I am using unveil.js to load a site more quickly.
I have a white div that blocks the content, which I want to disappear after the first images have loaded.
I though I could just count the images, but I realize that some of the latter ones could just load first (which normally happens because there is a threshold parameter which loads the ones that follow on the scroll).
Could someone help me with a smart way to do this?
Here's my code and the crappy solution:
$("img").unveil(2000, function() {
$(this).load(function(){
if(imageCount >= 4){
$(".white-cover").fadeOut("slow");
imageCount = 0;
}
Since unveil changes the src attribute, you can use jQuery to listen to an attribute change which indicate that an image has been replaced.
$(document).ready(function(){
$("#selected-date-range").change(function(){
alert( $("#selected-date-range").attr("value") );
});
});
In case I understand your problem correctly, I would use:
$(document).ready(function(){
// all images are loaded
}
Does this help you?
Related
I want to upload 2 scaled images and I do not want to upload the original image. To do this, I set sendOriginal to false. If I set hideScaled to true, no files show in the uploader. If set set hideScaled to false, both scaled images show up in the list. I realize that the documentation says not to use both options this way. Is there another way to achieve what I want? How do I make fineuploader show only 1 file on the file list no matter how many scaled images it has?
I ran into this exact same problem. I also wanted to rename the larger scale to match the original filename and to pass a custom parameter so the server script could sort the images into the db based on scale size.
I used this method as a hackish substitute for an onScaled event. If anyone is still interested.
// Must be onSubmitted, not onSubmit or the DOM element won't be rendered yet.
onSubmitted : function(id, name) {
// scaling.sizes.name = 'thumb'
if (name.toLowerCase().lastIndexOf(' (thumb).jpg') !== -1) {
// Hide the element displaying the thumbnail.
qq(this.getItemByFileId(id)).hide();
// Good place to include any custom parameters based on scale size.
this.setParams({gpsize : 'thumb'}, id);
}
// scaling.sizes.name = 'large'
else if (name.toLowerCase().lastIndexOf(' (large).jpg') !== -1) {
this.setParams({gpsize : 'large'}, id);
// If needed rename file in this event, not before, since filename
// is the hackish hook needed to connect scale size to file id.
var newName = name.slice(0, name.toLowerCase().lastIndexOf(' (large).jpg')) + '.jpg';
this.setName(id, newName);
}
return true;
}
It's not perfect, but it gets the job done without bushwhacking through the script files.
I have the following jQuery to load status to a profile page using a ul with li status items.
The each() takes items from a JSON callback and the load() is supposed to ensure that the image is available before the li is created:
(showpic() gives me a well-formed url to use.)
function showStatus(data){
var jsondata = $.parseJSON(data);
var testText = "";
$('#doNews').empty();
$('#doNews').append($('<ul/>', {"class": "newsList", id: "theNews"}));
$.each(jsondata, function(i, item){
$('<img src="' + showpic(item[3]) + '" class="newsImage">')
.load(function(){
$(this)
.appendTo($('#theNews'))
.wrap($('<li>', {"class": "newsItem"}))
.closest('li')
.append(item[5])
});
});
$("#statustext").val('');
}
the problem is that the status feed now seems to be written to the page in the order the images load. i.e., instead of being written according to the JSON item order, the li s are written in the order of loaded images (this has the effect of grouping status by user, not writing it out by date, as in the JSON).
So...
how would I both write items in the JSON order and still wait for the img to load?
By the way, I looked at this qn:
jQuery each() and load() ordering
and it seems to be on the right track, but when I tried using hide() and then show()inside the load() function, it never seemed to be called, and the img remained hidden. Please give me a simple example if this is the solution you suggest.
Thanks!
Either:
1) Maintain a counter & timeout, count the # of images to load at start, create the items as "hidden", countdown the number of unloaded as they load, then (when counter hits 0 or timer times out) display everything;
or:
2) Create the items as hidden, and show them in the 'load' event. Items will appear in arbitrary order, but will end up being correctly ordered.
Here's a possible example: your code isn't very clear as to what structure is being built & where appended, so this is just a rough (but clearly coded) outline.
Try using intermediate variables more, rather than vast fabulous jQuery constructions, in your own. It will help you debug it.
console.log('loading news items');
$.each( jsondata, function(i, item){
console.log(' item', showpic(item[3]), item[5]);
var img = $('<img src="' + showpic(item[3]) + '" class="newsImage" >');
var element = img.wrap($('<li>', {"class": "newsItem", "style": "display:none;"}))
.closest('li')
.append(item[5]);
element.appendTo( $('#theNews'));
// when the IMG loads, find it's surrounding LI.. and show it.
img.load( function(){
console.log(' loaded', $(this).attr('src'));
$(this).closest('li').show();
});
// put a timer & show it anyway after 8s, if img still hasn't loaded.
element.delay( 8000).show(0);
});
You will also notice logging in the code. Logging is good software practice. Console.log is not available on IE, so you should eventually shim it or use a small library function of your own.
Fundamentally, you have to get away from adding to the DOM inside the 'load' event. That's what's causing the mis-ordering. Add to the DOM in the jsondata each() function, or in a separate well-structured bit of code that guarantees correct ordering.
I am using smoothdivscroll plugins. I want to start scrolling at different position f text when page is reloaded or refreshed. How can I do this?
