我正在使用 jQuery UI 的滑块滚动条，我想在页面加载时定位它。我正在使用 example 中的示例代码，但我以前从未使用过 jQuery UI，所以我不知道我需要更改什么。滑块的位置应该低于某个值（例如 20 个值）并且该值应该是可见的。
怎么做？
问问题
3633 次
2 回答
3
只需指定value初始化滑块的时间：
HTML：
<div id="slider"></div>
Javascript：
$(function()
{
$( "#slider" ).slider(
{
min : 0,
max: 10,
value : 5
});
});
更新
JS：
$(function()
{
//scrollpane parts
var scrollPane = $( ".scroll-pane" ),
scrollContent = $( ".scroll-content" );
//build slider
var initialValue = 75; // 0 - 99
var scrollbar = $( ".scroll-bar" ).slider(
{
value : initialValue,
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 );
}
}
});
// Update offset position based on initialValue
scrollContent.css( "margin-left", Math.round(
initialValue / 100 * ( scrollPane.width() - scrollContent.width() )
) + "px" );
//append icon to handle
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();
//change overflow to hidden now that slider handles the scrolling
scrollPane.css( "overflow", "hidden" );
//size scrollbar and handle proportionally to scroll distance
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 );
}
//reset slider value based on scroll content position
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 );
}
//if the slider is 100% and window gets larger, reveal content
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 );
}
}
//change handle position on window resize
$( window ).resize(function()
{
resetValue();
sizeScrollbar();
reflowContent();
});
//init scrollbar size
setTimeout( sizeScrollbar, 10 );//safari wants a timeout
});
CSS：
.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%; }
HTML：
<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>
于 2013-07-29T14:10:41.137 回答
0
只需在 HTML 中添加任意数量的元素并在 CSS 中调整滑块的宽度。
在此示例中，您会看到包含 20 个项目的原始滑块：http: //jsfiddle.net/fN2v5/1/
在这个例子中，我取出了 10 个项目：http: //jsfiddle.net/fN2v5/2/
我将前一个宽度除以 2，得到 10 个项目的 1220 像素。
.scroll-content { width: 1220px; float: left; }
在 HTML 中，我只使用了前 20 个元素中的 10 个。
<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>
于 2013-07-29T14:20:19.347 回答