How to stop and play jquery script
I'm using slidesjs to create 5 different slideshows/galleries on a single-page site. They all have the class '.slides' and have their own ID.
I do not want any of the slideshows to play until a play function is called. I've been able to successfully prevent each slideshow from playing onload using the following:
function initiateSlides() {
$('.slides').slides({
generateNextPrev: true,
fadeSpeed: 800,
hoverPause: true,
play: 3000,
pause: 2500,
preloadImage: 'images/loading.gif',
effect: 'fade'
});
clearInterval($('#projects-commercial-slides').data('interval'));
clearInterval($('#projects-residential-slides').data('interval'));
clearInterval($('#projects-hospitality-slides').data('interval'));
clearInterval($('#projects-public-slides').data('interval'));
clearInterval($('#projects-industrial-slides').data('interval'));
}
(Using class '.slides' does not stop the slideshows, hence using IDs.) However, I'm now unable to play any of the slideshows. I've tried the following:
function playSlides() {
$('#projects-residential-slides').animate();
}
function playSlides() {
$('#projects-residential-slides').play();
}
function playSlides() {
$('#projects-residential-slides').animate({
animationStart:0
});
}
function playSlides() {
$('#projects-residential-slides').animate('next',fade);
}
Your suggestions would be gratefully received as I've been working on this for days now(!). I appreciate I may not be preventing the slideshows from playing in the most elegant way. The full slides.jquery.js is here:
/*
* Slides, A Slideshow Plugin for jQuery
* Intructions: http://slidesjs.com
* By: Nathan Searles, http://nathansearles.com
* Version: 1.1.8
* Updated: June 1st, 2011
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
(function($){
$.fn.slides = function( option ) {
// override defaults with specified option
option = $.extend( {}, $.fn.slides.option, option );
return this.each(function(){
// wrap slides in control container, make sure slides are block level
$('.' + option.container, $(this)).children().wrapAll('<div class="slides_control"/>');
var elem = $(this),
control = $('.slides_control',elem),
total = control.children().size(),
width = control.children().outerWidth(),
height = control.children().outerHeight(),
start = option.start - 1,
effect = option.effect.indexOf(',') < 0 ? option.effect : option.effect.replace(' ', '').split(',')[0],
paginationEffect = option.effect.indexOf(',') < 0 ? effect : option.effect.replace(' ', '').split(',')[1],
next = 0, prev = 0, number = 0, current = 0, loaded, active, clicked, position, direction, imageParent, pauseTimeout, playInterval;
// animate slides
function animate(direction, effect, clicked) {
if (!active && loaded) {
active = true;
// start of animation
option.animationStart(current + 1);
switch(direction) {
case 'next':
// change current slide to previous
prev = current;
// get next from current + 1
next = current + 1;
// if last slide, set next to first slide
next = total === next ? 0 : next;
// set position of next slide to right of previous
position = width*2;
// distance to slide based on width of slides
direction = -width*2;
// store new current slide
current = next;
break;
case 'prev':
// change current slide to previous
prev = current;
// get next from current - 1
next = current - 1;
// if first slide, set next to last slide
next = next === -1 ? total-1 : next;
// set position of next slide to left of previous
position = 0;
// distance to slide based on width of slides
direction = 0;
// store new current slide
current = next;
break;
case 'pagination':
// get next from pagination item clicked, convert to number
next = parseInt(clicked,10);
// get previous from pagination item with class of current
prev = $('.' + option.paginationClass + ' li.'+ option.currentClass +' a', elem).attr('href').match('[^#/]+$');
// if next is greater then previous set position of next slide to right of previous
if (next > prev) {
position = width*2;
direction = -width*2;
} else {
// if next is less then previous set position of next slide to left of previous
position = 0;
direction = 0;
}
// store new current slide
current = next;
break;
}
// fade animation
if (effect === 'fade') {
// fade animation with crossfade
if (option.crossfade) {
// put hidden next above current
