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家伙！  我有一个简单的js简单滑块的问题。它适用于左侧位置： - = 999px;  我的js更改类的按钮使其无效，但按钮仍然有效。  我想念的地方？我需要禁用单击按钮。

$(function(){   
var slideWidth = $('#slider ul li').width();
$('a.control_next').click(function() {
  
  $('ol > li:first-child > a').removeClass('active');
  $('ol > li:last-child > a').removeClass('control_next');
  $('ol > li:first-child > a').addClass('control_prev');
  $('ol > li:last-child > a').addClass('active');
 
  $('#anim').animate({
    
    left: "-=920",
    
  }, 500, function() {
});
});

$('a.control_prev').click(function() {
  $('ol > li:last-child > a').removeClass('active');
  $('ol > li:last-child > a').addClass('control_next');
  $('ol > li:first-child > a').addClass('active');
  $('ol > li:first-child > a').removeClass('control_prev');

  $('#anim').animate({
    
    left: "+=920",
    
  }, 500, function() {
})
 
});

});

#slider {
	overflow: hidden;
	padding-left: 0;
	padding-right: 0;
}
#slider ul {
  position: absolute;
  overflow: hidden;
  width: 1000%;
  margin: 0;
  padding: 0;
  height: 200px;
  list-style: none;
}
#slider ul li {
	float: left;
	width: 920px;
	
}
ol{
	margin: 200px auto 0 auto;
	padding: 30px 20px;
	list-style: none;
	bottom: 0px;
	text-align: center;
}
ol > li {
	margin: 0 6px;
	display: inline-block;
}
ol > li > a{
	width: 11px;
	height: 11px;
	display: block;
	background: #f7f7f7;
	cursor: pointer;
	border-radius: 20px;
	box-shadow: inset 0 0 3px #a9afb3;
}
ol > li > a:hover:not(.active) {
	background: #333;
	-webkit-transition: all 250ms ease-out;
	-moz-transition: all 250ms ease-out;
	-o-transition: all 250ms ease-out;
	transition: all 250ms ease-out;
}
ol > li > a.active{
	background: #a9afb3;
	cursor: default;
	-webkit-transition: all 250ms ease-out;
	-moz-transition: all 250ms ease-out;
	-o-transition: all 250ms ease-out;
	transition: all 250ms ease-out;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="slider" class="block">
			<ul id="anim">
				<li><h2 class="twitter">AOS New York @aod</h2>
			<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Fugit, sint! Accusamus rem molestias facilis, aliquid. Eum facere adipisci, minus ullam, quis quam eaque quia at recusandae vel veniam sint, veritatis.</p></li>
				<li><h2 class="twitter">AOS New York @aod</h2>
			<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Fugit, sint! Accusamus rem molestias facilis, aliquid. Eum facere adipisci, minus ullam, quis quam eaque quia at recusandae vel veniam sint, veritatis.</p></li>
				
			</ul>
			<ol>
				<li><a class="control_prev active">&nbsp;</a></li>
				<li><a class="control_next">&nbsp;</a></li>
			</ol>
			
		</div>

Answer 1

尝试使用标志并在每个相应的处理程序中设置它们，如

$(function() {
  var slideWidth = $('#slider ul li').width();
  var next = true;
  var prev = false;
  $('a.control_next').click(function() {
    if (next) {
      $('ol > li:first-child > a').removeClass('active');
      $('ol > li:last-child > a').removeClass('control_next');
      $('ol > li:first-child > a').addClass('control_prev');
      $('ol > li:last-child > a').addClass('active');

      $('#anim').animate({

        left: "-=920",

      }, 500, function() {});
      next = false;
      prev = true;
    }

  });

  $('a.control_prev').click(function() {
    if (prev) {
      $('ol > li:last-child > a').removeClass('active');
      $('ol > li:last-child > a').addClass('control_next');
      $('ol > li:first-child > a').addClass('active');
      $('ol > li:first-child > a').removeClass('control_prev');

      $('#anim').animate({

        left: "+=920",

      }, 500, function() {})

    }
    next = true;
    prev = false;
  });

});

#slider {
  overflow: hidden;
  padding-left: 0;
  padding-right: 0;
}
#slider ul {
  position: absolute;
  overflow: hidden;
  width: 1000%;
  margin: 0;
  padding: 0;
  height: 200px;
  list-style: none;
}
#slider ul li {
  float: left;
  width: 920px;
}
ol {
  margin: 200px auto 0 auto;
  padding: 30px 20px;
  list-style: none;
  bottom: 0px;
  text-align: center;
}
ol > li {
  margin: 0 6px;
  display: inline-block;
}
ol > li > a {
  width: 11px;
  height: 11px;
  display: block;
  background: #f7f7f7;
  cursor: pointer;
  border-radius: 20px;
  box-shadow: inset 0 0 3px #a9afb3;
}
ol > li > a:hover:not(.active) {
  background: #333;
  -webkit-transition: all 250ms ease-out;
  -moz-transition: all 250ms ease-out;
  -o-transition: all 250ms ease-out;
  transition: all 250ms ease-out;
}
ol > li > a.active {
  background: #a9afb3;
  cursor: default;
  -webkit-transition: all 250ms ease-out;
  -moz-transition: all 250ms ease-out;
  -o-transition: all 250ms ease-out;
  transition: all 250ms ease-out;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="slider" class="block">
  <ul id="anim">
    <li>
      <h2 class="twitter">AOS New York @aod</h2>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Fugit, sint! Accusamus rem molestias facilis, aliquid. Eum facere adipisci, minus ullam, quis quam eaque quia at recusandae vel veniam sint, veritatis.</p>
    </li>
    <li>
      <h2 class="twitter">AOS New York @aod</h2>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Fugit, sint! Accusamus rem molestias facilis, aliquid. Eum facere adipisci, minus ullam, quis quam eaque quia at recusandae vel veniam sint, veritatis.</p>
    </li>

  </ul>
  <ol>
    <li><a class="control_prev active">&nbsp;</a>
    </li>
    <li><a class="control_next">&nbsp;</a>
    </li>
  </ol>

</div>