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JavaScript - Qatrix - A New High Performance Javascript Library Is Now Released.
Qatrix is a new kind of JavaScript library for easily building up high performance web application with less code. And now is released today.
The features of Qatrix a Hardware Accelerated Animation Qatrix will use the native CSS3 transition to process the animation as possible. And this kind of native basic process operation will enable hardware acceleration by browser. The animation of Qatrix will be more faster and more smoother. High performance code Qatrix is using more native code and special design to increase the performance. Web application will run much more faster and more efficient. Easy-to-learn The name of functions on Qatrix is familiar with the most popular JavaScript jQuery. It will be much more easy to use without re-learn other new concept and knowledge. Cache system Qatrix included a simple cache system to storage and fetch data with high speed. Incredible size Only 6KB compressed and gzipped file size with 60+ functions. Load script instantly without expectation. Read more and download: http://qatrix.com Similar TutorialsHi, Which among the following for iterating objects in JavaScript is better in terms of performance & usage? A) property enumeration: for (var propName in someObject) { var value = someObject[propName]; } B) Array protocol for (var i=0; i<someObject.length; i++) { var value = someObject[i]; } C) forEach method Can forEach method be used across various browsers and OS? K Hello. I have a page that has bunch of moving elements, and obviously I want the movement to be smooth. It worked just great in chrome, but very chunky in firefox. I ran a profiler, found the bottleneck and dealt with it, so things work fine now, but after seeing the result of profiler I now have few questions: The function that is responsible for moving elements around takes 33% of time. Here's the code: Code: Tile.prototype.relocate=function(x,y){
this.elem.style.left=this.x=x;
this.elem.style.top=this.y=y;
}
It's called from timer (setInterval) for elements that are not where they should be (they have .style.position set to "relative"). Is there a better way of moving elements around? Another function: Code: function type(code){
return code>>8;
}
It takes 13% of time. Now this is just ridiculous. 181854 binary shifts take 174.579ms. Is there a way to make it look like a function call but just replace the call with actual code at compile time, just like C's preprocessor? I have a nice javascript slideshow but it kills the rendering speed of my home page. According to Yahoo performance guru(s), javascript gets run before other stuff is rendered, so you fix that by putting the js code "at the end" of the html file. Putting it at the end puts the slideshow at the bottom which is not the desired result. And even abs positioning is slave to the <div> structure. How do I nullify the flow just for this one thing (I don't want to make the whole page absolute). Or is there a better way to fix the performance issue. Thanks. Hi im in the middle of creating my own javascript library but got stuck I can do everything for this library I just got stuck on how to make it flow through a list of strings like jQuery does. For example jQuery allows you to write a string like this: $('li').add('p').css('background-color', 'red'); Which they can select all li tags add a p tag inside then change the background color of that tag, What im asking is how can I go about doing this where I can create a similar system which allows me to flow through my class functions. Right now its a very small code because I started again to allow better overview of where things are but this is it so far. This allows the use of both SDK and $ at the start of the function for example. $.Display({'file':'index.php','id':'divid'}); And SDK.Display({'file':'index.php','id':'divid'}); Code: (function(window)
{
var $ = {
Display: function(info)
{
this.call(info.file,info.id,'file='+info.file);
},
call: function(file,id,parameters)
{
if (window.XMLHttpRequest)
{
xmlhttp=new XMLHttpRequest();
}
else
{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById(id).innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("POST",file,true)
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded")
xmlhttp.send(parameters)
},
Flash: function(params)
{
if(params.file){alert(params.file);}
if(params.id){alert(params.id);}
}
};
// Expose SDK to the global object
window.SDK = window.$ = $;
})(window);
