putting javascript slide show in orchard cms - javascript

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.

Related

How to click through images stored in var in javascript

I need to on the click of the first image, for it to switch to the second image, and then on the click of that to switch to the third image and so on and so on.
I have this so far, and it only goes to the second image and stops there, or goes instantly to the third...
<img id="imgClickAndChange" class="art_shop" name="pic" src="images/edited_images/1.jpg" style="display: none;" onClick="changeImage();changeImageAgain();">
<script language="javascript">
function changeImage() {
if (document.getElementById("imgClickAndChange").src = "images/edited_images/1.jpg")
{
document.getElementById("imgClickAndChange").src = "images/edited_images/2.jpg";
}
}
</script>
<script language="javascript">
function changeImageAgain() {
if (document.getElementById("imgClickAndChange").src == "images/edited_images/2.jpg")
{
document.getElementById("imgClickAndChange").src = "images/edited_images/3.jpg";
}
}
</script>
I have also this example, which i pulled from another thing i did a while ago. It's an image slider, with the images already stored in the header, and they load the new image in every X seconds. Is there any way to modify this to load the next image on the click of a button (or the image itself) as opposed to it being timed? Either solution would work. Thanks
<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/edited_images/1.jpg" // set image src property to image path, preloading image in the process
slideimages[1] = new Image()
slideimages[1].src = "images/edited_images/2.jpg"
slideimages[2] = new Image()
slideimages[2].src = "images/edited_images/3.jpg"
slideimages[3] = new Image()
slideimages[3].src = "images/edited_images/4.jpg"
</script>
</head>
<img id="imgClickAndChange" class="art_shop" name="pic" src="images/edited_images/1.jpg" style="display: none;" onClick="changeImage();changeImageAgain();">
<script type="text/javascript">
//variable that will incement through the images
var step=0
function slideit(){
if (!document.images)
return
document.getElementById('imgClickAndChange').src = slideimages[step].src
if (step<1)
document.getElementById('imgClickAndChange').src = slideimages[step].src
if (step<2)
document.getElementById('imgClickAndChange').src = slideimages[step].src
if (step<3)
step++
else
step=0
setTimeout("slideit()",1000)
}
slideit()
</script>
You can make it much simpler. Also I would not recommend preloading the images as it slows down your pageload.
Try this:
EDIT: without looping
<img id="imgClickAndChange" class="art_shop" name="pic" onClick="changeImage()">
<script>
// image sources in array. image[0] will have first image src, image[3] will have last src
var images = [
"images/edited_images/1.jpg",
"images/edited_images/2.jpg",
"images/edited_images/3.jpg",
"images/edited_images/4.jpg"
]
var step = 0;
changeImage(); // set first image src after page loads
function changeImage() {
// exit if no images, or step = number of items in array (4)
if (typeof images == "undefined" || step == images.length) return;
document.getElementById('imgClickAndChange').src = images[step];
step++;
}
</script>

How to add the img-responsive class in javascript

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)
}

Add a FadeOut/FadeIn to a slideshow

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.

slideshow in html using javascript.. image changes but not displayed properly

i tried this code.. but when the image changes it is not displayed properly..
alt image(a small broken image is displayed)..
i tried putting var step=1; before the function as global variable.. But still it does not work.. I even tried document.images.slide.src = "images/pentagg.jpg";
<head>
<script type="text/javascript">
var image1 = new Image()
image1.src = "images/pentagg.jpg"
var image2 = new Image()
image2.src = "images/promo.jpg"
</script>
</head>
<body>
<p><img src="images/pentagg.jpg" width="500" height="300" name="slide" /></p>
<script type="text/javascript">
function slideit()
{
var step=1;
document.images.slide.src = eval("image"+step+".src")
if(step<2)
step++
else
step=1
setTimeout("slideit()",2500)
}
slideit()
</script>
</body>
There's something wrong you did. You made the step variable available inside slideit() function only by declaring it as a local variable. So everytime the function is being called using setTimeOut a new step variable is created. That causes never to change your initial image.
And I prefer this as the appropriate way to call the slideit function using setTimeOut
setTimeout(function(){slideit()},2500);
That's it. Here's the full code :
HTML :
<img src="http://picpuddle.com/wp-content/uploads/2014/06/cute-cartoons-21.jpg" width="500" height="300" name="slide" />
javaScript :
var step=1;
var image1 = new Image();
image1.src = "http://picpuddle.com/wp-content/uploads/2014/06/cute-cartoons-21.jpg";
var image2 = new Image();
image2.src = "http://www.hdwallpapers-3d.com/wp-content/uploads/2014/03/Cartoon-6.jpg";
function slideit()
{
//This looks better though
//document.getElementsByName("slide")[0].src = eval("image"+step+".src");
document.images.slide.src = eval("image"+step+".src");
if(step<2)
step++;
else
step=1;
setTimeout(function(){slideit()},2500);
}
slideit();
jsFiddle
you can't pass the image variable as an argument like that. it's taking a string called "image1.src".
try putting them in an array then getting the index with your step variable.

How to run javascript image slideshow via external js file?

i have this slider on my website ans is working fine ... it is just and image changer which changes the images on the slide show and its code is written in the main.html file is this
<img src="images/1.jpg" name="slide" width="100%" height="368" />
<script>
<!--
var image1=new Image()
image1.src="images/1.jpg"
var image2=new Image()
image2.src="images/4.jpg"
var image3=new Image()
image3.src="images/3.jpg"
//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("image"+step+".src")
if (step<3)
step++
else
step=1
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
slideit()
//-->
</script>
now its working absolutely fine.. all what i want is that i have a file name page1.js i want to put my javascript code in that file instead of my main.html file.. please tell me how i put this javascript code in that page1.js file and call it so that the image slide show will work fine as it is working now having the javascript code in the same file..
Put your javascript from above into a file named my-slides.js, and then replace the script tag in your current HTML file with this one:
<script type="text/javascript" src="my-slides.js"></script>
Ensure that my-slides.js is in the same folder as your HTML file, otherwise change the path accordingly.
FWIW, although you have not asked for this in your question, I think I should also mention the following:
Consider using curly braces to define code blocks in if and else blocks, even when it is a single line. Really improves code readability
This line: document.images.slide.src=eval("image"+step+".src") uses eval and you should avoid it. I am not sure what is accomplished here by wrapping your string concatenation with an eval. I would store the Images in an array and access this by index instead.
Rather than have a setTimeout within the function to recur, consider using setInterval outside of the function.
As requested.
This is what my-slides.js should contain.
var numImages = 3;
var images = [];
for (var i = 0; i < numImages; ++i) {
var image = new Image();
image.src = 'images/' + (i + 1) + '.jpg';
images.push(image);
}
var step = 0;
function slideit() {
if (! document.images) {
return;
}
document.images.slide.src = images[step].src;
step = (step + 1) % numImages;
}
setInterval(slideit, 2500);
All you have to do is include your JS file either at your footer or header :
<script src="js.js"></script>
and then in that JS file wil contain :
var image1=new Image()
image1.src="images/1.jpg"
var image2=new Image()
image2.src="images/4.jpg"
var image3=new Image()
image3.src="images/3.jpg"
//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("image"+step+".src")
if (step<3)
step++
else
step=1
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
slideit()
the only thing you need to change is the path for the images themselves, they can be either relative to the JS file or absolute.

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