//对li执行的拖拽

(function( $ ){
/*
* DDSort: drag and drop sorting.
* @param {Object} options
* target[string]: 可选，jQuery事件委托选择器字符串，默认'li'
* cloneStyle[object]: 可选，设置占位符元素的样式
* floatStyle[object]: 可选，设置拖动元素的样式
* down[function]: 可选，鼠标按下时执行的函数
* move[function]: 可选，鼠标移动时执行的函数
* up[function]: 可选，鼠标抬起时执行的函数
*/
$.fn.DDSort = function( options ){
var $doc = $( document ),
fnEmpty = function(){},

settings = $.extend( true, {

down: fnEmpty,
move: fnEmpty,
up: fnEmpty,

target: 'li',
cloneStyle: {
'background-color': '#eee'
},
floatStyle: {
//用固定定位可以防止定位父级不是Body的情况的兼容处理，表示不兼容IE6，无妨
'position': 'fixed',
'box-shadow': '10px 10px 20px 0 #eee'
}
}, options );

return this.each(function(){
var that = $( this ),//options
height = 'height',
width = 'width';

if( that.css( 'box-sizing' ) == 'border-box' ){
height = 'outerHeight';
width = 'outerWidth';
}

that.on( 'mousedown.DDSort', settings.target, function( e ){
//只允许鼠标左键拖动
if( e.which != 1 ){
return;
}

//防止表单元素失效
var tagName = e.target.tagName.toLowerCase();
if( tagName == 'input' || tagName == 'textarea' || tagName == 'select' ){
return;
}

var THIS = this,
$this = $( THIS ),
offset = $this.offset(),
disX = e.pageX - offset.left,
disY = e.pageY - offset.top,

clone = $this.clone()
.css( settings.cloneStyle )
.css( 'height', $this[ height ]() )
.empty(),

hasClone = 1,

//缓存计算
thisOuterHeight = $this.outerHeight(),
thatOuterHeight = that.outerHeight(),

//滚动速度
upSpeed = thisOuterHeight,
downSpeed = thisOuterHeight,
maxSpeed = thisOuterHeight * 3;

settings.down.call( THIS );

$doc.on( 'mousemove.DDSort', function( e ){
if( hasClone ){
$this.before( clone )
.css( 'width', $this[ width ]() )
.css( settings.floatStyle )
.appendTo( $this.parent() );

hasClone = 0;
}

var left = e.pageX - disX,
top = e.pageY - disY,

prev = clone.prev(),
next = clone.next().not( $this );

$this.css({
left: left,
top: top
});

//向上排序
if( prev.length && top < prev.offset().top + prev.outerHeight()/2 ){

clone.after( prev );

//向下排序
}else if( next.length && top + thisOuterHeight > next.offset().top + next.outerHeight()/2 ){

clone.before( next );

}

/**
* 处理滚动条
* that是带着滚动条的元素，这里默认以为that元素是这样的元素（正常情况就是这样），如果使用者事件委托的元素不是这样的元素，那么需要提供接口出来
*/
var thatScrollTop = that.scrollTop(),
thatOffsetTop = that.offset().top,
scrollVal;

//向上滚动
if( top < thatOffsetTop ){

downSpeed = thisOuterHeight;
upSpeed = ++upSpeed > maxSpeed ? maxSpeed : upSpeed;
scrollVal = thatScrollTop - upSpeed;

//向下滚动
}else if( top + thisOuterHeight - thatOffsetTop > thatOuterHeight ){

upSpeed = thisOuterHeight;
downSpeed = ++downSpeed > maxSpeed ? maxSpeed : downSpeed;
scrollVal = thatScrollTop + downSpeed;
}

that.scrollTop( scrollVal );

settings.move.call( THIS );

})
.on( 'mouseup.DDSort', function(){
$doc.off( 'mousemove.DDSort mouseup.DDSort' );

//click的时候也会触发mouseup事件，加上判断阻止这种情况
if( !hasClone ){
clone.before( $this.removeAttr( 'style' ) ).remove();
settings.up.call( THIS );
}
});

return false;
});
});
};

})( jQuery );

//这是对li执行的点击事件

$(document).on('click','#result-tree ul li',function(e){
emptyCondition();
e.stopPropagation();
$('#gird-Product_1').addClass('in active').removeClass('fade');
$('#gird-Product').removeClass('active');
$('#gird-Product_1').find('.btn_div').css('display','none');
isHide = false;
fundIDs = [];
group_id = $(this).attr('data-id');
group_name = $(this).children('name').text();
newtabGetConcernedProducts=newtab().getRank;
$(this).children('.name').addClass('fontColor');
$('#result-tree ul li').not(this).children('.name').removeClass('fontColor');
$('.defaultLi').find('li').children('.name').removeClass('fontColor');
});

代码可能有点长，解释一下，第一部分是对li执行的拖拽封装的一个方法，第二部分就是对li执行的一个点击事件