引用：http://blog.sina.com.cn/s/blog_48474ade0100exfg.html
appendTo: 设置追加到什么地方
axis: 设置拖动的方向
cancel, handle: 设置控制整个控件拖动动作的区域, cancel指定区域不能拖动, handle指定区域控制控件拖动.
connectToSortable: 需要和sortable集成.
containment: 设置控件可拖动范围
cursor, cursorAt: 设置拖动过程中, 鼠标的样式及相对空间自身的位置.
delay, distance: 设置拖动的延迟, delay设置延迟时间, distance设置延迟距离, 目的是防止误点击带来的不期望拖动.
grid: 设置拖动过程移动的单位(以小格的方式移动)
helper: 设置拖动过程中, 跟随鼠标移动的组件.
iframeFix: 解决拖动过程中与iframe层叠后的事件问题.
opacity: 拖动过程helper的不透明度.
refreshPositions: 设置后drop过程中, 鼠标每次移动都会计算位置.
revert, revertDuration: 设置撤销移动相关.
scope: 设定draggable的域, 用来和droppable结合使用时确定可放入的目标.
scroll, scrollSensitivity, scrollSpeed: 设置拖动过程中带来的滚动条相关问题.
snap, snapMode, snapTolerance: 设置吸附的相关属性.
stack, zIndex: 设置控件的层次.
默认设置值：
$.extend($.ui.draggable, {
version: “1.7.1″,
eventPrefix: “drag”,
defaults: {
addClasses: true,
appendTo: “parent”,
axis: false,
cancel: “:input,option”,
connectToSortable: false,
containment: false,
cursor: “auto”,
cursorAt: false,
delay: 0,
distance: 1,
grid: false,
handle: false,
helper: “original”,
iframeFix: false,
opacity: false,
refreshPositions: false,
revert: false,
revertDuration: 500,
scope: “default”,
scroll: true,
scrollSensitivity: 20,
scrollSpeed: 20,
snap: false,
snapMode: “both”,
snapTolerance: 20,
stack: false,
zIndex: false
}
});
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Default：
$(”#draggable”).draggable();
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events：
var $start_counter = $(’#event-start’), $drag_counter = $(’#event-drag’), $stop_counter = $(’#event-stop’);
var counts = [0,0,0];
$(”#draggable”).draggable({
start: function() {
counts[0]++;
updateCounterStatus($start_counter,counts[0]);
},
drag: function() {
counts[1]++;
updateCounterStatus($drag_counter,counts[1]);
},
stop: function() {
counts[2]++;
updateCounterStatus($stop_counter,counts[2]);
}
});
});
function updateCounterStatus($event_counter,new_count) {
// first update the status visually…
if (!$event_counter.hasClass(’ui-state-hover’)) {
$event_counter.addClass(’ui-state-hover’)
.siblings().removeClass(’ui-state-hover’);
}
来源：(http://blog.sina.com.cn/s/blog_48474ade0100exfg.html) - jQuery-Draggable参数介绍_江南梦_新浪博客
// …then update the numbers
$(’span.count’,$event_counter).text(new_count);
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constrain-movement(限制范围移动)：
$(”#draggable”).draggable({ axis: ‘y’ }); //限制y轴
$(”#draggable2″).draggable({ axis: ‘x’ }); //限制x轴
$(”#draggable3″).draggable({ containment: ‘#containment-wrapper’, scroll: false }); //不出现滚动条
$(”#draggable4″).draggable({ containment: ‘#demo-frame’ });
$(”#draggable5″).draggable({ containment: ‘parent’ }); //限制在父系框架中
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delay-start(延时移动)：
$(”#draggable”).draggable({ distance: 20 }); //移动20像素开始拖动
$(”#draggable2″).draggable({ delay: 1000 });//延迟1秒后开始拖动
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snap-to (吸附移动)：
$(”#draggable”).draggable({ snap: true }); //默认，任何方式吸附
$(”#draggable2″).draggable({ snap: ‘.ui-widget-header’ }); //以某元素的内外径吸附
$(”#draggable3″).draggable({ snap: ‘.ui-widget-header’, snapMode: ‘outer’ }); //以某元素外径吸附,吸附方式:本上吸其下，本下吸其上. 内径吸附：inner, 吸附方式:相反
$(”#draggable4″).draggable({ grid: [20,20] });//以一定距离移动
$(”#draggable5″).draggable({ grid: [80, 80] });
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scroll：
$(”#draggable”).draggable({ scroll: true });
$(”#draggable2″).draggable({ scroll: true, scrollSensitivity: 100 }); //滚动条敏感度
$(”#draggable3″).draggable({ scroll: true, scrollSpeed: 100 }); //滚动速度
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revert position(恢复到原始位置)：
$(”#draggable”).draggable({ revert: true }); //revert:true 设置为恢复到位置
$(”#draggable2″).draggable({ revert: true, helper: ‘clone’ }); //helper:’clone’ 复制拖动
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visualfeedback (视觉效果)：
$(”#draggable”).draggable({ helper: ‘original’ }); //设置不复制(初始化设置)
$(”#draggable2″).draggable({ opacity: 0.7, helper: ‘clone’ }); //opacity设置透明度,并克隆元素
$(”#draggable3″).draggable({
cursor: ‘move’, //设置鼠标图形
cursorAt: { top: -12, left: -20 }, //位置定位坐标设置
helper: function(event) {
return $(’<div class=”ui-widget-header”>I\’m a custom helper</div>’);
} //新建提示元素,上面设置其以鼠标定位位置值
});
$(”#set div”).draggable({ stack: { group: ‘#set div’, min: -1 } });//群组设置拖动,并且最后添加的元素叠加到该群组的最上面.适合做许愿板效果。
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Drag handle (拖动点设置)：
$(”#draggable”).draggable({ handle: ‘p’ }); //handle设置实现拖动位置
$(”#draggable2″).draggable({ cancel: “p.ui-widget-header” }); //cancel设置限制拖动位置
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Cursor style (鼠标样式)：
$(”#draggable”).draggable({ cursorAt: { cursor: ‘move’, top: 56, left: 56 } }); //cursor设置鼠标样式, top、left、right、bottom设置元素相对鼠标的定位点
$(”#draggable2″).draggable({ cursorAt: { cursor: ‘crosshair’, top: -5, left: -5 } });
$(”#draggable3″).draggable({ cursorAt: { bottom: 0 } });
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Cursor style (鼠标样式)：
$(”#draggable”).draggable({ cursorAt: { cursor: ‘move’, top: 56, left: 56 } }); //cursor设置鼠标样式, top、left、right、bottom设置元素相对鼠标的定位点
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Draggable+sortable：
$(”#sortable”).sortable({
revert: true
});
$(”#draggable”).draggable({
connectToSortable: ‘#sortable’, //设置拖动加入到其他列表中
helper: ‘clone’,
revert: ‘invalid’
});