原文地址http://blog.csdn.net/pvfhv/article/details/3449803/#
源码：
(function($) {
var old = $.fn.swipe;
$.fn.swipe = function(option) {
var opt = {
'left': $.noop,
'right': $.noop,
'up': $.noop,
'down': $.noop
};
if ($.type(option) == 'string') {
switch (option.toLowerCase()) {
case 'left':
if (this.data('opt').left && $.isFunction(this.data('opt').left)) {
this.data('opt').left.call(this);
}
break;
case 'right':
if (this.data('opt').right && $.isFunction(this.data('opt').right)) {
this.data('opt').right.call(this);
}
break;
case 'up':
if (this.data('opt').up && $.isFunction(this.data('opt').up)) {
this.data('opt').up.call(this);
}
break;
case 'down':
if (this.data('opt').down && $.isFunction(this.data('opt').down)) {
this.data('opt').down.call(this);
}
break;
default:
break;
}
return this;
} else if ($.isPlainObject(option)) {
var clone = {};
//大小写不敏感处理
$.each(option, function(k, v) {
clone[k.toLowerCase()] = v;
});
$.extend(opt, clone);
return this.each(function(index, ele) {
//敏感距离
var dis = 120;
//各元素赋值，备直接触发时用
$(ele).data('opt', $.extend({}, opt)).on('touchstart mousedown',function(e){
var ev=e.type=='touchstart'?e.originalEvent.touches[0]:e,
startX = ev.pageX,
startY = ev.pageY,
startLeft = $(this).position().left,
startTop = $(this).position().top,
start = {
left: startLeft,
top: startTop
},
disX = startX - startLeft,
disY = startY - startTop;
$(document).on('touchmove.swipe.founder mousemove.swipe.founder',function(e){
var ev=e.type=='touchmove'?e.originalEvent.touches[0]:e;
if (opt.left != $.noop || opt.right != $.noop) {
$(ele).css('left', ev.pageX - disX - $(ele).offsetParent().offset().left + 'px');
}
if (opt.up != $.noop || opt.down != $.noop) {
$(ele).css('top', ev.pageY - disY - $(ele).offsetParent().offset().top + 'px');
}
e.preventDefault();
});
$(document).on('touchend.swipe.founder mouseup.swipe.founder',function(e){
var ev=e.type=='touchend'?e.originalEvent.changedTouches[0]:e,
endX = ev.pageX,
endY = ev.pageY,
x = Math.abs(endX - startX),
y = Math.abs(endY - startY),
direction = null;
//必须在指定dis大小外，消除敏感距离
direction = x >= y ? (endX < startX ? (Math.abs(endX - startX) > dis ? 'left' : null) : (Math.abs(endX - startX) > dis ? 'right' : null)) : (endY < startY ? (Math.abs(endY - startY) > dis ? 'up' : null) : (Math.abs(endY - startY) > dis ? 'down' : null));
switch (direction) {
case 'left':
if (opt.left && $.isFunction(opt.left)) {
opt.left.call(ele);
}
break;
case 'right':
if (opt.right && $.isFunction(opt.right)) {
opt.right.call(ele);
}
break;
case 'up':
if (opt.up && $.isFunction(opt.up)) {
opt.up.call(ele);
}
break;
case 'down':
if (opt.down && $.isFunction(opt.down)) {
opt.down.call(ele);
}
break;
default:
//复位
$(ele).animate({
'left': start.left + 'px',
'top': start.top + 'px'
});
break;
}
$(document).off('.swipe.founder');
});
});
});
} else {
throw new Error('%E5%8F%82%E6%95%B0%E9%94%99%E8%AF%AF！');
}
};
$.fn.swipe.noConflict = function() {
$.fn.swipe = old;
return this;
};
})(jQuery);
案例：
<!DOCTYPE html>
<html> <head>
<meta charset="utf-8">
<title>手势+鼠标</title>
<style type="text/css">
#div1 {
text-align: center;
width: 100px;
height: 100px;
line-height: 100px;
background: yellow;
position: absolute;
left: 50%;
top: 50%;
}
</style>
</head> <body>
<div id="div1"></div>
<script src="../js/jquery-2.1.1.js" type="text/javascript" charset="utf-8"></script>
<script src="jquery.swipe.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
$('#div1').swipe({
left: function(){
$(this).text('向左运动');
},
right: function(){
$(this).text('向右运动');
},
up: function(){
$(this).text('向上运动');
},
down: function(){
$(this).text('向下运动');
}
});
</script>
</body> </html>