So I currently use something like:
$(window).resize(function(){resizedw();});
But this gets called many times while resizing process goes on. Is it possible to catch an event when it ends?
You can use setTimeout() and clearTimeout()
function resizedw(){
// Haven't resized in 100ms!
}
var doit;
window.onresize = function(){
clearTimeout(doit);
doit = setTimeout(resizedw, 100);
};
Code example on jsfiddle.
I had luck with the following recommendation: http://forum.jquery.com/topic/the-resizeend-event
Here's the code so you don't have to dig through his post's link & source:
var rtime;
var timeout = false;
var delta = 200;
$(window).resize(function() {
rtime = new Date();
if (timeout === false) {
timeout = true;
setTimeout(resizeend, delta);
}
});
function resizeend() {
if (new Date() - rtime < delta) {
setTimeout(resizeend, delta);
} else {
timeout = false;
alert('Done resizing');
}
}
Thanks sime.vidas for the code!
This is the code that I write according to #Mark Coleman answer:
$(window).resize(function() {
clearTimeout(window.resizedFinished);
window.resizedFinished = setTimeout(function(){
console.log('Resized finished.');
}, 250);
});
Thanks Mark!
Internet Explorer provides a resizeEnd event. Other browsers will trigger the resize event many times while you're resizing.
There are other great answers here that show how to use setTimeout and the .throttle, .debounce methods from lodash and underscore, so I will mention Ben Alman's throttle-debounce jQuery plugin which accomplishes what you're after.
Suppose you have this function that you want to trigger after a resize:
function onResize() {
console.log("Resize just happened!");
};
Throttle Example
In the following example, onResize() will only be called once every 250 milliseconds during a window resize.
$(window).resize( $.throttle( 250, onResize) );
Debounce Example
In the following example, onResize() will only be called once at the end of a window resizing action. This achieves the same result that #Mark presents in his answer.
$(window).resize( $.debounce( 250, onResize) );
There is an elegant solution using the Underscore.js So, if you are using it in your project you can do the following -
$( window ).resize( _.debounce( resizedw, 500 ) );
This should be enough :) But, If you are interested to read more on that, you can check my blog post - http://rifatnabi.com/post/detect-end-of-jquery-resize-event-using-underscore-debounce(deadlink)
There is a much simpler method to execute a function at the end of the resize than calculate the delta time between two calls, simply do it like this :
var resizeId;
$(window).resize(function() {
clearTimeout(resizeId);
resizeId = setTimeout(resizedEnded, 500);
});
function resizedEnded(){
...
}
And the equivalent for Angular2 :
private resizeId;
#HostListener('window:resize', ['$event'])
onResized(event: Event) {
clearTimeout(this.resizeId);
this.resizeId = setTimeout(() => {
// Your callback method here.
}, 500);
}
For the angular method, use the () => { } notation in the setTimeout to preserve the scope, otherwise you will not be able to make any function calls or use this.
One solution is extend jQuery with a function, e.g.: resized
$.fn.resized = function (callback, timeout) {
$(this).resize(function () {
var $this = $(this);
if ($this.data('resizeTimeout')) {
clearTimeout($this.data('resizeTimeout'));
}
$this.data('resizeTimeout', setTimeout(callback, timeout));
});
};
Sample usage:
$(window).resized(myHandler, 300);
You can store a reference id to any setInterval or setTimeout. Like this:
var loop = setInterval(func, 30);
// some time later clear the interval
clearInterval(loop);
To do this without a "global" variable you can add a local variable to the function itself. Ex:
$(window).resize(function() {
clearTimeout(this.id);
this.id = setTimeout(doneResizing, 500);
});
function doneResizing(){
$("body").append("<br/>done!");
}
You can use setTimeout() and clearTimeout() in conjunction with jQuery.data:
$(window).resize(function() {
clearTimeout($.data(this, 'resizeTimer'));
$.data(this, 'resizeTimer', setTimeout(function() {
//do something
alert("Haven't resized in 200ms!");
}, 200));
});
Update
I wrote an extension to enhance jQuery's default on (& bind)-event-handler. It attaches an event handler function for one or more events to the selected elements if the event was not triggered for a given interval. This is useful if you want to fire a callback only after a delay, like the resize event, or else.
