停止此滑块循环

Question

我有这个代码，我想阻止它循环，例如它有滑动一个幻灯片两个幻灯片三，你必须不能从幻灯片一和幻灯片一到幻灯片三滑动三。这是jquery代码

jQuery(document).ready(function ($) {

$('#checkbox').change(function(){
setInterval(function () {
    moveRight();
}, 3000);
});

var slideCount = $('#slider ul li').length;
var slideWidth = $('#slider ul li').width();
var slideHeight = $('#slider ul li').height();
var sliderUlWidth = slideCount * slideWidth;

$('#slider').css({ width: slideWidth, height: slideHeight });

$('#slider ul').css({ width: sliderUlWidth, marginLeft: - slideWidth });

$('#slider ul li:last-child').prependTo('#slider ul');

function moveLeft() {
    $('#slider ul').animate({
        left: + slideWidth
    }, 200, function () {
        $('#slider ul li:last-child').prependTo('#slider ul');
        $('#slider ul').css('left', '');
    });
};

function moveRight() {
    $('#slider ul').animate({
        left: - slideWidth
    }, 200, function () {
        $('#slider ul li:first-child').appendTo('#slider ul');
        $('#slider ul').css('left', '');
    });
};

$('a.control_prev').click(function () {
    moveLeft();
});

$('a.control_next').click(function () {
    moveRight();
});

});    

谢谢。

Answer 1

这是因为prependTo和appendTo函数没有限制。评论他们。

引入了一个变量，可以跟踪您当前所在的幻灯片，该变量将从1变为0。幻灯片。

jQuery(document).ready(function ($) {

$('#checkbox').change(function(){
setInterval(function () {
    moveRight();
}, 3000);
});

var slideCount = $('#slider ul li').length;
  var current = 1;
var slideWidth = $('#slider ul li').width();
var slideHeight = $('#slider ul li').height();
var sliderUlWidth = slideCount * slideWidth;

$('#slider').css({ width: slideWidth, height: slideHeight });

$('#slider ul').css({ width: sliderUlWidth, marginLeft: - slideWidth });

$('#slider ul li:last-child').prependTo('#slider ul');

function moveLeft() {
    $('#slider ul').animate({
        left: + slideWidth
    }, 200, function () {
        $('#slider ul li:last-child').prependTo('#slider ul');
        $('#slider ul').css('left', '');
    });
};

function moveRight() {
    $('#slider ul').animate({
        left: - slideWidth
    }, 200, function () {
        $('#slider ul li:first-child').appendTo('#slider ul');
        $('#slider ul').css('left', '');
    });
};

$('a.control_prev').click(function () {
  if(current>1){
    current--;
    moveLeft();
}
});

$('a.control_next').click(function () {
  if(current<slideCount){
    current++;
    moveRight();
  }
});

$(".slideButtons").click(function(){
   var clickedSlide =  $('.slideButtons').index(this)+1;
   $(".slideButtons").removeClass('active');
   $(this).addClass('active');
   if (current>clickedSlide){
     var diff = current-clickedSlide;
     for(var l=0;l<diff;l++){
       current--;
       moveLeft();
     }
   }
   if (current<clickedSlide){
     var diff = clickedSlide-current;
     $(".slideButtons").removeClass('active');
     $(this).addClass('active');
     for(var l=0;l<diff;l++){
       current++;
       moveRight();
     }
   }
});
});

html {
  border-top: 5px solid #fff;
  background: #58DDAF;
  color: #2a2a2a;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: 'Open Sans';
}

h1 {
  color: #fff;
  text-align: center;
  font-weight: 300;
}

#slider {
  position: relative;
  overflow: hidden;
  margin: 20px auto 0 auto;
  border-radius: 4px;
}

#slider ul {
  position: relative;
  margin: 0;
  padding: 0;
  height: 200px;
  list-style: none;
}

#slider ul li {
  position: relative;
  display: block;
  float: left;
  margin: 0;
  padding: 0;
  width: 500px;
  height: 300px;
  background: #ccc;
  text-align: center;
  line-height: 300px;
}

a.control_prev, a.control_next {
  position: absolute;
  top: 40%;
  z-index: 999;
  display: block;
  padding: 4% 3%;
  width: auto;
  height: auto;
  background: #2a2a2a;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
  opacity: 0.8;
  cursor: pointer;
}

a.control_prev:hover, a.control_next:hover {
  opacity: 1;
  -webkit-transition: all 0.2s ease;
}

a.control_prev {
  border-radius: 0 2px 2px 0;
}

a.control_next {
  right: 0;
  border-radius: 2px 0 0 2px;
}

.slider_option {
  position: relative;
  margin: 10px auto;
  width: 160px;
  font-size: 18px;
}
.slideButtons.active{
  background-color:green;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>Incredibly Basic Slider</h1>
<button class="slideButtons active">Slide 1</button>
<button class="slideButtons">Slide 2</button>
<button class="slideButtons">Slide 3</button>
<button class="slideButtons">Slide 4</button>
<div id="slider">
  <a href="#" class="control_next">></a>
  <a href="#" class="control_prev"><</a>
  <ul>
    <li>SLIDE 1</li>
    <li style="background: #aaa;">SLIDE 2</li>
    <li>SLIDE 3</li>
    <li style="background: #aaa;">SLIDE 4</li>
  </ul>  
</div>

<div class="slider_option">
  <input type="checkbox" id="checkbox">
  <label for="checkbox">Autoplay Slider</label>
</div>