jquery可任意拖动排序的导航图片效果
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<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jquery可任意拖动排序的导航图片效果</title>
<link rel="stylesheet" type="text/css" href="css/normalize.css" />
<link rel="stylesheet" type="text/css" href="css/htmleaf-demo.css">
<style type="text/css">
.item_content ul {
list-style:none;
}
.item_content ul li {
width:200px;
height:120px;
float:left;
margin:10px
}
.item_content {
width:740px;
height:460px;
margin:0 auto;
}
.item_content .item {
width:200px;
height:120px;
line-height:120px;
text-align:center;
cursor:pointer;
background:#ccc;
}
.item_content .item img {
width:200px;
height:120px;
border-radius:6px;
}
</style>
</head>
<body>
<div class="htmleaf-container">
<header class="htmleaf-header">
<h1>jquery可任意拖动排序的导航图片效果</h1>
<div class="htmleaf-links">
<a class="htmleaf-icon icon-htmleaf-home-outline" href="http://www.htmleaf.com/" title="jQuery之家" target="_blank"><span> jQuery之家</span></a>
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</div>
</header>
<div class="item_container">
<div class="item_content">
<ul>
<li>
<div class="item">
<img src="images/youku.png" />
</div>
</li>
<li>
<div class="item">
<img src="images/jd.png" />
</div>
</li>
<li>
<div class="item">
<img src="images/taobao.png" />
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<div class="item">
<img src="images/renren.png" />
</div>
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<div class="item">
<img src="images/360.png" />
</div>
</li>
<li>
<div class="item">
<img src="images/360game.png" />
</div>
</li>
</ul>
</div>
</div>
</div>
<script src="http://cdn.bootcss.com/jquery/1.11.0/jquery.min.js" type="text/javascript"></script>
<script>window.jQuery || document.write('<script src="js/jquery-1.11.0.min.js"><\/script>')</script>
<script type="text/javascript">
$(function() {
function Pointer(x, y) {
this.x = x ;
this.y = y ;
}
function Position(left, top) {
this.left = left ;
this.top = top ;
}
$(".item_content .item").easch(function(i) {
this.init = function() { // 初始化
this.box = $(this).parent() ;
$(this).attr("index", i).css({
position : "absolute",
left : this.box.offset().left,
top : this.box.offset().top
}).appendTo(".item_content") ;
this.drag() ;
},
this.move = function(callback) { // 移动
$(this).stop(true).animate({
left : this.box.offset().left,
top : this.box.offset().top
}, 500, function() {
if(callback) {
callback.call(this) ;
}
}) ;
},
this.collisionCheck = function() {
var currentItem = this ;
var direction = null ;
$(this).siblings(".item").each(function() {
if(
currentItem.pointer.x > this.box.offset().left &&
currentItem.pointer.y > this.box.offset().top &&
(currentItem.pointer.x < this.box.offset().left + this.box.width()) &&
(currentItem.pointer.y < this.box.offset().top + this.box.height())
) {
// 返回对象和方向
if(currentItem.box.offset().top < this.box.offset().top) {
direction = "down" ;
} else if(currentItem.box.offset().top > this.box.offset().top) {
direction = "up" ;
} else {
direction = "normal" ;
}
this.swap(currentItem, direction) ;
}
}) ;
},
this.swap = function(currentItem, direction) { // 交换位置
if(this.moveing) return false ;
var directions = {
normal : function() {
var saveBox = this.box ;
this.box = currentItem.box ;
currentItem.box = saveBox ;
this.move() ;
$(this).attr("index", this.box.index()) ;
$(currentItem).attr("index", currentItem.box.index()) ;
},
down : function() {
// 移到上方
var box = this.box ;
var node = this ;
var startIndex = currentItem.box.index() ;
var endIndex = node.box.index(); ;
for(var i = endIndex; i > startIndex ; i--) {
var prevNode = $(".item_content .item[index="+ (i - 1) +"]")[0] ;
node.box = prevNode.box ;
$(node).attr("index", node.box.index()) ;
node.move() ;
node = prevNode ;
}
currentItem.box = box ;
$(currentItem).attr("index", box.index()) ;
},
up : function() {
// 移到上方
var box = this.box ;
var node = this ;
var startIndex = node.box.index() ;
var endIndex = currentItem.box.index(); ;
for(var i = startIndex; i < endIndex; i++) {
var nextNode = $(".item_content .item[index="+ (i + 1) +"]")[0] ;
node.box = nextNode.box ;
$(node).attr("index", node.box.index()) ;
node.move() ;
node = nextNode ;
}
currentItem.box = box ;
$(currentItem).attr("index", box.index()) ;
}
}
directions[direction].call(this) ;
},
this.drag = function() { // 拖拽
var oldPosition = new Position() ;
var oldPointer = new Pointer() ;
var isDrag = false ;
var currentItem = null ;
$(this).mousedown(function(e) {
e.preventDefault() ;
oldPosition.left = $(this).position().left ;
oldPosition.top = $(this).position().top ;
oldPointer.x = e.clientX ;
oldPointer.y = e.clientY ;
isDrag = true ;
currentItem = this ;
}) ;
$(document).mousemove(function(e) {
var currentPointer = new Pointer(e.clientX, e.clientY) ;
if(!isDrag) return false ;
$(currentItem).css({
"opacity" : "0.8",
"z-index" : 999
}) ;
var left = currentPointer.x - oldPointer.x + oldPosition.left ;
var top = currentPointer.y - oldPointer.y + oldPosition.top ;
$(currentItem).css({
left : left,
top : top
}) ;
currentItem.pointer = currentPointer ;
// 开始交换位置
currentItem.collisionCheck() ;
}) ;
$(document).mouseup(function() {
if(!isDrag) return false ;
isDrag = false ;
currentItem.move(function() {
$(this).css({
"opacity" : "1",
"z-index" : 0
}) ;
}) ;
}) ;
}
this.init() ;
}) ;
}) ;
</script>
</body>
</html>
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