https://github.com/yckart/jquery.unevent.js
;(function ($) {
var methods = { on: $.fn.on, bind: $.fn.bind };
$.each(methods, function(k){
$.fn[k] = function () {
var args = [].slice.call(arguments),
delay = args.pop(),
fn = args.pop(),
timer;
args.push(function () {
var self = this,
arg = arguments;
clearTimeout(timer);
timer = setTimeout(function(){
fn.apply(self, [].slice.call(arg));
}, delay);
});
return methods[k].apply(this, isNaN(delay) ? arguments : args);
};
});
}(jQuery));
Use it like any other on or bind-event handler, except that you can pass an extra parameter as a last:
$(window).on('resize', function(e) {
console.log(e.type + '-event was 200ms not triggered');
}, 200);
http://jsfiddle.net/ARTsinn/EqqHx/
Mark Coleman's answer is certainly far better than the selected answer, but if you want to avoid the global variable for the timeout ID (the doit variable in Mark's answer), you could do one of the following:
(1) Use a an immediately invoked function expression (IIFE) to create a closure.
$(window).resize((function() { // This function is immediately invoked
// and returns the closure function.
var timeoutId;
return function() {
clearTimeout(timeoutId);
timeoutId = setTimeout(function() {
timeoutId = null; // You could leave this line out.
// Code to execute on resize goes here.
}, 100);
};
})());
(2) Use a property of the event handler function.
$(window).resize(function() {
var thisFunction = arguments.callee;
clearTimeout(thisFunction.timeoutId);
thisFunction.timeoutId = setTimeout(function() {
thisFunction.timeoutId = null; // You could leave this line out.
// Code to execute on resize goes here.
}, 100);
});
This is what I use for delaying repeated actions, it can be called in multiple places in your code:
function debounce(func, wait, immediate) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
if (!immediate) func.apply(context, args);
};
var callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
};
Usage:
$(window).resize(function () {
debounce(function() {
//...
}, 500);
});
ResizeStart and ResizeEnd events for window
http://jsfiddle.net/04fLy8t4/
I implemented a function which trigs two events on the user DOM element:
resizestart
resizeend
Code:
var resizeEventsTrigger = (function () {
function triggerResizeStart($el) {
$el.trigger('resizestart');
isStart = !isStart;
}
function triggerResizeEnd($el) {
clearTimeout(timeoutId);
timeoutId = setTimeout(function () {
$el.trigger('resizeend');
isStart = !isStart;
}, delay);
}
var isStart = true;
var delay = 200;
var timeoutId;
return function ($el) {
isStart ? triggerResizeStart($el) : triggerResizeEnd($el);
};
})();
$("#my").on('resizestart', function () {
console.log('resize start');
});
$("#my").on('resizeend', function () {
console.log('resize end');
});
window.onresize = function () {
resizeEventsTrigger( $("#my") );
};
This is a modification to Dolan's code above, I've added a feature which checks the window size at the start of the resize and compares it to the size at the end of the resize, if size is either bigger or smaller than the margin (eg. 1000) then it reloads.
var rtime = new Date(1, 1, 2000, 12,00,00);
var timeout = false;
var delta = 200;
var windowsize = $window.width();
var windowsizeInitial = $window.width();
$(window).on('resize',function() {
windowsize = $window.width();
rtime = new Date();
if (timeout === false) {
timeout = true;
setTimeout(resizeend, delta);
}
});
function resizeend() {
if (new Date() - rtime < delta) {
setTimeout(resizeend, delta);
return false;
} else {
if (windowsizeInitial > 1000 && windowsize > 1000 ) {
setTimeout(resizeend, delta);
return false;
}
if (windowsizeInitial < 1001 && windowsize < 1001 ) {
setTimeout(resizeend, delta);
return false;
} else {
timeout = false;
location.reload();
}
}
windowsizeInitial = $window.width();
return false;
}
Here is VERY simple script to trigger both a 'resizestart' and 'resizeend' event on the window object.
There is no need to muck around with dates and times.
The d variable represents the number of milliseconds between resize events before triggering the resize end event, you can play with this to change how sensitive the end event is.
