Ive written an image preloading script but Im not sure if it would work. Could someone look at it and just clear up wether it should work or not
<html>
<head>
<script type="text/javascript">code].....
In one of my web page I want to show an image preloader. ie When I clicked on the small thumbnail in my web page then the main large image will load. My code looks something like this
$("#images li").click(function(){
var image=this.href;
$("#mainImage").attr('src',image);
});
I want to show the Loading sign until the main image loads completely.
I´m using the following code to preload the hover images of my navigation:
Code:
menu_0101 = new Image();
menu_0101.src = "images/menu_0101_h.gif";
My question: When I enter the page the second time will the images be taken from the browser´s cache or from the server?
I issue a css rule for my table that will contain the masthead thus:
table.banner{background-image:url(background.gif);background-repeat:no-repeat;}
Afterwhich i preloaded the background image using javascript thus:
<script>
banner=new Array();
banner[1]=new Image();
banner[1].src="background.gif";
</script>
when i tested this script i didn't notice that the background image got pre loaded pls am i doing anything wrong?
Is this a good way to do an image swap & preload for a navigation?
"Good" as in efficient, fast etc. Code:
The follwing function is in an onkeypress event for some textboxes. How can
I cancel the keystroke? or more importantly it's output. This function does
what I want it to do, but it actually writes a space in the textbox. I
wanted to escape out of writing the character. Especially if I change it to
another keyCode besides space bar. Any ideas?
function setEfforts(ctrl){
if(event.shiftKey && event.keyCode == 32)
{
var row = ctrl.parentNode.parentNode;
var inputs = row.getElementsByTagName('input');
var textboxes = new Array();
for(var x = 0; x < inputs.length; x++)
if(inputs[x].type == 'text'){textboxes.push(inputs[x]);}
for(var y = 0; y < textboxes.length; y++)
textboxes[y].value = ctrl.value;
}
return false;
}
I'm using an ajax-type script(as such things are now called) to use document.id.innerHTML() to write code dynamically into a <div>.
The code being written into the div is the html and javascript of another page that is being copied down by a php script and then being written into my <div> via the innerHTML(). The webpages being displayed in the div have javascript functions that have to run in order for that page to be displayed correclty.
Once I re-write the 3rd party webpage code into my div, the javascript from the loaded page doesn't run. The pages kept coming up looking incomplete, so I turned off javascript on my browser and loaded the page in question directly and got the same thing. So it confirmed that the <div> is not running the written javascript.
Is there a way around this, or do I need to look for another solution?
I would like to check a web page for updates that is written in JavaScript and requires me to log on with a username and password, then email me a snapshot of the web page or a copy of the web page.
Is there any software out there will let me do this?
Here is a simple script to simulate the page being coded as it loads.
Here is the script....
----------------------------------------
<script language="JavaScript">
var x = 2;
var y = 0;
var h = 0;
function LineBy()
{
bodyarray = document.body.innerHTML.split('
');
document.getElementById('mover').style.height = document.body.clientHeight - h;
var currentline = String(bodyarray[x]);
if (currentline.charAt(y) == "<") displayed = "<";
else if (currentline.charAt(y) == '"') displayed = """;
else (displayed = currentline.charAt(y))
document.getElementById('mover').innerHTML+=displayed;
document.getElementById('mover').style.top = parseInt(document.getElementById('mover').style.top) + 2;
if (y <= currentline.length) {y++;}
else {y=0;x++;document.getElementById('mover').innerHTML="";}
if (parseInt(document.getElementById('mover').style.top) >= (document.body.clientHeight-20)) {document.getElementById('mover').style.visibility="hidden";return;}
h = h + 2;
setTimeout('LineBy()',1);
}
</script>
----------------------------------
Place this inside the body tag.
----------------------------------
onload="LineBy()"
----------------------------------
Then include this DIV inside the body tag.
----------------------------------
<div id="mover" style="font-size:7pt; position:absolute;top:0; background-color:FFFFFF; visibile:hidden; width:100%;z-index:5;height:100%"></div>
i'm removing a bit of html once the page has loaded with js (a message for non-js people) but that makes the page jump sometimes so i want to remove it earlier, as the page is being written/output like how document.write works. i thought of this which seems to work ok:
Code:
<script type="text/javascript">document.write('x3C!--');</script>
<p>HTML element not to be seen by people with JS</p>
<script type="text/javascript">document.write('--x3E');</script>
it comments out the bit of html i want to remove for js viewers. is that the best way to do it? is there a bit less verbose one maybe?
I have a div with a class of .edit
Then once those show up i have
These don't work. however, if i just put them into the div with using the .append they work ?
how can i remove a script from a div using jquery
my div
<div ID="msg" runat="server">
<script type="text/javascript">showMessage('some message')</script>
</div>
i whant it to be empty (so at the next postback the function will not run)
Is innerHTML written with this combination of upper and lowercase letters, or is it written another way? I assume if I write it with the wrong combination in the code ajax won't work.