control.children(':eq('+ next +')', elem).css({
zIndex: 10
// fade in next
}).fadeIn(option.fadeSpeed, option.fadeEasing, function(){
if (option.autoHeight) {
// animate container to height of next
control.animate({
height: control.children(':eq('+ next +')', elem).outerHeight()
}, option.autoHeightSpeed, function(){
// hide previous
control.children(':eq('+ prev +')', elem).css({
display: 'none',
zIndex: 0
});
// reset z index
control.children(':eq('+ next +')', elem).css({
zIndex: 0
});
// end of animation
option.animationComplete(next + 1);
active = false;
});
} else {
// hide previous
control.children(':eq('+ prev +')', elem).css({
display: 'none',
zIndex: 0
});
// reset 开发者_如何学Gozindex
control.children(':eq('+ next +')', elem).css({
zIndex: 0
});
// end of animation
option.animationComplete(next + 1);
active = false;
}
});
} else {
// fade animation with no crossfade
control.children(':eq('+ prev +')', elem).fadeOut(option.fadeSpeed, option.fadeEasing, function(){
// animate to new height
if (option.autoHeight) {
control.animate({
// animate container to height of next
height: control.children(':eq('+ next +')', elem).outerHeight()
}, option.autoHeightSpeed,
// fade in next slide
function(){
control.children(':eq('+ next +')', elem).fadeIn(option.fadeSpeed, option.fadeEasing);
});
} else {
// if fixed height
control.children(':eq('+ next +')', elem).fadeIn(option.fadeSpeed, option.fadeEasing, function(){
// fix font rendering in ie, lame
if($.browser.msie) {
$(this).get(0).style.removeAttribute('filter');
}
});
}
// end of animation
option.animationComplete(next + 1);
active = false;
});
}
// slide animation
} else {
// move next slide to right of previous
control.children(':eq('+ next +')').css({
left: position,
display: 'block'
});
// animate to new height
if (option.autoHeight) {
control.animate({
left: direction,
height: control.children(':eq('+ next +')').outerHeight()
},option.slideSpeed, option.slideEasing, function(){
control.css({
left: -width
});
control.children(':eq('+ next +')').css({
left: width,
zIndex: 5
});
// reset previous slide
control.children(':eq('+ prev +')').css({
left: width,
display: 'none',
zIndex: 0
});
// end of animation
option.animationComplete(next + 1);
active = false;
});
// if fixed height
} else {
// animate control
control.animate({
left: direction
},option.slideSpeed, option.slideEasing, function(){
// after animation reset control position
control.css({
left: -width
});
// reset and show next
control.children(':eq('+ next +')').css({
left: width,
zIndex: 5
});
// reset previous slide
control.children(':eq('+ prev +')').css({
left: width,
display: 'none',
zIndex: 0
});
// end of animation
option.animationComplete(next + 1);
active = false;
});
}
}
// set current state for pagination
if (option.pagination) {
// remove current class from all
$('.'+ option.paginationClass +' li.' + option.currentClass, elem).removeClass(option.currentClass);
// add current class to next
$('.' + option.paginationClass + ' li:eq('+ next +')', elem).addClass(option.currentClass);
}
}
} // end animate function
function stop() {
// clear interval from stored id
clearInterval(elem.data('interval'));
}
function pause() {
if (option.pause) {
// clear timeout and interval
clearTimeout(elem.data('pause'));
clearInterval(elem.data('interval'));
// pause slide show for option.pause amount
pauseTimeout = setTimeout(function() {
// clear pause timeout
clearTimeout(elem.data('pause'));
// start play interval after pause
playInterval = setInterval( function(){
animate("next", effect);
},option.play);
// store play interval
elem.data('interval',playInterval);
},option.pause);
// store pause interval
elem.data('pause',pauseTimeout);
} else {
// if no pause, just stop
stop();
}
}
// 2 or more slides required
if (total < 2) {
return;
}
// error corection for start slide
if (start < 0) {
start = 0;
}
if (start > total) {
start = total - 1;
}
// change current based on start option number
if (option.start) {
current = start;
}
// randomizes slide order
if (option.randomize) {
control.randomize();
}
// make sure overflow is hidden, width is set
$('.' + option.container, elem).css({
overflow: 'hidden',
// fix for ie
position: 'relative'
});
// set css for slides
control.children().css({
position: 'absolute',
top: 0,
left: control.children().outerWidth(),
