使用 jquery 切换 div 的高度

Question

我想要一个显示“显示更多”的链接，单击该链接会扩展另一个 div 的高度以显示所有内容。一旦 div 显示所有内容，我希望链接更改为“显示更少”，并在被点击后执行相反的操作。

这是我目前所拥有的，但由于某种原因它不起作用，请有人帮忙吗？

这是我目前所拥有的：

$(document).ready(function() {
  $('.entry-content').css('height', '400px');
  $('.entry-content').css('overflow', 'hidden');
 $('.show-more').click(function() {
  $('.entry-content').animate({
    'height': 'auto'
  }, 500);
  $('.show_more').html('Show Less');
  $('.show_more').addClass('show_less');
  $('.show_more').removeClass('show_more');
});
$('.show-less').click(function() {
  $('.entry-content').animate({
    'height': '400px'
  }, 500);
  $('.show_less').html('Show More');
  $('.show_less').addClass('show_more');
  $('.show_less').removeClass('show_less');
});
});

   

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="entry-content">
  Curabitur sed enim sit amet nibh vulputate efficitur nec eget nulla. Vestibulum vel pulvinar magna. Etiam viverra vulputate lectus. Etiam dictum maximus ligula sed efficitur. Donec in dictum purus. Sed consequat quam eu eleifend convallis. Donec sapien
  augue, volutpat ac nibh ac, molestie vulputate neque. Morbi eu fermentum est, eget vulputate quam. Phasellus et ante ipsum. Nullam tempus neque augue, nec accumsan erat hendrerit vel. Proin dolor sapien, pulvinar at rutrum quis, scelerisque vel ipsum.
  Cras arcu nulla, placerat ac arcu vitae, iaculis maximus nisi. Nulla tincidunt, nisi id ultrices tempor, diam ipsum sollicitudin neque, ac consequat libero nulla eu diam.
</div>

<div class="another-div-elsewhere">
  <a href="#" class="show-more">Show More</a>
</div>

Answer 1

试试下面的sn-p。

$(document).ready(function() {
  $('.entry-content').css({'height':'40px','overflow': 'hidden'});


  $('.show-more').on('click',function() {
    if($(this).hasClass('less')){
      $('.entry-content').animate({
      'height': '40px'
      }, 500);
      $(this).html("Show More")
    }
    else{
       $('.entry-content').animate({
      'height': $(".entry-content").get(0).scrollHeight
      }, 500);
      $(this).html("Show Less")
    }
    $(this).toggleClass('less');
  });

});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="entry-content">
  Curabitur sed enim sit amet nibh vulputate efficitur nec eget nulla. Vestibulum vel pulvinar magna. Etiam viverra vulputate lectus. Etiam dictum maximus ligula sed efficitur. Donec in dictum purus. Sed consequat quam eu eleifend convallis. Donec sapien
  augue, volutpat ac nibh ac, molestie vulputate neque. Morbi eu fermentum est, eget vulputate quam. Phasellus et ante ipsum. Nullam tempus neque augue, nec accumsan erat hendrerit vel. Proin dolor sapien, pulvinar at rutrum quis, scelerisque vel ipsum.
  Cras arcu nulla, placerat ac arcu vitae, iaculis maximus nisi. Nulla tincidunt, nisi id ultrices tempor, diam ipsum sollicitudin neque, ac consequat libero nulla eu diam.
</div>

<div class="another-div-elsewhere">
  <a href="#" class="show-more">Show More</a>
</div>

Answer 2

你可以这样做。

$(document).ready(function(){
    $('.read-more').on('click', function(e){
      e.preventDefault();
      $('.details').show();
      $('.summary').hide();
    })
    $('.read-less').on('click', function(e){
      e.preventDefault();
      $('.summary').show();
      $('.details').hide();
    });
});

.details {
  display: none;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<div class="summary">
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s...</p>
  <span class="read-more">
   <a href="#">Show More....</a>
  </span>
</div>
<div class="details">
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <span class="read-less">
   <a href="#">Show Less....</a>
  </span>
</div>

Answer 3

主要问题似乎是您在 ID #show-more 和 #show-less 上附加了 $.click() 事件，但您从未创建 #show-less...您切换类 .show_more 和 .show_less。我只是单独留下了 $.click() 选择器，并正在切换一个类 .open 以确定链接/文本的状态，并根据它更新链接文本和文本高度。