Hey guys! Was wondering if anyone knew a simpel javascript library? With things like alert ,displayDate() and other basic things. Im pretty new to JS so I think that a lib like jquery would be to hard for me right now. Thx // Kiwo Hello, UPJS is an open source JavaScript Library that caters needs and requirements of web developers. It is currently under development, we encourage you to use this Library. For any bug, we will be glad to help you. Please follow upjs on facebook, http://www.facebook.com/pages/upjs/239536299419136 http://www.upjs.org Have a nice day! I read the posting guidelines but I still have questions that I would love to be answered by anyone willing to tolerate me. I started studying javascript when I decided that I wanted to create a dynamic webpage after viewing some books that were made to pageflip with Javascript and after viewing a ton of animations. So I figured since everyone keeps saying Javascript is simple that if all I wanted to do was to make a book extend outwards on mouseover and then open up on click and flip pages which they already have a code for that it wouldn't be so difficult. I've read everything I could practiced a little bit, I'm not fluent but I do have a goal and a time. The problem for me comes up with figuring out what I need to do in order to make it appear as if the book is coming out of a book shelf. There is a lot of information on animations where flat objects rise above clouds. I am thinking that I would have to use some sort of sprite of a row of books both sorta sideways where you can see the side of the book as well as the edge, and both a row of books on a shelf, or perhaps a row of books with some of the books being pulled out and then on mouse over animate the scene so that it looks like the book is being pulled out. Would that work? Or is there a simpler way? Another way or I don't know. Is there a code that can make it look like a book is extending outwards without an animation or would I need to create an animation for that? Thank you. Hi all, can anyone recommend me nice tooltip script which is javascript library independent, meaning no help/code from any of libraries such as (jquery, prototype,scriptalicious, mootools,extjs etc.). Here is the one I particularly like but it uses protoype and that is not option for me now, because I'm just integrating something else into already existing huge script and I don't wanna mess up old functionality or bring some additional unnecessary overhead. Or even better if you can give me some guidelines / pointers , how to make one from scratch that would be acceptable for me also. The most important thing is that it points from above downwards, because I found like dozen of good ones but pointing from below. Here is an example what I mean when I say from pointing from above. Thank you I am trying to use a javascript plugin for jQuery library that transforms a regular select html element into a dropdown checkbox list (Dropdown Check List, see http://code.google.com/p/dropdown-check-list/), however I believe that the prototype library that I am loading immediately after the jquery library is still conflicting with it somehow even though I modified my code to reflect the following changes (which is supposed to allow the use of prototype with jquery): http://docs.jquery.com/Using_jQuery_...ther_Libraries (Including jQuery before Other Libraries) My code (in a cold fusion environment, which should be irrelevant) looks like this: Code:
<html>
<head>
<SCRIPT LANGUAGE="JavaScript" SRC="js/jQuery/jquery.js" TYPE="text/javascript"></SCRIPT>
<SCRIPT LANGUAGE="JavaScript" SRC="js/prototype.js" TYPE="text/javascript"></SCRIPT>
<script language="javascript" type="text/javascript" src="js/jQuery/ui.core.js"></script>
<script language="javascript" type="text/javascript" src="js/jQuery/ui.dropdownchecklist.js"></script>
<script language="javascript" type="text/javascript">
jQuery(document).ready(function() {
jQuery("#cbo_status").dropdownchecklist({ width: 200, maxDropHeight: 120 });
});
</script>
</head>
<body>
<select id="cbo_status" name="cbo_status" multiple="multiple">
<option value="-1">All</option>
<option value="1" SELECTED>Assigned</option>
<option value="2" SELECTED>In Progress</option>
<option value="3" SELECTED>Complete</option>
<option value="4" SELECTED>Verified Resolved</option>
<option value="5" SELECTED>Will not be addressed</option>
<option value="6" SELECTED>Wishlist</option>
</select>
</body>
</html>
When I run the debugger, here's the error I'm still receiving: Error: Object doesn't support this property or method (pointing to the line below, character 3) jQuery("#cbo_status").dropdownchecklist({ width: 200, maxDropHeight: 120 }); Does anyone have any idea why this might still be failing? I want to build functionality like that (see http://www.cymaxstores.com/Common/Pr....aspx?ID=26094) is it possible with only javascript , or ??? I dont have any clue plz help any help would be appreciated Thanks sknaht Have problem with IE8. Before IE 8, I can disable a drop-down box, but the selected item still there highlighted. But IE 8 makes the highlight go away. Is there any way to keep the original, Disable a item, you still keep the lightlights Thanksl
Hi, I ve recently come across the Advanced jQuery background image slideshow by Marco Folio. I have implemented it fine but when it goes to load an image I get a black screen for a second or two. I have about 15 images and reading around I found out that it has to do with the loading of images and that it would be better adding an image preloader to it. I have tried several pre loaders and have got the to work on their own, but not with this slider. This is the script.js Code: var slideshowSpeed = 6000;
// Variable to store the images we need to set as background
// which also includes some text and url's.
