JQuery autoscroll to bottom (but disable on mousescrolling) - javascript

I load my content per $.get and "follow" the new appended data per javascript-auto-scrolling. Now I want to disable autoscrolling if the user "scrolls manually", but the following scroll-to-bottom function also triggers the Jquery .scroll()-function - so it disables itsef.
if(self.testelem.hasClass("active")){
$(document).scrollTop($(document).height());
}
How can I receive a mouse-wheel event or prevent scrollTop to trigger the .scroll()-function? I also tried to set a Timeout to block while scrollTop is working, but this isn't a great solution and has a few drawbacks.
Any suggestions?
EDIT :
My current code:
I use the button #stb (scroll to bottom) and the class .active to to turn it off/on.
$.get("url", function(data){
//do something
if(self.testelem.hasClass("active")){
$(document).scrollTop($(document).height());
}
});
$(document).scroll(function(){
jQuery('html,body').queue([]).stop(); //try this
//$("#stb").parent().removeClass("active");
});
ps: Yes, I know. There are a few quite similar questions. I read them, but they differ in important points.

To stop a scrollTo event on user-interruption mid-scroll try this:
$(document).scroll(function(){
jQuery('html,body').queue([]).stop(); //try this
//jQuery.scrollTo.window().queue([]).stop(); //failing that try this
});

Related

call back for javascript animation

I have a java script animation for scrolling unto to the top of a page smoothly.At the end of animation I have a .focus() function to focus on a form field. The focus is causing some jerkiness. Upon researching I found out I can fix by having a call back for animation and having the focus in that. I am not sure how to do that. Any help is much appreciated.
$(".scroll").click(function(event){
event.preventDefault();
//calculate destination place
var dest=0;
if($(this.hash).offset().top > $(document).height()-$(window).height()){
dest=$(document).height()-$(window).height();
}else{
dest=$(this.hash).offset().top;
}
//go to destination
$('html,body').animate({scrollTop:dest}, 1000,'swing');
$('input#Name_First').focus();
});
http://jsfiddle.net/1kbph7q3/
Both the comments on your question are correct.
Heres a working JS Fiddle: http://jsfiddle.net/got29e9v/1/
The first error was that the anchor link need the class of .scroll.
Also the JS fiddle wasn't using JQuery, your JavaScript was trying to use it.
I've added a callback function on the animate method. This is called when the animation completes.
Hope that helps.

NivoSlider - Disable Right Click

I have been asked to put in place disabling of the right clicks on a website, I've informed them there is so many ways that people can still download the images via Google Images, Cache, Firebug etc etc, but none the less my arguments have gone ignored and they insist this must be done.
Any, I've put in the footer some code that disables right clicking on all elements using <IMG src=""> this fails to work on NivoSlider, I did change the script to use window load on disabling the right click which works but after slide1 it stops working and I assume this is something to do with changes to the DOM.
JavaScript is by far my weakest point and I'm hoping that someone without to much trouble can either give me a full working solution or something to go on. Thanks in Advance.
They are using NivoSlider with the following trigger:
<script type="text/javascript">
(function($) {
$(window).load(function() {
$('#slider').nivoSlider();
});
})(jQuery);
</script>
And this is the code that I've placed in the footer that fails to work on slide2+
<script>
$(window).load(function() {
$('img').bind('contextmenu', function(e) {
return false;
});
});
</script>
You're absolutely right with the DOM changes. You need to delegate the event to a parent element.
Try something like this:
$('#slider').delegate('img', 'contextmenu', function(e) {
return false;
});
Or this if using jQuery > 1.7:
$('#slider').on('contextmenu', 'img', function(e) {
return false;
});
You might be able to do it by preventing the default behaviour of a right click on the image.
See this answer: How to distinguish between left and right mouse click with jQuery

How to execute jQuery function after Ajax page load

I'm building Wordpress website where all content pages are loaded using Ajax. This is causing me a problem with jQuery localScroll plugin. This plugin will add animated scroll to all anchor links on the page. Problem is that using script below I'm able to have animation on that page only after one of the links on the page is clicked.
I think I understand why is this happening. My guess is that after I click on the main menu script will execute but since Ajax content is not yet loaded events are not attached to Ajax loaded content links. Now I'm stuck, I have no clue how to fix this. Would you mind helping me with this one?
Thank you in advance.
$(function(){
$('a').live('click', function() {
$('#portfolioWrap').localScroll({// Only the links inside that jquery object will be affected
target: '#portfolioWrap', // The element that gets scrolled
axis:'y', // Horizontal scrolling
duration:1500
});
});
});
EDIT
Just a note to others after I managed to make this work. I tried all suggestions here. My guess is that solutions suggested by o.v. and Ohgodwhy should work, but probably due to website complexity and maybe plugin limitations I wasn't able to make them work. For example .on function didn't work at all although I'm using jQuery 1.7.1. At the end I implemente ajaxComplete suggested by Just_Mad and that worked. Thank you all for your help!
This is the code:
$(function() {
$('#wrapperIn').ajaxComplete(function() {
$('#portfolioWrap').localScroll({
target: '#portfolioWrap', // The element that gets scrolled
axis:'y', // Horizontal scrolling
duration:1500
});
});
});
If you use jQuery.ajax to load AJAX content you can try to bind to ajaxComplete event, to get the moment, when any ajax is complete.
Elaborating on what GoldenNewby said, listen/attach with the .on() method introduced in jQuery 1.7.
$(function(){
$('body').on('click', 'a', function() {
$('#portfolioWrap').localScroll({
target: '#portfolioWrap', // The element that gets scrolled
axis:'y', // Horizontal scrolling
duration:1500
});
});
});
No need to use AJAX for callbacks for listening/binding to elements. The above function will place a click function on all elements found within the body{1} at/after page load. This includes all dynamically created links.
{1} - Change 'body' to whatever Container has the ajax data. I.E. #portfolioWrap
Add a callback to the ajax load, good place to start is at http://api.jquery.com/jQuery.ajax/ under "success callback"
I would have given more specific advice, but your snippet is a bit isolated, maybe if you created a jsfiddle?

