小部件（Widgets）
特效（Effects）
交互（Interactions）
实用工具（Utilities）

滑块（Slider） - 滑块滚动条

使用滑块来操作页面上内容的定位。本实例中，它是一个能获取值的滚动条。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

源代码

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI 滑块（Slider） - 滑块滚动条</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.9.1.js"></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
  <style>
  .scroll-pane { overflow: auto; width: 99%; float:left; }
  .scroll-content { width: 2440px; float: left; }
  .scroll-content-item { width: 100px; height: 100px; float: left; margin: 10px; font-size: 3em; line-height: 96px; text-align: center; }
  .scroll-bar-wrap { clear: left; padding: 0 4px 0 2px; margin: 0 -1px -1px -1px; }
  .scroll-bar-wrap .ui-slider { background: none; border:0; height: 2em; margin: 0 auto;  }
  .scroll-bar-wrap .ui-handle-helper-parent { position: relative; width: 100%; height: 100%; margin: 0 auto; }
  .scroll-bar-wrap .ui-slider-handle { top:.2em; height: 1.5em; }
  .scroll-bar-wrap .ui-slider-handle .ui-icon { margin: -8px auto 0; position: relative; top: 50%; }
  </style>
  <script>
  $(function() {
    //滚动面板部分
    var scrollPane = $( ".scroll-pane" ),
      scrollContent = $( ".scroll-content" );
 
    //创建滑块
    var scrollbar = $( ".scroll-bar" ).slider({
      slide: function( event, ui ) {
        if ( scrollContent.width() > scrollPane.width() ) {
          scrollContent.css( "margin-left", Math.round(
            ui.value / 100 * ( scrollPane.width() - scrollContent.width() )
          ) + "px" );
        } else {
          scrollContent.css( "margin-left", 0 );
        }
      }
    });
 
    //追加要处理的图标
    var handleHelper = scrollbar.find( ".ui-slider-handle" )
    .mousedown(function() {
      scrollbar.width( handleHelper.width() );
    })
    .mouseup(function() {
      scrollbar.width( "100%" );
    })
    .append( "<span class='ui-icon ui-icon-grip-dotted-vertical'></span>" )
    .wrap( "<div class='ui-handle-helper-parent'></div>" ).parent();
 
    //由于滑块手柄滚动，改变要隐藏的溢出部分
    scrollPane.css( "overflow", "hidden" );
 
    //根据要滚动距离按比例定义滚动条和手柄的尺寸
    function sizeScrollbar() {
      var remainder = scrollContent.width() - scrollPane.width();
      var proportion = remainder / scrollContent.width();
      var handleSize = scrollPane.width() - ( proportion * scrollPane.width() );
      scrollbar.find( ".ui-slider-handle" ).css({
        width: handleSize,
        "margin-left": -handleSize / 2
      });
      handleHelper.width( "" ).width( scrollbar.width() - handleSize );
    }
 
    //基于滚动内容位置，重置滑块的值
    function resetValue() {
      var remainder = scrollPane.width() - scrollContent.width();
      var leftVal = scrollContent.css( "margin-left" ) === "auto" ? 0 :
        parseInt( scrollContent.css( "margin-left" ) );
      var percentage = Math.round( leftVal / remainder * 100 );
      scrollbar.slider( "value", percentage );
    }
 
    //如果滑块是 100%，且窗口变大，则显示内容
    function reflowContent() {
        var showing = scrollContent.width() + parseInt( scrollContent.css( "margin-left" ), 10 );
        var gap = scrollPane.width() - showing;
        if ( gap > 0 ) {
          scrollContent.css( "margin-left", parseInt( scrollContent.css( "margin-left" ), 10 ) + gap );
        }
    }
 
    //当缩放窗口时改变手柄的位置
    $( window ).resize(function() {
      resetValue();
      sizeScrollbar();
      reflowContent();
    });
    //初始化滚动条大小
    setTimeout( sizeScrollbar, 10 );//safari 超时
  });
  </script>
</head>
<body>
 
<div class="scroll-pane ui-widget ui-widget-header ui-corner-all">
  <div class="scroll-content">
    <div class="scroll-content-item ui-widget-header">1</div>
    <div class="scroll-content-item ui-widget-header">2</div>
    <div class="scroll-content-item ui-widget-header">3</div>
    <div class="scroll-content-item ui-widget-header">4</div>
    <div class="scroll-content-item ui-widget-header">5</div>
    <div class="scroll-content-item ui-widget-header">6</div>
    <div class="scroll-content-item ui-widget-header">7</div>
    <div class="scroll-content-item ui-widget-header">8</div>
    <div class="scroll-content-item ui-widget-header">9</div>
    <div class="scroll-content-item ui-widget-header">10</div>
    <div class="scroll-content-item ui-widget-header">11</div>
    <div class="scroll-content-item ui-widget-header">12</div>
    <div class="scroll-content-item ui-widget-header">13</div>
    <div class="scroll-content-item ui-widget-header">14</div>
    <div class="scroll-content-item ui-widget-header">15</div>
    <div class="scroll-content-item ui-widget-header">16</div>
    <div class="scroll-content-item ui-widget-header">17</div>
    <div class="scroll-content-item ui-widget-header">18</div>
    <div class="scroll-content-item ui-widget-header">19</div>
    <div class="scroll-content-item ui-widget-header">20</div>
  </div>
  <div class="scroll-bar-wrap ui-widget-content ui-corner-bottom">
    <div class="scroll-bar"></div>
  </div>
</div>
 
 
</body>
</html>