To listen to these events all you need to do is:
resizestart: $(window).on('resizestart', function(event){console.log('Resize Start!');});
resizeend:
$(window).on('resizeend', function(event){console.log('Resize End!');});
(function ($) {
var d = 250, t = null, e = null, h, r = false;
h = function () {
r = false;
$(window).trigger('resizeend', e);
};
$(window).on('resize', function (event) {
e = event || e;
clearTimeout(t);
if (!r) {
$(window).trigger('resizestart', e);
r = true;
}
t = setTimeout(h, d);
});
}(jQuery));
i wrote a litte wrapper function on my own...
onResize = function(fn) {
if(!fn || typeof fn != 'function')
return 0;
var args = Array.prototype.slice.call(arguments, 1);
onResize.fnArr = onResize.fnArr || [];
onResize.fnArr.push([fn, args]);
onResize.loop = function() {
$.each(onResize.fnArr, function(index, fnWithArgs) {
fnWithArgs[0].apply(undefined, fnWithArgs[1]);
});
};
$(window).on('resize', function(e) {
window.clearTimeout(onResize.timeout);
onResize.timeout = window.setTimeout("onResize.loop();", 300);
});
};
Here is the usage:
var testFn = function(arg1, arg2) {
console.log('[testFn] arg1: '+arg1);
console.log('[testFn] arg2: '+arg2);
};
// document ready
$(function() {
onResize(testFn, 'argument1', 'argument2');
});
(function(){
var special = jQuery.event.special,
uid1 = 'D' + (+new Date()),
uid2 = 'D' + (+new Date() + 1);
special.resizestart = {
setup: function() {
var timer,
handler = function(evt) {
var _self = this,
_args = arguments;
if (timer) {
clearTimeout(timer);
} else {
evt.type = 'resizestart';
jQuery.event.handle.apply(_self, _args);
}
timer = setTimeout( function(){
timer = null;
}, special.resizestop.latency);
};
jQuery(this).bind('resize', handler).data(uid1, handler);
},
teardown: function(){
jQuery(this).unbind( 'resize', jQuery(this).data(uid1) );
}
};
special.resizestop = {
latency: 200,
setup: function() {
var timer,
handler = function(evt) {
var _self = this,
_args = arguments;
if (timer) {
clearTimeout(timer);
}
timer = setTimeout( function(){
timer = null;
evt.type = 'resizestop';
jQuery.event.handle.apply(_self, _args);
}, special.resizestop.latency);
};
jQuery(this).bind('resize', handler).data(uid2, handler);
},
teardown: function() {
jQuery(this).unbind( 'resize', jQuery(this).data(uid2) );
}
};
})();
$(window).bind('resizestop',function(){
//...
});
Well, as far as the window manager is concerned, each resize event is its own message, with a distinct beginning and end, so technically, every time the window is resized, it is the end.
Having said that, maybe you want to set a delay to your continuation? Here's an example.
var t = -1;
function doResize()
{
document.write('resize');
}
$(document).ready(function(){
$(window).resize(function(){
clearTimeout(t);
t = setTimeout(doResize, 1000);
});
});
I guess my case might be different from some others but I had a problem only with orientation change on iOS but wanted the resize event to run immediately. I used the ScreenOrientation API:
screen.orientation.addEventListener('change', (e) => {});
I took a slightly different tack and relied on mouseUp as the end of the resize event. trackSize is called on documentReady and the initial value of wide is set then, too.
var THRESHOLD = 784;
var TALL = 125, SHORT = 50;
var wide = (window.document.body.clientWidth >= THRESHOLD );
function trackSize() {
if( !wide ) {
setHeight( TALL );
} else {
setHeight( SHORT );
}
parent.window.addEventListener('resize', onResize);
}
function onResize(e) {
parent.window.removeEventListener('resize', onResize);
parent.window.addEventListener('mouseup', onMouseUp) ;
}
function onMouseUp(e) {
parent.window.removeEventListener('mouseup', onMouseUp);
wide = (window.document.body.clientWidth >= THRESHOLD);
trackSize();
}
After having set our window's initial height, we begin listening for a resize event. When it starts, we stop listening and start listening for the mouseUp event. Thus, we know that mouseUp will end the resizing. In mouseUp, we stop listening and set a toggle based on the window's width, then loop back to trackSize.
trackSize starts by setting the window's height based on the toggle -- if below the threshold, we increase height (because Bootstrap columns stack at small widths), otherwise set to standard. And then we listen again for the next resize event.
CAVEAT: This solution doesn't really work for resizing instantly using the maximize or restore window buttons. Maybe adding a test like isMouseDown and bypassing the mouse listener would suffice - I haven't yet tested that.
since the selected answer didn't actually work .. and if you're not using jquery here is a simple throttle function with an example of how to use it with window resizing
function throttle(end,delta) {
var base = this;
base.wait = false;
base.delta = 200;
base.end = end;
base.trigger = function(context) {
//only allow if we aren't waiting for another event
if ( !base.wait ) {
//signal we already have a resize event
base.wait = true;
//if we are trying to resize and we
setTimeout(function() {
//call the end function
if(base.end) base.end.call(context);
//reset the resize trigger
base.wait = false;
}, base.delta);
}
}
};
var windowResize = new throttle(function() {console.log('throttle resize');},200);
window.onresize = function(event) {
windowResize.trigger();
}
this worked for me as I did not want to use any plugins.