您可以链接/组合许多这些命令，并使用变量来节省 jquery 的一些工作，而不必重新运行选择器。

我还将静态400px 高度更改为.entry-content 区域高度的一半，因为400px 在此演示中不起作用。你可以将staticHeight改回400px，如果它适合你，或者修改我以前的内容以满足你的需要。

var $content = $('.entry-content'),
    contentHeight = $content.outerHeight(),
    $showMore = $('#show-more'),
    staticHeight = contentHeight / 2;

$content.attr('data-height',contentHeight).css({
  'height': staticHeight,
  'overflow':'hidden'
});

$showMore.on('click',function() {
  var height, text;
  if ($showMore.hasClass('open')) {
    $showMore.removeClass('open');
    height = staticHeight;
    text = 'Show More';
  } else {
    $showMore.addClass('open');
    height = contentHeight;
    text = 'Show Less';
  }
  $content.animate({
    'height': height
  }, 500);
  $showMore.html(text);
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="entry-content">
Curabitur sed enim sit amet nibh vulputate efficitur nec eget nulla. Vestibulum vel pulvinar magna. Etiam viverra vulputate lectus. Etiam dictum maximus ligula sed efficitur. Donec in dictum purus. Sed consequat quam eu eleifend convallis. Donec sapien augue, volutpat ac nibh ac, molestie vulputate neque. Morbi eu fermentum est, eget vulputate quam. Phasellus et ante ipsum. Nullam tempus neque augue, nec accumsan erat hendrerit vel. Proin dolor sapien, pulvinar at rutrum quis, scelerisque vel ipsum. Cras arcu nulla, placerat ac arcu vitae, iaculis maximus nisi. Nulla tincidunt, nisi id ultrices tempor, diam ipsum sollicitudin neque, ac consequat libero nulla eu diam.
</div>

<div class="another-div-elsewhere">
<a href="#" id="show-more">Show More</a>
</div>

Answer 4

首先你在类/id 使用方面遇到了一些问题

另一件事是自动高度动画不是possible！还有其他（如 CSS）方法可以做到这一点，但这里是您尝试做的工作示例。我希望它有所帮助:-)

$(document).ready(function() {
  $('.entry-content').css('height', '100px');
  $('.entry-content').css('overflow', 'hidden');
});

$('#show_more').click(function() {
  if($(this).hasClass('show_more')){
       $(this).html('Show Less');
       $('.entry-content').animate({
          'height': '200px'
       }, 500);
  }
  else{
      $(this).html('Show More');
      $('.entry-content').animate({
          'height': '100px'
      }, 500);
  }

  $(this).toggleClass('show_less');
  $(this).toggleClass('show_more');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="entry-content">
  Curabitur sed enim sit amet nibh vulputate efficitur nec eget nulla. Vestibulum vel pulvinar magna. Etiam viverra vulputate lectus. Etiam dictum maximus ligula sed efficitur. Donec in dictum purus. Sed consequat quam eu eleifend convallis. Donec sapien
  augue, volutpat ac nibh ac, molestie vulputate neque. Morbi eu fermentum est, eget vulputate quam. Phasellus et ante ipsum. Nullam tempus neque augue, nec accumsan erat hendrerit vel. Proin dolor sapien, pulvinar at rutrum quis, scelerisque vel ipsum.
  Cras arcu nulla, placerat ac arcu vitae, iaculis maximus nisi. Nulla tincidunt, nisi id ultrices tempor, diam ipsum sollicitudin neque, ac consequat libero nulla eu diam.
  Cras arcu nulla, placerat ac arcu vitae, iaculis maximus nisi. Nulla tincidunt, nisi id ultrices tempor, diam ipsum sollicitudin neque, ac consequat libero nulla eu diam.
   Cras arcu nulla, placerat ac arcu vitae, iaculis maximus nisi. Nulla tincidunt, nisi id ultrices tempor, diam ipsum sollicitudin neque, ac consequat libero nulla eu diam.
 Curabitur sed enim sit amet nibh vulputate efficitur nec eget nulla. Vestibulum vel pulvinar magna. Etiam viverra vulputate lectus. Etiam dictum maximus ligula sed efficitur. Donec in dictum purus. Sed consequat quam eu eleifend convallis. Donec sapien
  augue, volutpat ac nibh ac, molestie vulputate neque. Morbi eu fermentum est, eget vulputate quam. Phasellus et ante ipsum. Nullam tempus neque augue, nec accumsan erat hendrerit vel. Proin dolor sapien, pulvinar at rutrum quis, scelerisque vel ipsum.
</div>

<div class="another-div-elsewhere">
  <a href="#" id="show_more" class="show_more">Show More</a>
</div>