Javascript图像旋转木马上的手动控件(上一个和下一个)
下面的代码使用Javascript创建幻灯片 HTMLJavascript图像旋转木马上的手动控件(上一个和下一个),javascript,jquery,html,css,Javascript,Jquery,Html,Css,下面的代码使用Javascript创建幻灯片 HTML <div id="buttons"> <a href="#" id="prev">prev</a> <a href="#" id="next">next</a> <div class="clear"></div> </div> <ul class="slider"> <li> <
<div id="buttons">
<a href="#" id="prev">prev</a>
<a href="#" id="next">next</a>
<div class="clear"></div>
</div>
<ul class="slider">
<li>
<img src="http://lorempixel.com/580/250/nature/1"> <!-- random image -->
</li>
<li>
<img src="http://lorempixel.com/580/250/nature/2"> <!-- random image -->
</li>
<li>
<img src="http://lorempixel.com/580/250/nature/3"> <!-- random image -->
</li>
<li>
<img src="http://lorempixel.com/580/250/nature/4"> <!-- random image -->
</li>
</ul>
编辑
我试过这个:
<script>
$(document).ready(function() {
var $slider = $('.slider'); // class or id of carousel slider
var $slide = 'li'; // could also use 'img' if you're not using a ul
var $transition_time = 1000; // 1 second
var $time_between_slides = 4000; // 4 seconds
function slides(){
return $slider.find($slide);
}
$('.slider img:gt(0)').hide();
$('#next').click(function() {
$('.slider img:first-child').fadeOut().next().fadeIn().end().appendTo('.slider');
});
$('#prev').click(function() {
$('.slider img:first-child').fadeOut();
$('.slider img:last-child').prependTo('.slider').fadeOut();
$('.slider img:first-child').fadeIn();
});
slides().fadeOut();
// set active classes
slides().first().addClass('active');
slides().first().fadeIn($transition_time);
// auto scroll
$interval = setInterval(
function(){
var $i = $slider.find($slide + '.active').index();
slides().eq($i).removeClass('active');
slides().eq($i).fadeOut($transition_time);
if (slides().length == $i + 1) $i = -1; // loop to start
slides().eq($i + 1).fadeIn($transition_time);
slides().eq($i + 1).addClass('active');
}
, $transition_time + $time_between_slides
);
});
</script>
$(文档).ready(函数(){
var$slider=$('.slider');//转盘滑块的类或id
var$slide='li';//如果不使用ul,也可以使用'img'
var$transition\u time=1000;//1秒
var$time\u两张幻灯片之间的间隔=4000;//4秒
函数幻灯片(){
返回$slider.find($slide);
}
$('.slider img:gt(0)').hide();
$(“#下一步”)。单击(函数(){
$('.slider img:first child').fadeOut().next().fadeIn().end().appendTo('.slider');
});
$('#prev')。单击(函数(){
$('.slider img:first child').fadeOut();
$('.slider img:last child').prependTo('.slider').fadeOut();
$('.slider img:first child').fadeIn();
});
幻灯片();
//设置活动类
幻灯片().first().addClass('active');
幻灯片().first().fadeIn($transition\u time);
//自动滚动
$interval=setInterval(
函数(){
var$i=$slider.find($slide+'.active').index();
slides().eq($i).removeClass('active');
幻灯片();
如果(slides().length==$i+1)$i=-1;//循环开始
幻灯片().eq($i+1).fadeIn($transition\u time);
slides().eq($i+1).addClass('active');
}
,$transition\u time+$time\u幻灯片之间的时间
);
});
现在手动按钮起作用了,但是自动滚动幻灯片的间隔不再起作用了,只有在单击按钮时幻灯片才会改变。如何使自动幻灯片放映功能保持以前的工作状态?试试看
$('.img-wrap img:gt(0)').hide();
$('.next').click(function() {
$('.img-wrap img:first-child').fadeOut().next().fadeIn().end().appendTo('.img-wrap');
});
$('.prev').click(function() {
$('.img-wrap img:first-child').fadeOut();
$('.img-wrap img:last-child').prependTo('.img-wrap').fadeOut();
$('.img-wrap img:first-child').fadeIn();
});
将匿名函数从间隔调用中去掉,使其成为常规函数,以便next、prev和interval可以调用它,修改它以使用方向变量而不是硬编码的值。这将使我们能够控制旋转木马与用户交互的方向 我添加了第二个计时器,
autoturnitimer
,以在3秒后(加上初始间隔时间)没有用户交互时重新启动自动转弯功能
var$interval,自动翻转计时器;
...
功能转盘(方向){
var$i=$slider.find($slide+'.active').index();
slides().eq($i).removeClass('active');
幻灯片();
$i=$i+方向;
如果($i>=slides().length){
$i=0;//要开始的循环
}我试过了,手动按钮也能用,但是现在自动幻灯片放映不能用了。
<script>
$(document).ready(function() {
var $slider = $('.slider'); // class or id of carousel slider
var $slide = 'li'; // could also use 'img' if you're not using a ul
var $transition_time = 1000; // 1 second
var $time_between_slides = 4000; // 4 seconds
function slides(){
return $slider.find($slide);
}
$('.slider img:gt(0)').hide();
$('#next').click(function() {
$('.slider img:first-child').fadeOut().next().fadeIn().end().appendTo('.slider');
});
$('#prev').click(function() {
$('.slider img:first-child').fadeOut();
$('.slider img:last-child').prependTo('.slider').fadeOut();
$('.slider img:first-child').fadeIn();
});
slides().fadeOut();
// set active classes
slides().first().addClass('active');
slides().first().fadeIn($transition_time);
// auto scroll
$interval = setInterval(
function(){
var $i = $slider.find($slide + '.active').index();
slides().eq($i).removeClass('active');
slides().eq($i).fadeOut($transition_time);
if (slides().length == $i + 1) $i = -1; // loop to start
slides().eq($i + 1).fadeIn($transition_time);
slides().eq($i + 1).addClass('active');
}
, $transition_time + $time_between_slides
);
});
</script>
$('.img-wrap img:gt(0)').hide();
$('.next').click(function() {
$('.img-wrap img:first-child').fadeOut().next().fadeIn().end().appendTo('.img-wrap');
});
$('.prev').click(function() {
$('.img-wrap img:first-child').fadeOut();
$('.img-wrap img:last-child').prependTo('.img-wrap').fadeOut();
$('.img-wrap img:first-child').fadeIn();
});
var $interval, autoTurnTimer;
...
function turnCarousel(direction){
var $i = $slider.find($slide + '.active').index();
slides().eq($i).removeClass('active');
slides().eq($i).fadeOut($transition_time);
$i = $i+direction;
if ($i >= slides().length ) {
$i = 0; // loop to start
}else if($i<0){
$i = slides().length-1; //loop to end
}
slides().eq($i).fadeIn($transition_time);
slides().eq($i).addClass('active');
}
function startAutoTurn(){
$interval = setInterval(
turnCarousel.bind(null,1)
, $transition_time + $time_between_slides
);
}
$("#next").click(function(){
//Clears the timers so not to compete against
//user interaction
clearInterval($interval);
clearTimeout(autoTurnTimer);
turnCarousel(1);
autoTurnTimer = setTimeout(startAutoTurn,3000);
});
$("#prev").click(function(){
//Clears the timers so not to compete against
//user interaction
clearInterval($interval);
clearTimeout(autoTurnTimer);
turnCarousel(-1);
autoTurnTimer = setTimeout(startAutoTurn,3000);
});