$(window).resize(function() {
var originalWindowSize = 0;
var currentWidth = 0;
var setFn = function () {
originalWindowSize = $(window).width();
};
var checkFn = function () {
setTimeout(function () {
currentWidth = $(window).width();
if (currentWidth === originalWindowSize) {
console.info("same? = yes")
// execute code
} else {
console.info("same? = no");
// do nothing
}
}, 500)
};
setFn();
checkFn();
});
On window re-size invoke "setFn" which gets width of window and save as "originalWindowSize". Then invoke "checkFn" which after 500ms (or your preference) gets the current window size, and compares the original to the current, if they are not the same, then the window is still being re-sized. Don't forget to remove console messages in production, and (optional) can make "setFn" self executing.
var resizeTimer;
$( window ).resize(function() {
if(resizeTimer){
clearTimeout(resizeTimer);
}
resizeTimer = setTimeout(function() {
//your code here
resizeTimer = null;
}, 200);
});
This worked for what I was trying to do in chrome. This won't fire the callback until 200ms after last resize event.
UPDATE!
Better alternative also created by me is here:
https://stackoverflow.com/a/23692008/2829600
(supports "delete functions")
ORIGINAL POST:
I wrote this simple function for handling delay in execution, useful inside jQuery .scroll() and .resize() So callback_f will run only once for specific id string.
function delay_exec( id, wait_time, callback_f ){
// IF WAIT TIME IS NOT ENTERED IN FUNCTION CALL,
// SET IT TO DEFAULT VALUE: 0.5 SECOND
if( typeof wait_time === "undefined" )
wait_time = 500;
// CREATE GLOBAL ARRAY(IF ITS NOT ALREADY CREATED)
// WHERE WE STORE CURRENTLY RUNNING setTimeout() FUNCTION FOR THIS ID
if( typeof window['delay_exec'] === "undefined" )
window['delay_exec'] = [];
// RESET CURRENTLY RUNNING setTimeout() FUNCTION FOR THIS ID,
// SO IN THAT WAY WE ARE SURE THAT callback_f WILL RUN ONLY ONE TIME
// ( ON LATEST CALL ON delay_exec FUNCTION WITH SAME ID )
if( typeof window['delay_exec'][id] !== "undefined" )
clearTimeout( window['delay_exec'][id] );
// SET NEW TIMEOUT AND EXECUTE callback_f WHEN wait_time EXPIRES,
// BUT ONLY IF THERE ISNT ANY MORE FUTURE CALLS ( IN wait_time PERIOD )
// TO delay_exec FUNCTION WITH SAME ID AS CURRENT ONE
window['delay_exec'][id] = setTimeout( callback_f , wait_time );
}
// USAGE
jQuery(window).resize(function() {
delay_exec('test1', 1000, function(){
console.log('1st call to delay "test1" successfully executed!');
});
delay_exec('test1', 1000, function(){
console.log('2nd call to delay "test1" successfully executed!');
});
delay_exec('test1', 1000, function(){
console.log('3rd call to delay "test1" successfully executed!');
});
delay_exec('test2', 1000, function(){
console.log('1st call to delay "test2" successfully executed!');
});
delay_exec('test3', 1000, function(){
console.log('1st call to delay "test3" successfully executed!');
});
});
/* RESULT
3rd call to delay "test1" successfully executed!
1st call to delay "test2" successfully executed!
1st call to delay "test3" successfully executed!
*/
var flag=true;
var timeloop;
$(window).resize(function(){
rtime=new Date();
if(flag){
flag=false;
timeloop=setInterval(function(){
if(new Date()-rtime>100)
myAction();
},100);
}
})
function myAction(){
clearInterval(timeloop);
flag=true;
//any other code...
}
I don't know is my code work for other but it's really do a great job for me. I got this idea by analyzing Dolan Antenucci code because his version is not work for me and I really hope it'll be helpful to someone.
var tranStatus = false;
$(window).resizeend(200, function(){
$(".cat-name, .category").removeAttr("style");
//clearTimeout(homeResize);
$("*").one("webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend",function(event) {
tranStatus = true;
});
processResize();
});
function processResize(){
homeResize = setInterval(function(){
if(tranStatus===false){
console.log("not yet");
$("*").one("webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend",function(event) {
tranStatus = true;
});
}else{
text_height();
clearInterval(homeResize);
}
},200);
}
I wrote a function that passes a function when wrapped in any resize event. It uses an interval so that the resize even isn't constantly creating timeout events. This allows it to perform independently of the resize event other than a log entry that should be removed in production.
https://github.com/UniWrighte/resizeOnEnd/blob/master/resizeOnEnd.js
$(window).resize(function(){
//call to resizeEnd function to execute function on resize end.