View 3 Replies View RelatedI'm creating a PHP script that will use the pagination to display what people have written. This will can get fairly lengthy and I was wondering what is the best way to develop my php script to be fast and effective. I'm scared that if I output an entire query of all of the data that it will be slow. Would it? Could it slow down the javascript?
View 2 Replies View RelatedI am looking for a free web based spreadsheet written in Javascript / Ajax.
is this can be found ..
I am trying to pass 2 hidden values from the selected option drop down option.
For example, here is the html for the drop-down:
<select name="description1"/>
<option value="">Select a category</option>
<option value="3563" >Disaster Relief Fund</option>
<option value="3564">New Turbine DC-3</option>
[Code]....
I need "description1" to be passed as the text (or hidden text) "Disaster Relief Fund" and I need a separate hidden text "item1" to be passed as "3563".
I have a JSON file with multiple containers that has built a webpage. I need to create a javascript from this file to render a page since it was written to use a js library (I think scriptaculous or doj). I want to use jQuery to do this -- at least that's what I'm told I can do. I understand that JSON is a data-exchange language like XML. Here's some code:
Code:
var nov_info= {
'categories':[
{N:'nwItem1',O:'Composition',V:School Supplies > Paper> Notebooks},
{N:'nwItem2,O:'Crayons',V:'Elementary > Art > Art Supplies'},
{N:'nwItem3',O:'Calculators',V:'High School > College Prep> Trigonometry'},
{N:'nwItem4',O:'Maps',V:'Middle School > US History > Civil War'}
],
[Code]....
I am inserting an image into a span tag by click on button and resize the image using resize_image_height_weight function.I am using two function to do this task. code...My purpose is to resize the image.
View 2 Replies View Relatedfunction writeCmd()
{
// var div = top.buttonFrame.document.getElementById("buttonList");
[code].....
I am using this Rich Text Editor in my asp.net page.Every thing is fine , but i want to get the html contents inserted by user using a javaScript function and submit the form asynchronously. But i am unable to get the html content. how to get the html contents.I am herewith attaching that Rich Text Editor file .You please unzip these files and place those in a single folder, i have kept in separate folders since single file size was getting larger that limit.
View 6 Replies View RelatedI'm finding IE9 handles the preloading of images using the Image object differently to its earlier versions.For example:
This code in the <head>
Code:
<script type="text/javascript">
var picData = ['num1.jpg','num2.jpg','num2.jpg','num2.jpg'];
picO = new Array();
[code]....
Earlier versions of IE seem to work as FF4 does.It appears that the window.onload event in IE9 does not take into account if all the images have completed downloading via the above FOR loop whereas FF4 and the others do.
The workaround I am using is to preload the images in hidden <img>'s at the top of the <body> and then loading them into an Image object to get the jpg's actual width and height. This is working in IE9, FF4 and the other majors.
You know how most Web pages load elements one-at-a-time? Well, I'd like to have my page appear all-at-once (all graphics, text, etc.).
View 3 Replies View RelatedI'm using ie 5 and I was preloading these images for a rollover and I noticed the preloading wasn't working.
I looked at my code from all angles and couldn't figure it out - checked online examples on how to do it - same way I'm doing it.
Checked a different browser - worked fine.
So is there a security setting in IE that may disable preloading stuff? Or idoes my browser just need to be reinstalled?
Is it possible to preload .js files the same way as pics (or any other way) ? The reason i ask is I have grabbed some nifty navigation code, but takes a little time to load first time.
View 1 Replies View RelatedI'm finding IE9 handles the preloading of images differently to IE8 and FF4 and the latest versions of other browsers.
In IE9 the preloading still works ok unless I want to use the width or height properties of the created Image object before the src of the new Image has been assigned to an <img>
For example:
This code in the <head>
Code:
outputs '0 0' in IE9 and '150 250' in FF4 and the latest versions of the major browsers. 150 and 250 are the actual width and height of mypic1.jpg
Earlier versions of IE seem to work as FF4 does.
It appears that the window.onload event in IE9 does not take into account if all the images have completed downloading via the above FOR loop whereas FF4 and the others do.
The workaround I am using is to preload the images in hidden <img>'s at the top of the <body> and then loading them into an Image object to get the jpg's actual width and height. This is working in IE9, FF4 and the other majors.
Have I missed or misunderstood something in the the way IE9 works?
I am attempting to preload an array of images on my website so that they preload in order and only preload one at a time (the images are large and I want them to load in the order they will be viewed in.)So far I have this:
Code:
var images = new Array();
images[0]="website/users/user1/images/0001_000_808460.jpg"
images[1]="website/users/user1/images/0001_001_800872.jpg"
[code]....
This preloads the images all at once. I have yet to figure out a way so that "images[0]" loads first and completely before "images[1]" (and so on).