var photos = [
{
"title" : "",
"image" : "1.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}, {
"title" : "",
"image" : "2.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}, {
"title" : "",
"image" : "3.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}, {
"title" : "",
"image" : "4.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}, {
"title" : "",
"image" : "5.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
},{
"title" : "",
"image" : "6.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}, {
"title" : "",
"image" : "7.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}, {
"title" : "",
"image" : "8.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}, {
"title" : "",
"image" : "9.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}, {
"title" : "",
"image" : "10.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
},
{
"title" : "",
"image" : "11.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
},
{
"title" : "",
"image" : "12.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
},
{
"title" : "",
"image" : "13.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
},
{
"title" : "",
"image" : "14.jpg",
"url" : "#",
"firstline" : "",
"secondline" : ""
}
];
$(document).ready(function() {
// Backwards navigation
$("#back").click(function() {
stopAnimation();
navigate("back");
});
// Forward navigation
$("#next").click(function() {
stopAnimation();
navigate("next");
});
var interval;
$("#control").toggle(function(){
stopAnimation();
}, function() {
// Change the background image to "pause"
$(this).css({ "background-image" : "url(images/btn_pause.png)" });
// Show the next image
navigate("next");
// Start playing the animation
interval = setInterval(function() {
navigate("next");
}, slideshowSpeed);
});
var activeContainer = 1;
var currentImg = 0;
var animating = false;
var navigate = function(direction) {
// Check if no animation is running. If it is, prevent the action
if(animating) {
return;
}
// Check which current image we need to show
if(direction == "next") {
currentImg++;
if(currentImg == photos.length + 1) {
currentImg = 1;
}
} else {
currentImg--;
if(currentImg == 0) {
currentImg = photos.length;
}
}
// Check which container we need to use
var currentContainer = activeContainer;
if(activeContainer == 1) {
activeContainer = 2;
} else {
activeContainer = 1;
}
showImage(photos[currentImg - 1], currentContainer, activeContainer);
};
var currentZindex = -400;
var showImage = function(photoObject, currentContainer, activeContainer) {
animating = true;
// Make sure the new container is always on the background
currentZindex--;
// Set the background image of the new active container
$("#headerimg" + activeContainer).css({
"background-image" : "url(images/" + photoObject.image + ")",
"display" : "block",
"z-index" : currentZindex
});
// Hide the header text
$("#headertxt").css({"display" : "none"});
// Set the new header text
$("#firstline").html(photoObject.firstline);
$("#secondline")
.attr("href", photoObject.url)
.html(photoObject.secondline);
$("#pictureduri")
.attr("href", photoObject.url)
.html(photoObject.title);
// Fade out the current container
// and display the header text when animation is complete
$("#headerimg" + currentContainer).fadeOut(function() {
setTimeout(function() {
$("#headertxt").css({"display" : "block"});
animating = false;
}, 500);
});
};
var stopAnimation = function() {
// Change the background image to "play"
$("#control").css({ "background-image" : "url(images/btn_play.png)" });
// Clear the interval
clearInterval(interval);
};
// We should statically set the first image
navigate("next");
// Start playing the animation
interval = setInterval(function() {
navigate("next");
}, slideshowSpeed);
});
and this is the part of the html where it is added: Code: <div id="header_top"> <div id="headerimgs"> <div id="headerimg1" class="headerimg"></div> <div id="headerimg2" class="headerimg"></div> </div> </div> I would like to load 2 images on page load and then while it is displaying the 2 images to download to the browser cache the rest. Could you point me in the right direction. Thanks I am developing a web page which contains a java script file. Java script file is created using excel tool. My problem is that the execution time of a java script function is very high,mainly in chrome browser. what will be solution to overcome this?
Hello everyone! Im new here so any help you can give would be great. I am a Designer, and some time AS3 programer. Teaching my self Javascript for a portfolio website. The Goal: I created a code that randomly creates and Populates Divs in a regular grid, then populates them with an image (using css backgroundImage property) or a print CMY(and Green) color. (eventually will include a shadow box and side scroller) The Problem: The creation and population works just fine, the first time around. if I "Refresh" the page (which i thought destroyed all vars and data) the page loads some times, or freezes. Some times it doesn't load at all! so its very unpredictable, obviously i need this to work the same way every time. Im pretty sure its something simple that i missed, a nuance of javascript or something. So if any one who is more experienced can help I would be super grateful!! here is the page on my website: designchangeseverything.com/beta/divpoptest.html here is the code (i included some of my comments so you can see how i was trying to debug): Code:
<SCRIPT LANGUAGE="JavaScript">
var Tborder = .05
var howmanyIMG = 15
var winHeight = Math.floor(window.innerHeight);
var winWidth = Math.floor(window.innerWidth);
var BoxHeight = Math.floor((winHeight * (1-Tborder)) / 3);
var BoxWidth = BoxHeight;
var howmanyx = Math.floor(winWidth / BoxWidth) + 1;
var howmanyy = 3;
var HowMany = howmanyx * howmanyy;
var used = new Array(howmanyIMG);
var CMYG = ["00AEEF","EC008C","FFF200","41AD49"]
function RNDy(numby){
return Math.floor(Math.random()*numby);
}
function getUniq(){
/* alert("run getuniq");*/
var n;
while ( used[ n = RNDy(howmanyIMG) ] ){}
used[ n ] = true;
return n;
}
function ColorRND() {
if (RNDy(4) ==1) {
return true;
}else{
return false;
}
}
function PlacePop (HMx,HMy){
var counter = 0;
var countc = 0;
for(x=0;x<=HMx;x++){
var countr = 0;
for(y=0;y<HMy;y++){
var divy = document.createElement("div");
var divyID = 'box' + counter;
divy.setAttribute('id', divyID)
divy.style.position="absolute";
divy.style.zIndex = counter + 3;
divy.style.visibility = 'visible';
divy.style.borderWidth = '1';
divy.style.borderColor = '#000000';
divy.style.pixelLeft= x * BoxWidth + (2 * countc);
divy.style.pixelTop= y * BoxHeight + (winHeight * Tborder) + (2 * countr);
divy.style.pixelWidth= BoxWidth;
divy.style.pixelHeight= BoxHeight;
if (ColorRND()){
/*divy.innerHTML = 'color';*/
divy.style.backgroundColor = "#" + CMYG[RNDy(4)];
}else{
/*divy.innerHTML = 'image';*/
divy.style.backgroundImage = "url(resourses/images/portfolio/" + getUniq() + ".png)";
divy.style.backgroundPosition = "center";
/*RNDy(100) + "% " + RNDy(100) + "%";*/
}
document.body.appendChild(divy);
counter++;
countr++;
}countc++;
}
/*
alert("ran" + counter + " times");*/
}
/* used = null;*/
</script>
THANKS FOR ANY HELP YOU CAN GIVE! Hello. I have a few String prototypes such as Code: String.prototype.EscapeReg = function () { return this.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&"); };
// Escapes characters for use with a regular expression
I also have my own class/ library which is used like this Code: var adg = new AndyG_ns.ADG_Utils();
adg.StartClock('AndyClock','dd mmm yy hh:nn'); // etc.
What I would like to do is to only add the prototype to my library (not to the global namespace). The end result I'm looking for is to use code such as: Code: var adg = new AndyG_ns.ADG_Utils(); var myString = new adg.AString(); var parsed = myString.EscapeReg(); In addition, I want to be able to also use/create my special string sub-class within my library. I suppose I'm saying that I would like to extend or super-class the native String object. Any guidance would be appreciated hello .. can I use som function from c++ library in my java script file ? thanks .. Greetings, I am using the javascript scriptaculous library. On my Green Products webpage, if the user clicks "Subcategory", "Maximum Price", "Business Name", or "Search For", a green dialogue box should appear giving the user a tooltip. This works great for browsers other than IE. I am getting the following error: Quote: Message: Object doesn't support this property or method Line: 543 Char: 3 Code: 0 URI: http://www.green-watch.org/scriptaculous/src/effects.js Message: Object doesn't support this property or method Line: 529 Char: 3 Code: 0 URI: http://www.green-watch.org/scriptaculous/src/effects.js This is a fairly common library. What is the solution to this problem? Always seems to be problems with IE... Thanks in advance for any solutions or suggestions. Sincerely, Travis Walters [delete]
First off I'm incredibly new to JavaScript and its likely I am going about this completely the wrong way. But gotta start somewhere. Also my apologise if I am posting in the wrong area. Here's my problem. I have setup a site in CSS3/XHTML that I will use to display some of my photography (im a keen photographer) The way my Gallery will work will be using Submenu's then there will be a table of Thumbnails which I have setup. The part I am stuck on is that I want people to be able to click the thumbnails and then the corresponding picture held in the next folder to be displayed in a CSS defined container in the center of the page. So clicking _Images/Thumbnails/1.gif will bring up _/Images/1.gif in the CSS container For the life of me I cannot work out how to do it though. Here is my code so far. HTML -> <td> <a onclick="newImage" href="nogoto"> <img src="_images/Thumbnails/1.png" align="left" width="47px" height="33px" alt="1" id="1"/> </a> </td> CSS -> #mainpage { color:#FFF; text-align:right; font-size:.7em; height:365px; width:529px; position:relative; top:25px; left:35px; } JavaScript -> window.onload = newImage(); function newImage() { document.getElementById(mainpage).innerHTML = "<script>background-image:_images/1.png;</script>" } Obviously I want to expand on this once it works but for now I would just like to get the images to appear correctly when clicked. Thank you so much in Advance if anyone can help. |
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