//can be passed as function name or anonymous function
resizeEnd(function(){
});
});
//global variables for reference outside of interval
var interval = null;
var width = $(window).width();
var numi = 0; //can be removed in production
function resizeEnd(functionCall){
//check for null interval
if(!interval){
//set to new interval
interval = setInterval(function(){
//get width to compare
width2 = $(window).width();
//if stored width equals new width
if(width === width2){
//clear interval, set to null, and call passed function
clearInterval(interval);
interval = null; //precaution
functionCall();
}
//set width to compare on next interval after half a second
width = $(window).width();
}, 500);
}else{
//logging that should be removed in production
console.log("function call " + numi++ + " and inteval set skipped");
}
}
I'm using Skrollr-menu to animate down a page on a button press using the following
HTML
<div class="trigger-scroll left">></div>
... the page i want to reveal, using scrolling ...
<section id="End" class="scroll-here">
<div class="hsContainer bottom"></div>
</section>
JavaScript
var s = skrollr.init();
skrollr.menu.init(s, {
animate: true,
//How long the animation should take in ms.
duration: function(currentTop, targetTop) {
//By default, the duration is hardcoded at 500ms.
return 18000;
//But you could calculate a value based on the current scroll position (`currentTop`) and the target scroll position (`targetTop`).
//return Math.abs(currentTop - targetTop) * 10;
},
//This event is triggered right before we jump/animate to a new hash.
change: function(newHash, newTopPosition) {
//Do stuff
},
//Add hash link (e.g. `#foo`) to URL or not.
updateUrl: false //defaults to `true`.
});
What happens when I click the button is that it works, that is not the problem.
The problem is that it seems to change speed as skrollr-menu animates the page. It starts off quite quickly, which means that the first few elements on the page (about the first 2000px) flash past without being readable. Then the speed evens out and is fine right until the last 3000px (approximately) where skrollr-menu is very slow. What I want is for the click of the button to resemble holding the down arrow on the keyboard or the scroll sidebar, which by default it seems skrollr-menu does not do.
I've tried using math equations to change the speed but the issue persists no matter what i try, and there doesn't seem to be any "simple" way to change the acceleration speed, and I suspect the problem is somewhere within the Skrollr.menu.js file, but I can't see where.
Is there any way which I can make the scrolling an even speed, rather than fast at the start and slow at the end?
Note: I'm not very experienced in JavaScript or jQuery, so it's probably something simple I've overlooked.
skrollr menu on github
https://github.com/Prinzhorn/skrollr-menu
Skrollr.menu.js
/*!
* Plugin for skrollr.
* This plugin makes hashlinks scroll nicely to their target position.
*
* Alexander Prinzhorn - https://github.com/Prinzhorn/skrollr
*
* Free to use under terms of MIT license
*/
(function(document, window) {
'use strict';
var DEFAULT_DURATION = 500;
var DEFAULT_EASING = 'sqrt';
var DEFAULT_SCALE = 1;
var MENU_TOP_ATTR = 'data-menu-top';
var MENU_OFFSET_ATTR = 'data-menu-offset';
var MENU_DURATION_ATTR = 'data-menu-duration';
var MENU_IGNORE_ATTR = 'data-menu-ignore';
var skrollr = window.skrollr;
var history = window.history;
var supportsHistory = !!history.pushState;
/*
Since we are using event bubbling, the element that has been clicked
might not acutally be the link but a child.
*/
var findParentLink = function(element) {
//We reached the top, no link found.
if(element === document) {
return false;
}
//Yay, it's a link!
if(element.tagName.toUpperCase() === 'A') {
return element;
}
//Maybe the parent is a link.
return findParentLink(element.parentNode);
};
/*
Handle the click event on the document.
*/
var handleClick = function(e) {
//Only handle left click.
if(e.which !== 1 && e.button !== 0) {
return;
}
var link = findParentLink(e.target);
//The click did not happen inside a link.
if(!link) {
return;
}
if(handleLink(link)) {
e.preventDefault();
}
};
/*
Handles the click on a link. May be called without an actual click event.
