wisc.edu/data/us_comp/big/image20.jpg"
var imagevis21=new Image()
imagevis21.src="http://www.ssec.wisc.edu/data/us_comp/big/image21.jpg"
var imagevis22=new Image()
imagevis22.src="http://www.ssec.wisc.edu/data/us_comp/big/image22.jpg"
var imagevis23=new Image()
imagevis23.src="http://www.ssec.wisc.edu/data/us_comp/big/image23.jpg"
var imagevis24=new Image()
imagevis24.src="http://www.ssec.wisc.edu/data/us_comp/big/image24.jpg"
var imagevis25=new Image()
imagevis25.src="http://www.ssec.wisc.edu/data/us_comp/big/image24.jpg"
//-->
</script>
<script>
<!--
//variable that will increment through the images
var step=1
function slideit(){
//if browser does not support the image object, exit.
if (!document.images)
return
document.images.slide.src=eval("imagevis"+step+".src")
if (step<25)
step++
else
step=1
//call function "slideit()" every 2.5 seconds
if (step<25)
{
setTimeout("slideit()",100)
}
else
{
setTimeout("slideit()",1500)
}
}
slideit()
//-->
</script>
<!-- End Weather Image Loop -->
</p>
I am trying to load this script with the click of a button, but when I place the lower script in a function, and load it with the button, it does not start the loop. For whatever reason, it sometimes says that slideit() is not defined, or that the first image (imagevis1) is not defined.
Thank you for your help!
The reason why yours is not working is the fact you never removed the slide() call which starts it off. You would need to remove that and the code would work with the button click.
setTimeout("slideit()",1500)
}
}
slideit() <-- REMOVE THIS LINE
//-->
</script>
<!-- End Weather Image Loop -->
But the code has other issues. I wrote this rather quick, but this is a little better than what you have. The preload could be done differently if they are not loading in time.
HTML :
<img src="" id="slideshow" />
<button id="btn">Animate</button>
JavaScript:
(function () {
var srcStart = "http://www.ssec.wisc.edu/data/us_comp/big/image",
srcEnd = ".jpg",
start = 1,
end = 24,
current = start,
shortDelay = 100,
longDelay = 1500,
elem = document.getElementById("slideshow"),
btn = document.getElementById("btn"),
isPreload = true;
function next() {
var delay = shortDelay;
elem.src = srcStart + current + srcEnd;
current++;
if(current!==end) {
var img = new Image();
img.src = srcStart + (current+1) + srcEnd;
}
if(current>end) {
current = start;
delay = longDelay;
}
window.setTimeout(next,delay);
}
btn.onclick = next;
})();
Example:
http://jsfiddle.net/L7qUY/
Make sure you don't have the function slideit() defined inside your wrapper function.
//variable that will increment through the images
var step=1;
function slideit(){
//if browser does not support the image object, exit.
if (!document.images) {
return;
}
document.images.slide.src=eval("imagevis"+step+".src");
if (step<25) {
step++;
} else {
step=1;
}
//call function "slideit()" every 2.5 seconds
if (step<25) {
setTimeout("slideit()",100);
} else {
setTimeout("slideit()",1500);
}
}
var button = document.getElementById("YourButtonID");
button.addEventListener("click", slideit);
You need the image tag named slide because your javascript uses that attribute to target the image tag to update document.images.slide.src=eval("imagevis"+step+".src");.
Also make sure that your setTimeout methods have the times you intend. Your comment says you want to call slideit() every 2.5 seconds but your calls are using 100 and 1500 milliseconds which is .1 and 1.5 seconds respectively.
I'm guessing you are trying to write an animation or something.
html
<img src='http://www.ssec.wisc.edu/data/us_comp/big/image1.jpg' id="weatherImg" width="400" />
<input type="button" id="animate" onclick="animate()" value="tiempo" />
JavaScript
currImg=0;
images = [
"http://www.ssec.wisc.edu/data/us_comp/big/image1.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image2.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image3.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image4.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image5.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image6.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image7.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image8.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image9.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image10.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image11.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image12.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image13.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image14.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image15.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image16.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image17.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image18.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image19.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image20.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image21.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image22.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image23.jpg"
,"http://www.ssec.wisc.edu/data/us_comp/big/image24.jpg"
//,"http://www.ssec.wisc.edu/data/us_comp/big/image25.jpg"
];
aniClock = 0;
animate = function(){
clearTimeout(aniClock);
if (typeof images[currImg] == "undefined"){
//alert('ho');
//return false;
currImg = 0;
}
document.getElementById("weatherImg").src = images[currImg];
currImg++;
aniClock = setTimeout(function(){animate();},300);
}
Example
http://jsfiddle.net/chepe263/bVye6/