jquery的draggable移动

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’

});