When the fake flag is set, the link won't change the url and the position won't be animated.
*/
var handleLink = function(link, fake) {
var hash;
//When complexLinks is enabled, we also accept links which do not just contain a simple hash.
if(_complexLinks) {
//The link points to something completely different.
if(link.hostname !== window.location.hostname) {
return false;
}
//The link does not link to the same page/path.
if(link.pathname !== document.location.pathname) {
return false;
}
hash = link.hash;
} else {
//Don't use the href property (link.href) because it contains the absolute url.
hash = link.getAttribute('href');
}
//Not a hash link.
if(!/^#/.test(hash)) {
return false;
}
//The link has the ignore attribute.
if(!fake && link.getAttribute(MENU_IGNORE_ATTR) !== null) {
return false;
}
//Now get the targetTop to scroll to.
var targetTop;
var menuTop;
//If there's a handleLink function, it overrides the actual anchor offset.
if(_handleLink) {
menuTop = _handleLink(link);
}
//If there's a data-menu-top attribute and no handleLink function, it overrides the actual anchor offset.
else {
menuTop = link.getAttribute(MENU_TOP_ATTR);
}
if(menuTop !== null) {
//Is it a percentage offset?
if(/p$/.test(menuTop)) {
targetTop = (menuTop.slice(0, -1) / 100) * document.documentElement.clientHeight;
} else {
targetTop = +menuTop * _scale;
}
} else {
var scrollTarget = document.getElementById(hash.substr(1));
//Ignore the click if no target is found.
if(!scrollTarget) {
return false;
}
targetTop = _skrollrInstance.relativeToAbsolute(scrollTarget, 'top', 'top');
var menuOffset = scrollTarget.getAttribute(MENU_OFFSET_ATTR);
if(menuOffset !== null) {
targetTop += +menuOffset;
}
}
if(supportsHistory && _updateUrl && !fake) {
history.pushState({top: targetTop}, '', hash);
}
var menuDuration = parseInt(link.getAttribute(MENU_DURATION_ATTR), 10);
var animationDuration = _duration(_skrollrInstance.getScrollTop(), targetTop);
if(!isNaN(menuDuration)) {
animationDuration = menuDuration;
}
//Trigger the change if event if there's a listener.
if(_change) {
_change(hash, targetTop);
}
//Now finally scroll there.
if(_animate && !fake) {
_skrollrInstance.animateTo(targetTop, {
duration: animationDuration,
easing: _easing
});
} else {
defer(function() {
_skrollrInstance.setScrollTop(targetTop);
});
}
return true;
};
var jumpStraightToHash = function() {
if(window.location.hash && document.querySelector) {
var link = document.querySelector('a[href="' + window.location.hash + '"]');
if(!link) {
// No link found on page, so we create one and then activate it
link = document.createElement('a');
link.href = window.location.hash;
}
handleLink(link, true);
}
};
var defer = function(fn) {
window.setTimeout(fn, 1);
};
/*
Global menu function accessible through window.skrollr.menu.init.
*/
skrollr.menu = {};
skrollr.menu.init = function(skrollrInstance, options) {
_skrollrInstance = skrollrInstance;
options = options || {};
_easing = options.easing || DEFAULT_EASING;
_animate = options.animate !== false;
_duration = options.duration || DEFAULT_DURATION;
_handleLink = options.handleLink;
_scale = options.scale || DEFAULT_SCALE;
_complexLinks = options.complexLinks === true;
_change = options.change;
_updateUrl = options.updateUrl !== false;
if(typeof _duration === 'number') {
_duration = (function(duration) {
return function() {
return duration;
};
}(_duration));
}
//Use event bubbling and attach a single listener to the document.
skrollr.addEvent(document, 'click', handleClick);
if(supportsHistory) {
skrollr.addEvent(window, 'popstate', function(e) {
var state = e.state || {};
var top = state.top || 0;
defer(function() {
_skrollrInstance.setScrollTop(top);
});
}, false);
}
jumpStraightToHash();
};
//Expose the handleLink function to be able to programmatically trigger clicks.
skrollr.menu.click = function(link) {
//We're not assigning it directly to `click` because of the second ("private") parameter.
handleLink(link);
};
//Private reference to the initialized skrollr.
var _skrollrInstance;
var _easing;
var _duration;
var _animate;
var _handleLink;
var _scale;
var _complexLinks;
var _change;
var _updateUrl;
//In case the page was opened with a hash, prevent jumping to it.