jquery popup message by cursor

After a bit of advice. I'm kind of after a tooltip type thing, but not exactly. I've got a site with a number of links all over the place. When these links are click they load an ajax form at the bottom of the page. Once loaded the page scrolls down to the form, which can be way off the bottom of the screen sometimes. All well and good.
When you click a link there is a slight delay, and when I would like to do is have a small "loading" message appear by wherever the cursor is, pinned to the cursor, then remove this once you scroll down to the loaded form.
Any ideas please?
I've answered this for you in the code of this fiddle. It includes the HTML and the javascript to show/hide the tooltip while your ajax call is executing.
Here is the jQuery portion to see how it works.
$("#ajaxLoader").click(function() {
$("#loading").show();
$.ajax({
settings etc.
success: function() {
$("#loading").hide();
}
});
});
$("HTML").mousemove(function(e) {
$("#loading").css({
"top" : e.pageY,
"left" : e.pageX + 15
});
});
at your .ajax() call you can add something in the beforeSend
the rest is in this post: How do you make a picture follow your mouse pointer with jquery?
Let's say u have a common class for all links which is loading-link.
$('.loading-link').click(function(){
$(this).before('<div class="loading">Loading</div>');
// Adjust the position here
// your ajax stuff
$.ajax() ....
....
success:function(){
$('.loading').remove();
// scroll to bottom
}
});

Prevent/stop auto anchor link from occurring

I need to prevent the automatic scroll-to behavior in the browser when using link.html#idX and <div id="idX"/>.
The problem I am trying to solve is where I'm trying to do a custom scroll-to functionality on page load by detecting the anchor in the url, but so far have not been able to prevent the automatic scrolling functionality (specifically in Firefox).
Any ideas? I have tried preventDefault() on the $(window).load() handler, which did not seem to work.
Let me reiterate this is for links that are not clicked within the page that scrolls; it is for links that scroll on page load. Think of clicking on a link from another website with an #anchor in the link. What prevents that autoscroll to the id?
Everyone understand I'm not looking for a workaround; I need to know if (and how) it's possible to prevent autoscrolling to #anchors on page load.
NOTE
This isn't really an answer to the question, just a simple race-condition-style kluge.
Use jQuery's scrollTo plugin to scroll back to the top of the page, then reanimate the scroll using something custom. If the browser/computer is quick enough, there's no "flash" on the page.
I feel dirty just suggesting this...
$(document).ready(function(){
// fix the url#id scrollto "effect" (that can't be
// aborted apparently in FF), by scrolling back
// to the top of the page.
$.scrollTo('body',0);
otherAnimateStuffHappensNow();
});
Credit goes to wombleton for pointing it out. Thanks!
This seems the only option I can see with ids:
$(document).ready(function() {
$.scrollTo('0px');
});
It doesn't automatically scroll to classes.
So if you identify your divs with unique classes you will lose a bit of speed with looking up elements but gain the behaviour you're after.
(Thanks, by the way, for pointing out the scroll-to-id feature! Never knew it existed.)
EDIT:
I know this is an old thread but i found something without the need to scroll. Run this first before any other scripts. It puts an anchor before the first element on the page that prevents the scroll because it is on top of the page.
function getAnchor(sUrl)
{
if( typeof sUrl == 'string' )
{
var i = sUrl.indexOf( '#' );
if( i >= 0 )
{ return sUrl.substr( i+1 ).replace(/ /g, ''); }
}
return '';
};
var s = getAnchor(window.location.href);
if( s.length > 0 )
{ $('<a name="'+s+'"/>').insertBefore($('body').first()); }
Cheers!
Erwin Haantjes
Scroll first to top (fast, no effects pls), and then call your scroll function. (I know its not so pretty)
or just use a prefix
This worked well for me:
1- put this on your css file
a[name] { position: absolute; top: 0px }
2- put this on your document.ready bind right before you start animating (if you're animating at all)
$("a[name]").css("position","relative");
Might need tweaking depending on your stylesheet/code but you get the idea.
Credit to: http://cssbeauty.com/skillshare/discussion/1882/disable-anchor-jump/

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