Save Xmlhttprequest - Small Gadget Which Downloads A Series Of Images From Web - Displays Images In A Loop

May 25, 2010

I am working on a small gadget which downloads a series of images from the web and displays the images in a loop. However i am having trouble saving the xmlhttprequest to a file to use later in an array. I have read that it should be easy to save the .png using Scripting.filesystemobject but have been unable to find any information on how to do it.

Here is my code so far:

Code:

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Ive just launch my website-portfolio, well its not yet the final version but it is almost and despite I am satisfied with the final result Ive detected a really strange bug that only happens sometimes. The thing is when the first introduction Slide appears (the one with the hand-made drawings), sometimes the images shrink from the normal size to small tiny images. This doesnt happen always and if you refresh the page it disappears.

Follow the link to the page were the bug happens - [url]. I'm using jquery cycle plugin, check it out.

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I can retrieve the set of filespecs in php with no problem. And I've got the setup in php to display the file, one at a time.

I"ve figured out how to open a full-screen window in javascript.

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1. I'd LIKE to automatically set the resolution on the system to 1024x768. I've been told html and javascript can't do that, so it'll have to be done by the user.

2. I figured out how to open a full-screen window in javascript.

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Here is the HTML for the area that holds the images

And here is the external .js file for it

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I want something like that :

<div class="ContainerThatAlignMyIcons">
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<img src="img2.jpg" width="10" height="10" alt="img2" />

[Code]....

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[Code]...

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[Code]...

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I have a listings page which displays results using images and text which are stored in a MySQL database, all is working fine. The images are pulled into the page from the database and each listing can have up to a maximum of 10 images. Some will have all 10, some probably one or two, so the page is coded such that if there's an image in the field, it displays a thumbnail, if there isn't then it shoves a " " in instead.

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The main photo sits in a div whose id is "mainphoto" the remainder all sit in a div whose id is "thumbpix".

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The following works for documents such as MS Word, but not for images (jpg, etc):
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Dec 20, 2009

I have recently worked on a flash based learning course and built functionality where users throughout the course can type in their own notes based on the course, and they can revisit these everytime they launch the course, the functionality is simply using flash cookies to store the notes on the users machine. I wanted to build functionality so that they could then save these notes to their hard disk and e-mail them on. To do this I call a javascript function from flash which opens a new webpage, passes through the notes from flash and uses document.write to write the notes to the new webpage. Then the user Saves (as web page html only) to save a copy to their machine.

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I think to preload an image I should us something like:

img = new Image();
img.src = 'images/img.jpg'

Could someone tell me how to create a loop which would preload a list
of images? Something like:

ImagesFolder = '...'
ImagesNames = '...'

For i = 0 to ImagesNames.Count
img = new Image();
img.src = imagesFolder + imagesNames(i)
End

Is this a good approach? Could someone tell me the javascript code for this?

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Apr 17, 2007

Let's say I have a Javascript function that loops over and over. In
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if(var==0){
var myHTML = "<input type='button' style='background-image:
url(grnbutt.jpg);etc. etc.'>";
var outq = document.getElementById("qbutt");
outq.innerHTML = myHTML;
}
else{
var myHTML = "<input type='button' style='background-image:
url(grnbuttdark.jpg);etc. etc.'>";
var outq = document.getElementById("qbutt");
outq.innerHTML = myHTML;
}

This works great using Firefox, and works with Internet Explorer also
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if(var==0){
var elem = document.getElementById("grn");
elem.style.backgroundPosition = "-100px 0";
}
else{
var elem = document.getElementById("grn");
elem.style.backgroundPosition = "center";
}

This also works, but also, constantly downloads new images when using
IE with the above setting. Microsoft calls this a "feature". They then
offer a fix for this "feature" that... doesn't work. Preloading
doesn't work. Loading the 2 images in a <divset to invisible doesn't
work. I've tried suggestions of creating php files that tell the
browser that the images don't expire for years. That didn't work for
me. Many people have also suggested that there is no way around it...
it can't be fixed until Microsoft fixes it.

So, is there any javascript way to loop 2 images on a button, without
Internet Explorer constantly downloading those 2 images over and over,
when its set to "Check for newer versions of stored pages: Every visit
to the page"?

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i am making a gallery and i was advised by philip m to preload my images before hand, so that the gallery runs smooth. i have done so but in a different way to what ive seen on some of the other posts on this forum and i was just wondering if this was practical javascript or am i over doing it.bascially, the images are external hrefs loaded into place holders.the external hrefs are stored as strings in an array.

so the loop runs for however many image hrefs are in the array.so the first iteration of the loop, an image is created and is given the href of whateever value the loop is of the array.then for each iteration of the loop, the var img, is overwritten with the next href in the array.so technically, iam not creating as many images as there are in the array, i am just creating 1 then overwriting it, but still loading the image data in to the browser cache.

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var mySpheres=new Array("sphere.gif","sphere2.gif");
function changeSphere(){
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Originally, I had the function call back to itself using setTimeout after the loop had gone through all the divs and changed their opacities appropriately. This caused an out of memory error (though, strangely, if I had any alerts in the function it didn't give me the error).

So the version below has the code in a while loop to let it run for 20 seconds - this gives me the "a script...run slowly, do you want to continue the script?" message.

So I have several questions:

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2) Is there a better way to code this effect (final result will be six lights fading in and out for a minute or so).

3)I'm not an experienced programmer, so any bad practices, ways to streamline, no no's, etc. that you see, please point out.

I've only posted the script here - the page simple consists of three divs (id's grad0, grad1, grad2) and a call to the function copied here.

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Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

[code]....

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Quote:

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[Code]....

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[Code]....

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