//http://stackoverflow.com/questions/3659072/jquery-disable-anchor-jump-when-loading-a-page
defer(function() {
if(window.location.hash) {
window.scrollTo(0, 0);
}
});
}(document, window));
The problem was the easing function found here
//Now finally scroll there.
if(_animate && !fake) {
_skrollrInstance.animateTo(targetTop, {
duration: animationDuration,
easing: _easing
});
} else {
defer(function() {
_skrollrInstance.setScrollTop(targetTop);
});
}
return true;
It seems that, even though Skrollr states that easing's default is linear (no easing), the default is ACTUALLY set to sqrt (or at least it was in my case). The problem can be solved by forcing easing to linear in skrollr.menu.init, or chaning the skrollr.menu.js file to remove easing from the function. The first of these two solutions is cleaner, and won't cause issues later.
skrollr.menu.init(s, {
duration: function(currentTop, targetTop) {return 20000;},
easing: 'linear'
});
I'm writing some form validation functions, and I've decided to go with jQueryUI for prompting the user because of flexibility.
There is a slight problem tho. I want my functions to return an array which consists of a boolean and a string for my error reporting system. JQueryUI dialogs are asynchronous which means the browser won't hang and wait for a return value as the native prompt() would.
Here is some sample code:
Validator function:
function verifyTOS_PVM_v2()
{
verifyTOS_PVM_v2_callback = '';
if(!empty($('#inputPVM').val())) {
$('#inputPVM').val(date('d.m.Y', parseFinnishDate($('#inputPVM').val())));
val = $('#inputPVM').val()
date = parseFinnishDate($('#inputPVM').val());
today = today();
diff = Math.floor((date - today)/60/60/24);
if(diff <= -14)
{
buttons =
[
{
text:"Kyllä",
click:function()
{
$(this).dialog('destroy');
verifyTOS_PVM_v2_callback = "Kyllä"
}
},
{
text:"Ei",
click:function()
{
$(this).dialog('destroy');
verifyTOS_PVM_v2_callback = "Ei"
}
}
]
jQueryPrompt('Message', 'Koskien päivämäärää...', 400, buttons);
while(verifyTOS_PVM_v2_callback != "Kyllä" && verifyTOS_PVM_v2_callback != "Ei")
{
setTimeout('i = i + 1', 50)
}
res = verifyTOS_PVM_v2_callback;
if(res == "Kyllä")
{
error_occured = 2;
error = 'Message'
}
else
{
error_occured = 1;
error = 'Message'
}
}
} else {
error_occurred = 1;
error = "Message";
}
reterr[0] = error_occurred;
reterr[1] = error;
return reterr;
}
Prompt function:
function jQueryPrompt(msg, title, width, buttons)
{
$('body').append('<div id="jQueryPromptHost"></div>');
$('#jQueryPromptHost').append(msg);
$('#jQueryPromptHost').dialog({
title: title,
resizable: false,
width: width,
daraggable: false,
modal: true,
buttons: buttons
})
}
I have tried polling for a variable and that failed miserably (firefox just hanged and took more memory for itself...)
Do you have any suggestions?
Regards,
Akke
EDIT:
I have picked another approach to this problem. I marked the closest solution as the answer, in case someone else picks his approach. Thank you all!
In your click event handler simply call a function instead of assigning a value.
buttons = [
{
text:"Kyllä",
click: function() {
$(this).dialog('destroy');
handleButtonClick("Kyllä");
//verifyTOS_PVM_v2_callback = "Kyllä"
}
},
{
text:"Ei",
click: function() {
$(this).dialog('destroy');
handleButtonClick("Ei");
//verifyTOS_PVM_v2_callback = "Ei"
}
}
]
//Somewhere else in the code
var handleButtonClick = function(value) {
if (value == "Kyllä") {
...
} else if (value == "Ei") {
...
}
};
while loop is locking, you can not use it.
Going to have to break up the function into two parts. First part is code before you call the dialog, second part is the part after the dialog. The dialog button clicks call the second function.
If the code has to be synchronous, you are sort of out of luck and stuck with the ugly window.prompt.
I wrote a slideshow plugin, but for some reason maybe because I've been working on it all day, I can't figure out exactly how to get it to go back to state one, once it's reached the very last state when it's on auto mode.
I'm thinking it's an architectual issue at this point, because basically I'm attaching the amount to scroll left to (negatively) for each panel (a panel contains 4 images which is what is currently shown to the user). The first tab should get: 0, the second 680, the third, 1360, etc. This is just done by calculating the width of the 4 images plus the padding.
