我的 jquery 滑块刷新率不会实时更新

Question

我正在尝试开发一个简单的 jquery 滑块，默认情况下，滑块每三秒在图像和文本之间切换一次（var segundos = 3;），滑块有一个用作播放/暂停操作的按钮和一个菜单选项这使您可以增加或减少每次在图像之间切换的秒数。这是通过 .resta 和 .suma（减少和减少）类完成的。

现在，滑块运行良好，但有一个问题，当 segundos 变量（segundos 表示秒）更改时效果不采取行动，除非滑块暂停，滑块运行时不会自动刷新。它必须像这样：暂停滑块>更改默认秒数>播放滑块>查看结果

我的目标是让它在滑块启动并运行时改变刷新率。

代码如下：

<script>
$(document).ready(function(){
    var segundos = 3000;
    var stop = true;
    var slideInterval;

	
	$('.play').click(function(){
    if (stop == false) {
    stop = true;
	$('#playpause').text('Play it');
    clearInterval(slideInterval);
    }
    else {
    stop = false;
	$('#playpause').text('Pause it');
    slideInterval = setInterval(swapSlides, segundos);
    }
    });
	
	
    function swapSlides(){
	//var cs = $('div.currentslide:first');
	var cs = $('#polaroid1').children('.currentslide:first');
	var ns = cs.next();
	if(ns.hasClass('mySlides1')){
	cs.removeClass('currentslide');
	ns.addClass('currentslide');
    }
	else{
	ns = $('#polaroid1').children('div.mySlides1:first');
	cs.removeClass('currentslide');
	ns.addClass('currentslide');
	}
	}
	
	
    $('.resta').click(function(){
    if(segundos > 1000){
    segundos = segundos - 1000;
	segundoss = (segundos/1000);
    $('.segundos').text(" " + segundoss + "s ");
    }
    });

    $('.suma').click(function(){
    if(segundos >= 1000 && segundos < 15000){
    segundos = segundos + 1000;
	segundoss = (segundos/1000);
    $('.segundos').text(" " + segundoss + "s ");
    }
    });
	
});
</script>

.menu{
	list-style:none; 
	bottom:8px; 
	position:absolute; 
	font-family: 'Covered By Your Grace', cursive; 
	font-weight:300; 
	width:200px;
}

.menu > li{
	
}

.play{
	width:59px;
	height:52px;
	position:absolute; 
	left:5px; 
	bottom:5px; 
	cursor:pointer; 
	z-index:10000;
}

.polaroid1{
	box-shadow: 10px 10px 7px -7px rgba(0, 0, 0, 0.5); 
	-webkit-backface-visibility: hidden; 
	transform: rotate(-8deg); 
	margin-bottom:30px; 
	width:380px; 
	height:320px; 
	background-color:rgba(255, 255, 255, 1.0); 
	text-align:right; 
	padding-top:10px; 
	padding-right:10px; 
	padding-left:10px; 
	padding-bottom:15px; 
	top:15px; 
	left:25px; 
	position:relative;
}

.photo1{
	width:100%;  
	height:85%; 
	position:relative;
	padding:5px;
}

.date1{
	margin:0; 
	padding-right:10px; 
	font-family: 'Covered By Your Grace', cursive; 
	transform: rotate(-5deg);
	font-size:28px;
}

.mySlides1{
	display:none;
	width:380px; 
	height:320px; 
	position:absolute; 
	top:0px; 
	left:0px;
}

.currentslide{display:block;}

<ul class="menu hide">
	<li style="font-size:22px; margin-top:8px;">Diapositivas:  <span class="resta" style="cursor:pointer;">< </span><span class="segundos">3s</span><span class="suma" style="cursor:pointer;"> ></span></li>
  </ul>
</div>
<div id="polaroid1" class="polaroid1">
  <div class="tooltip2 play" style="background-image: url('images/heart2.png');"><span id="playpause" class="tooltiptext2">Play it</span></div>
  <div class="mySlides1 fade currentslide">
    <img class="photo1" src="images/IMG-20170610-WA0028.jpg">
    <h3 class="date1">22-05-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170812_181516.jpg">
    <h3 class="date1">12-08-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170522_112958.jpg">
    <h3 class="date1">22-05-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/IMG-20170610-WA0017.jpg">
    <h3 class="date1">10-06-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170819_194526.jpg">
    <h3 class="date1">19-08-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170811_182103.jpg">
    <h3 class="date1">11-08-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170522_124602.jpg">
    <h3 class="date1">22-05-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170419_020725.jpg">
    <h3 class="date1">19-04-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170520_115819.jpg">
    <h3 class="date1">20-05-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170822_011703.jpg">
    <h3 class="date1">22-08-2017</h3>
  </div>
  <div class="mySlides1 fade">
    <img class="photo1" src="images/20170705_184344.jpg">
    <h3 class="date1">05-07-2017</h3>
  </div>
</div>

Answer 1

它必须像这样：暂停滑块>更改默认秒数>播放 滑块 > 查看结果

我的目标是让它改变刷新率，而 滑块已启动并正在运行。

那是因为当您增加/减少滑动间隔时间 (segundos) 时，您从未对您的 slideInterval 做任何事情。

解决方案：

添加功能以重新启动您的slideInterval，如下所示：

 function _restartSlide() {     
      clearInterval(slideInterval);
      slideInterval = setInterval(swapSlides, segundos);   
 } 

jsfiddle 链接https://jsfiddle.net/sudarpochong/2za1ccra/1/