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banner.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{padding: 0;margin: 0;}
.banner{position: relative; background: #ccc;width: 1000px;height: 500px;margin: 0 auto;}
.banner .item{width: 800px;height: 400px;position: absolute;left: 100px;top: 50px;-webkit-transition: all .5s;
-o-transition: all .5s;
transition: all .5s;
-webkit-transform: scale(0);
-ms-transform: scale(0);
-o-transform: scale(0);
transform: scale(0);}
.banner .prev,.banner .next{cursor: pointer;position: absolute;z-index: 10;top: 50%;margin-top: -30px;color:#fff;background: #f66;width: 40px;height: 60px;text-align: center;line-height: 60px;font-size: 30px;}
.banner .prev{left: 0;}
.banner .next{right: 0;}
</style>
</head>
<body>
<div class="banner">
<span class="prev">←</span><span class="next">→</span>
<div class="item"><img src="images/r-01.jpg" width="100%" height="100%" alt=""></div>
<div class="item"><img src="images/r-02.jpg" width="100%" height="100%" alt=""></div>
<div class="item"><img src="images/r-03.jpg" width="100%" height="100%" alt=""></div>
<div class="item"><img src="images/r-04.jpg" width="100%" height="100%" alt=""></div>
</div>
<script src="js/jquery-1.11.2.min.js"></script>
<script>
var banner = {
dom:function(){
var _this = this;
_this.container = $('.banner');
_this.items = _this.container.find('.item');
var _length = _this.items.length;
var _containerW = _this.container.width();
var _containerH = _this.container.height();
var _currentW = _containerW * 0.8;
var _currentH = _containerH * 0.8;
if(_length<3){
alert('至少需要3张图')
return;
}
_this.index = 0;
_this.current = _this.items.first();
_this.next = _this.items.eq(1);
_this.last = _this.items.last();
_this.items.css({
left:(_containerW - _currentW ) / 2,
top:(_containerH - _currentH) /2,
zIndex:1,
transform:'scale(0.6)',
opacity:'.6'
})
_this.current.css({
left:(_containerW - _currentW ) / 2,
top:(_containerH - _currentH) /2,
zIndex:4,
transform:'scale(1)',
opacity:'1'
})
_this.next.css({
left:_containerW - _currentW + 60,
top:(_containerH - _currentH) /2,
zIndex:3,
transform:'scale(0.8)',
opacity:'.6'
})
_this.last.css({
left:0 - 60,
top:(_containerH - _currentH) /2,
zIndex:2,
transform:'scale(0.8)',
opacity:'.6'
})
},
change:function(param){
var _this = this;
var _length = _this.items.length;
var _containerW = _this.container.width();
var _containerH = _this.container.height();
var _currentW = _containerW * 0.8;
var _currentH = _containerH * 0.8;
if(_this.container.hasClass('ani')) return ;
_this.container.addClass('ani');
if(param) {
_this.index ++ ;
}else{
_this.index --;
};
var _cIndex = _this.index;
var _pIndex = _this.index - 1;
var _nIndex = _this.index + 1;
if(_this.index == 0){
_pIndex = _length - 1;
}else if(_this.index < 0){
_this.index = _length - 1;
_pIndex = _this.index - 1;
_nIndex = 0;
}else if(_this.index == (_length - 1)){
_nIndex = 0;
}else if(_this.index > (_length - 1)){
_cIndex = _this.index = 0;
_pIndex = _length - 1;
_nIndex = _this.index + 1;
}
_this.current = _this.items.eq(_cIndex);
_this.next = _this.items.eq(_nIndex);
_this.prev = _this.items.eq(_pIndex);
_this.other = _this.items;
// console.log(_pIndex + '--' + _cIndex +'--' + _nIndex);
_this.items.css({
left:(_containerW - _currentW ) / 2,
top:(_containerH - _currentH) /2,
zIndex:1,
transform:'scale(0.6)'
})
_this.current.css({
left:(_containerW - _currentW ) / 2,
top:(_containerH - _currentH) /2,
zIndex:4,
transform:'scale(1)',
opacity:'1'
})
_this.next.css({
left:_containerW - _currentW + 60,
top:(_containerH - _currentH) /2,
zIndex:3,
transform:'scale(0.8)',
opacity:'.6'
})
_this.prev.css({
left:0 - 60,
top:(_containerH - _currentH) /2,
zIndex:2,
transform:'scale(0.8)',
opacity:'.6'
})
_this.current.bind('transitionend',function(){
_this.current.unbind('transitionend');
_this.container.removeClass('ani');
});
},
bind:function(){
var _this = this;
_this.container.on('click','.prev',function(){
_this.change(false);
});
_this.container.on('click','.next',function(){
_this.change(true);
});
},
init:function(){
var _this = this;
_this.dom();
_this.bind();
}
}
banner.init();
</script>
</body>
</html>