I have it on a setTimeout(function(){}) currently to automatically move it which works pretty well (unless you also click tabs, but that's another issue). I just want to make it so when it's at the last state (numTabs - 1), to animate and move its state back to the first one.
Code:
(function($) {
var methods = {
init: function(options) {
var settings = $.extend({
'speed': '1000',
'interval': '1000',
'auto': 'on'
}, options);
return this.each(function() {
var $wrapper = $(this);
var $sliderContainer = $wrapper.find('.js-slider-container');
$sliderContainer.hide().fadeIn();
var $tabs = $wrapper.find('.js-slider-tabs li a');
var numTabs = $tabs.size();
var innerWidth = $wrapper.find('.js-slider-container').width();
var $elements = $wrapper.find('.js-slider-container a');
var $firstElement = $elements.first();
var containerHeight = $firstElement.height();
$sliderContainer.height(containerHeight);
// Loop through each list element in `.js-slider-tabs` and add the
// distance to move for each "panel". A panel in this example is 4 images
$tabs.each(function(i) {
// Set amount to scroll for each tab
if (i === 1) {
$(this).attr('data-to-move', innerWidth + 20); // 20 is the padding between elements
} else {
$(this).attr('data-to-move', innerWidth * (i) + (i * 20));
}
});
// If they hovered on the panel, add paused to the data attribute
$('.js-slider-container').hover(function() {
$sliderContainer.attr('data-paused', true);
}, function() {
$sliderContainer.attr('data-paused', false);
});
// Start the auto slide
if (settings.auto === 'on') {
methods.auto($tabs, settings, $sliderContainer);
}
$tabs.click(function() {
var $tab = $(this);
var $panelNum = $(this).attr('data-slider-panel');
var $amountToMove = $(this).attr('data-to-move');
// Remove the active class of the `li` if it contains it
$tabs.each(function() {
var $tab = $(this);
if ($tab.parent().hasClass('active')) {
$tab.parent().removeClass('active');
}
});
// Add active state to current tab
$tab.parent().addClass('active');
// Animate to panel position
methods.animate($amountToMove, settings);
return false;
});
});
},
auto: function($tabs, settings, $sliderContainer) {
$tabs.each(function(i) {
var $amountToMove = $(this).attr('data-to-move');
setTimeout(function() {
methods.animate($amountToMove, settings, i, $sliderContainer);
}, i * settings.interval);
});
},
animate: function($amountToMove, settings, i, $sliderContainer) {
// Animate
$('.js-slider-tabs li').eq(i - 1).removeClass('active');
$('.js-slider-tabs li').eq(i).addClass('active');
$('#js-to-move').animate({
'left': -$amountToMove
}, settings.speed, 'linear', function() {});
}
};
$.fn.slider = function(method) {
if (methods[method]) {
return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
} else if (typeof method === 'object' || !method) {
return methods.init.apply(this, arguments);
} else {
return false;
}
};
})(jQuery);
$(window).ready(function() {
$('.js-slider').slider({
'speed': '10000',
'interval': '10000',
'auto': 'on'
});
});
The auto and animate methods are where the magic happens. The parameters speed is how fast it's animated and interval is how often, currently set at 10 seconds.
Can anyone help me figure out how to get this to "infinitely loop", if you will?
Here is a JSFiddle
It would probably be better to let go of the .each() and setTimeout() combo and use just setInterval() instead. Using .each() naturally limits your loop to the length of your collection, so it's better to use a looping mechanism that's not, and that you can break at any point you choose.
Besides, you can readily identify the current visible element by just checking for .active, from what I can see.
You'd probably need something like this:
setInterval(function () {
// do this check here.
// it saves you a function call and having to pass in $sliderContainer
if ($sliderContainer.attr('data-paused') === 'true') { return; }
// you really need to just pass in the settings object.
// the current element you can identify (as mentioned),
// and $amountToMove is derivable from that.
methods.animate(settings);
}, i * settings.interval);
// ...
// cache your slider tabs outside of the function
// and just form a closure on that to speed up your manips
var slidertabs = $('.js-slider-tabs');
animate : function (settings) {
// identify the current tab
var current = slidertabs.find('li.active'),
// and then do some magic to determine the next element in the loop
next = current.next().length >= 0 ?
current.next() :
slidertabs.find('li:eq(0)')
;
current.removeClass('active');
next.addClass('active');
// do your stuff
};
The code is not optimized, but I hope you see where I'm getting at here.