zIndex: 0,
display: 'none'
});
// set css for control div
control.css({
position: 'relative',
// size of control 3 x slide width
width: (width * 3),
// set height to slide height
height: height,
// center control to slide
left: -width
});
// show slides
$('.' + option.container, elem).css({
display: 'block'
});
// if autoHeight true, get and set height of first slide
if (option.autoHeight) {
control.children().css({
height: 'auto'
});
control.animate({
height: control.children(':eq('+ start +')').outerHeight()
},option.autoHeightSpeed);
}
// checks if image is loaded
if (option.preload && control.find('img:eq(' + start + ')').length) {
// adds preload image
$('.' + option.container, elem).css({
background: 'url(' + option.preloadImage + ') no-repeat 50% 50%'
});
// gets image src, with cache buster
var img = control.find('img:eq(' + start + ')').attr('src') + '?' + (new Date()).getTime();
// check if the image has a parent
if ($('img', elem).parent().attr('class') != 'slides_control') {
// If image has parent, get tag name
imageParent = control.children(':eq(0)')[0].tagName.toLowerCase();
} else {
// Image doesn't have parent, use image tag name
imageParent = control.find('img:eq(' + start + ')');
}
// checks if image is loaded
control.find('img:eq(' + start + ')').attr('src', img).load(function() {
// once image is fully loaded, fade in
control.find(imageParent + ':eq(' + start + ')').fadeIn(option.fadeSpeed, option.fadeEasing, function(){
$(this).css({
zIndex: 5
});
// removes preload image
$('.' + option.container, elem).css({
background: ''
});
// let the script know everything is loaded
loaded = true;
// call the loaded funciton
option.slidesLoaded();
});
});
} else {
// if no preloader fade in start slide
control.children(':eq(' + start + ')').fadeIn(option.fadeSpeed, option.fadeEasing, function(){
// let the script know everything is loaded
loaded = true;
// call the loaded funciton
option.slidesLoaded();
});
}
// click slide for next
if (option.bigTarget) {
// set cursor to pointer
control.children().css({
cursor: 'pointer'
});
// click handler
control.children().click(function(){
// animate to next on slide click
animate('next', effect);
return false;
});
}
// pause on mouseover
if (option.hoverPause && option.play) {
control.bind('mouseover',function(){
// on mouse over stop
stop();
});
control.bind('mouseleave',function(){
// on mouse leave start pause timeout
pause();
});
}
// generate next/prev buttons
if (option.generateNextPrev) {
$('.' + option.container, elem).after('<a href="#" class="'+ option.prev +'">Prev</a>');
$('.' + option.prev, elem).after('<a href="#" class="'+ option.next +'">Next</a>');
}
// next button
$('.' + option.next ,elem).click(function(e){
e.preventDefault();
if (option.play) {
pause();
}
animate('next', effect);
});
// previous button
$('.' + option.prev, elem).click(function(e){
e.preventDefault();
if (option.play) {
pause();
}
animate('prev', effect);
});
// generate pagination
if (option.generatePagination) {
// create unordered list
if (option.prependPagination) {
elem.prepend('<ul class='+ option.paginationClass +'></ul>');
} else {
elem.append('<ul class='+ option.paginationClass +'></ul>');
}
// for each slide create a list item and link
control.children().each(function(){
$('.' + option.paginationClass, elem).append('<li><a href="#'+ number +'">'+ (number+1) +'</a></li>');
number++;
});
} else {
// if pagination exists, add href w/ value of item number to links
$('.' + option.paginationClass + ' li a', elem).each(function(){
$(this).attr('href', '#' + number);
number++;
});
}
// add current class to start slide pagination
$('.' + option.paginationClass + ' li:eq('+ start +')', elem).addClass(option.currentClass);
// click handling
$('.' + option.paginationClass + ' li a', elem ).click(function(){
// pause slideshow
if (option.play) {
pause();
}
// get clicked, pass to animate function
clicked = $(this).attr('href').match('[^#/]+$');
// if current slide equals clicked, don't do anything
if (current != clicked) {
animate('pagination', paginationEffect, clicked);
}
return false;
});
// click handling
$('a.link', elem).click(function(){
// pause slideshow
if (option.play) {
pause();
}
// get clicked, pass to animate function
clicked = $(this).attr('href').match('[^#/]+$') - 1;