Thanks.
You would have to write some code yourself for this special function. SmoothDivScroll has an option, startAtElementId, that you can use to tell the scroller to start at the position of a certain element (id). If you are loading the content of the scroller dynamically on the server side (using PHP, ASP.NET or something similar) you could make the server side code pick one of the content elements and add a certain id to it. Then you would set the option like this:
<script type="text/javascript">
$(document).ready(function() {
$("#makeMeScrollable").smoothDivScroll({
startAtElementId: "yourID"
});
});
</script>
You could also use the method jumpToElement. First you would initialize the plugin. Then directly after you would make a call to jumpToElement and tell it to jump to an element with a random number between 1 and the total number of elements you have loaded. This is not tested in any way, but I think it would look something like this:
<script type="text/javascript">
$(document).ready(function() {
// Initialize the plugin
$("#makeMeScrollable").smoothDivScroll();
// Randomize an element
var numberOfElements = $("#scrollableArea *").length;
var randomNumber = Math.floor(Math.random() * numberOfElements + 1 );
$("#makeMeScrollable").smoothDivScroll("jumpToElement", "number", randomNumber);
});
</script>
As I said, the above code has not been tested, but something along those lines should work.
Good luck!
I'm using jqGrid with cell editing. I have setup the colModel properties using the editrules option. Everything works fine in that if I edit a cell and try to save an invalid value the grid displays an error dialog, but I need to know how to position the error message dialog that comes up because in the case of my layout it ends up behind a video. I'm not quite sure how to hook into this and there don't seem to be any obvious options on how to do it.
In this case the dialog I would be trying to manipulate is the one with ID of info_dialog.
Also I'm using the clientArray option for cellsubmit.
I realize this is rather old but upon searching I didn't find any indication this might have been added since, so I figured now that I've figured it out I'd let everyone know how I solved the positioning of mine.
$(document).ready(function ()
{
$.jgrid.jqModal = $.extend($.jgrid.jqModal || {}, {
beforeOpen: centerInfoDialog
});
});
function centerInfoDialog()
{
var $infoDlg = $("#info_dialog");
var $parentDiv = $infoDlg.parent();
var dlgWidth = $infoDlg.width();
var parentWidth = $parentDiv.width();
$infoDlg[0].style.left = Math.round((parentWidth - dlgWidth) / 2) + "px";
}
From what I could find in the jqGrid source code, you can add a beforeOpen and an afterOpen. In my case I'd rather position the thing before it's displayed (duh!). Would be nice if there was a parameter to hook it up in the grid declaration, but this does the trick in the mean time.
I hope this helps someone! I spent most of my afternoon on this!
Default value of zIndex parameter of info_dialog is 1000. The function info_dialog from grid.common.js part of jqGrid will be called from grid.celledit.js without usage a 4-th parameter which can change the option.
So the best pragmatical way which I could recomend you is to decrease zIndex value of your div with the video so that it will be less then 1000.
I was wondering if anyone has found a solution or example to actually populating the input box of a slider and having it slide to the appropriate position onBlur() .. Currently, as we all know, it just updates this value with the position you are at. So in some regards, I am trying to reverse the functionality of this amazing slider.
One link I found: http://www.webdeveloper.com/forum/archive/index.php/t-177578.html is a bit outdated, but looks like they made an attempt. However, the links to the results do not exist. I am hoping that there may be a solution out there.
I know Filament has re-engineered the slider to handle select (drop down) values, and it works flawlessly.. So the goal would be to do the same, but with an input text box.
Will this do what you want?
$("#slider-text-box").blur(function() {
$("#slider").slider('option', 'value', parseInt($(this).val()));
});
Each option on the slider has a setter as well as a getter, so you can set the value with that, as in the example above. From the documentation:
//getter
var value = $('.selector').slider('option', 'value');
//setter
$('.selector').slider('option', 'value', 37);
UPDATE:
For dual sliders you'll need to use:
$("#amount").blur(function () {
$("#slider-range").slider("values", 0, parseInt($(this).val()));
});
$("#amount2").blur(function () {
$("#slider-range").slider("values", 1, parseInt($(this).val()));
});
You'll need to use Math.min/max to make sure that one value doesn't pass the other, as the setter doesn't seem to prevent this.
You were almost there when you were using the $("#slider-range").slider("values", 0) to get each value. A lot of jQuery has that kind of get/set convention in which the extra parameter is used to set the value.
I've done some work around the jQuery UI slider to make it accept values from a textbox, it may not be exactly what you were after but could help:
http://chowamigo.blogspot.com/2009/10/jquery-ui-slider-that-uses-text-box-for.html
$slider = $("#slider");
$("#amountMin").blur(function () {
$slider.slider("values", 0,Math.min($slider.slider("values", 1),parseInt($(this).val()) ) );
$(this).val(Math.min($slider.slider("values", 1),parseInt($(this).val())));
});
$("#amountMax").blur(function () {
$slider.slider("values",1,Math.max($slider.slider("values", 0),parseInt($(this).val()) ) );
$(this).val(Math.max($slider.slider("values", 0),parseInt($(this).val())));
});
I just used martin's code and updated the id to #slider also added the math.max as he suggested so the sliders won't overlap.