// if current slide equals clicked, don't do anything
if (current != clicked) {
animate('pagination', paginationEffect, clicked);
}
return false;
});
if (option.play) {
// set interval
playInterval = setInterval(function() {
animate('next', effect);
}, option.play);
// store interval id
elem.data('interval',playInterval);
}
});
};
// default options
$.fn.slides.option = {
preload: false, // boolean, Set true to preload images in an image based slideshow
preloadImage: '/img/loading.gif', // string, Name and location of loading image for preloader. Default is "/img/loading.gif"
container: 'slides_container', // string, Class name for slides container. Default is "slides_container"
generateNextPrev: false, // boolean, Auto generate next/prev buttons
next: 'next', // string, Class name for next button
prev: 'prev', // string, Class name for previous button
pagination: true, // boolean, If you're not using pagination you can set to false, but don't have to
generatePagination: true, // boolean, Auto generate pagination
prependPagination: false, // boolean, prepend pagination
paginationClass: 'pagination', // string, Class name for pagination
currentClass: 'current', // string, Class name for current class
fadeSpeed: 350, // number, Set the speed of the fading animation in milliseconds
fadeEasing: '', // string, must load jQuery's easing plugin before http://gsgd.co.uk/sandbox/jquery/easing/
slideSpeed: 350, // number, Set the speed of the sliding animation in milliseconds
slideEasing: '', // string, must load jQuery's easing plugin before http://gsgd.co.uk/sandbox/jquery/easing/
start: 1, // number, Set the speed of the sliding animation in milliseconds
effect: 'slide', // string, '[next/prev], [pagination]', e.g. 'slide, fade' or simply 'fade' for both
crossfade: false, // boolean, Crossfade images in a image based slideshow
randomize: false, // boolean, Set to true to randomize slides
play: 0, // number, Autoplay slideshow, a positive number will set to true and be the time between slide animation in milliseconds
pause: 0, // number, Pause slideshow on click of next/prev or pagination. A positive number will set to true and be the time of pause in milliseconds
hoverPause: false, // boolean, Set to true and hovering over slideshow will pause it
autoHeight: false, // boolean, Set to true to auto adjust height
autoHeightSpeed: 350, // number, Set auto height animation time in milliseconds
bigTarget: false, // boolean, Set to true and the whole slide will link to next slide on click
animationStart: function(){}, // Function called at the start of animation
animationComplete: function(){}, // Function called at the completion of animation
slidesLoaded: function() {} // Function is called when slides is fully loaded
};
// Randomize slide order on load
$.fn.randomize = function(callback) {
function randomizeOrder() { return(Math.round(Math.random())-0.5); }
return($(this).each(function() {
var $this = $(this);
var $children = $this.children();
var childCount = $children.length;
if (childCount > 1) {
$children.hide();
var indices = [];
for (i=0;i<childCount;i++) { indices[indices.length] = i; }
indices = indices.sort(randomizeOrder);
$.each(indices,function(j,k) {
var $child = $children.eq(k);
var $clone = $child.clone(true);
$clone.show().appendTo($this);
if (callback !== undefined) {
callback($child, $clone);
}
$child.remove();
});
}
}));
};
})(jQuery);
I'd suggest using (or taking a look at) Slidejs 2 https://github.com/nathansearles/Slides.
Reason none of of what you're trying is working is because he never exposes those methods you're trying to call (some don't even exist). Calling slides without the play option will prevent autoplaying, but it will also initialize slidejs (wrapping the children of the container). Calling it again later will re-initialize it thus resulting it the double wrapping you mentioned.
In version 2, he added an API that would work for you:
// With slidejs2
// stopping all slides
$(".slides").each(function() { $(this).slides("stop"); });
// playing all slides
$(".slides").each(function() { $(this).slides("play"); });
Aside from that, you clearInterval code could also be written as:
$('.slides').each(function() { clearInterval($(this).data("interval")); });
加载中,请稍侯......
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