我正在调整Coverflow technique以使用div。以下是html:
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<style type="text/css" media="screen">
body,html {
margin: 0;
padding: 0;
background: #000;
height: 100%;
color: #eee;
font-family: Arial;
font-size: 10px;
}
div.magnifyme {
height: 80px;
padding: 80px;
position: absolute;
top: 0px;
left: 0px;
width: 2000px;
}
div.wrapper {
margin: 0px;
height: 470px;
/*border: 2px solid #999;*/
overflow: hidden;
padding-left: 40px;
right: 1px;
width: 824px;
position: relative;
}
div.container {position: relative; width: 854px; height: 480px; background: #000; margin: auto;}
div.nav {position: absolute; top: 10px; width: 20%; height: 10%; right: 1px; }
div.magnifyme div {
position: absolute;
width: 300px;
height: 280px;
float: left;
margin: 5px;
position: relative;
border: 2px solid #999;
background: #500;
}
</style>
<script type="text/javascript" src="jquery-1.3.2.js"></script>
<script type="text/javascript" src="ui.coverflow.js"></script>
<script type="text/javascript" src="ui.core.js"></script>
<script type="text/javascript">
$(function() {
$("div.magnifyme").coverflow();
$("#add").click(function() {
$(".magnifyme").append("<div id=\"div5\">hello world</div>");
$("div.magnifyme").coverflow();
});
});
</script>
</head>
<body>
<div class="container">
<div class="wrapper">
<div class="magnifyme">
<div id="div0">This is div 0</div>
<div id="div1">This is div 1</div>
<div id="div2">This is div 2</div>
<div id="div3">This is div 3</div>
<div id="div4">This is div 4</div>
</div>
</div>
<div class="nav">
<button type="button" id="add">Add to Deck</button>
</div>
</div>
</body>
</html>
封面流功能(作为头部中的js文件包含)为here。当我点击按钮时,我期待它将DIV添加到已经存在的套牌中。出于某种原因,它不会显示新添加的DIV。我添加了新元素之后尝试调用了coverflow()函数,但这也无效。修改后的封面流程功能在此处给出:
;(function($){
$.widget("ui.coverflow", {
init: function() {
var self = this;
this.items = $(this.options.items, this.element).bind("click", function() {
self.moveTo(this);
//$("div.slider").slider("moveTo", self.current, null, true);
});
this.itemWidth = this.items.outerWidth(true);
this.current = 0; //Start item
this.refresh(1, 0, this.current);
this.element.css("left",
(-this.current * this.itemWidth/2)
+ (this.element.parent()[0].offsetWidth/2 - this.itemWidth/2) //Center the items container
- (parseInt(this.element.css("paddingLeft")) || 0) //Subtract the padding of the items container
);
},
moveTo: function(item) {
this.previous = this.current;
this.current = !isNaN(parseInt(item)) ? parseInt(item) : this.items.index(item);
if(this.previous == this.current) return false; //Don't animate when clicking on the same item
var self = this, to = Math.abs(self.previous-self.current) <=1 ? self.previous : self.current+(self.previous < self.current ? -1 : 1);
$.fx.step.coverflow = function(fx) {
self.refresh(fx.now, to, self.current);
};
this.element.stop().animate({
coverflow: 1,
left: (
(-this.current * this.itemWidth/2)
+ (this.element.parent()[0].offsetWidth/2 - this.itemWidth/2) //Center the items container
- (parseInt(this.element.css("paddingLeft")) || 0) //Subtract the padding of the items container
)
}, {
duration: 1000,
easing: "easeOutQuint"
});
/*current = this.current;
$("[id^=div]").each(function() {
if(this.id != "div"+current) {
console.info(this.id + " Current: " + current);
$(this).fadeTo( 'slow', 0.1);
}
});*/
},
refresh: function(state,from,to) {
var self = this, offset = null;
this.items.each(function(i) {
var side = (i == to && from-to < 0 ) || i-to > 0 ? "left" : "right";
var mod = i == to ? (1-state) : ( i == from ? state : 1 );
var before = (i > from && i != to);
$(this).css({
webkitTransform: "matrix(1,"+(mod * (side == "right" ? -0.5 : 0.5))+",0,1,0,0) scale("+(1+((1-mod)*0.5))+")",
left: (
(-i * (self.itemWidth/2))
+ (side == "right"? -self.itemWidth/2 : self.itemWidth/2) * mod //For the space in the middle
),
zIndex: self.items.length + (side == "left" ? to-i : i-to)
});
if(!$.browser.msie)
$(this).css("opacity", 1 - Math.abs((side == "left" ? to-i : i-to))/2);
});
}
});
$.extend($.ui.coverflow, {
defaults: {
items: "> *"
}
});
})(jQuery);
我注意到的一件事是,在点击按钮约5-10次之后,元素会显示但不会与已经存在的div一起显示,而是在它们之下。我猜这与magnifyme类(2000px)的CSS有关,但我不确定它是什么。有什么方法可以让我的工作吗?
答案 0 :(得分:3)
您需要为coverflow小部件编写一个附加功能:
add: function(el) {
var self = this;
this.element.append(el)
this.options.items = $('> *', this.element);
this.items = $(this.options.items, this.element).bind("click", function() {
self.moveTo(this);
});
this.itemWidth = this.items.outerWidth(true);
this.moveTo(this.items.length-1);
},
然后像这样调用它:
$("#add").click(function() {
$("div.magnifyme").coverflow('add', "<div></div>");
});
答案 1 :(得分:2)
首先,您需要添加对jQuery UI核心的引用,并且它似乎还需要jQuery滑块插件。
其次,在您的点击事件中,您正在执行location.reload,它正在从服务器刷新页面,重置您对页面所做的任何更改。 (如果你让DIV小得多,你可以在重新加载页面之前看到一个闪存)。
答案 2 :(得分:1)
您在页面上遇到js错误 - “$ .widget不是函数”,因为您没有包含jqueryUI库。 http://jqueryui.com/
此外,如果你删除了location.reload行,你的代码也会工作,但是,我会像这样重写那个脚本块,这样当文档准备就绪时,一切都清楚地运行了:
<script type="text/javascript">
$(document).ready(function() {
$("div.magnifyme").coverflow();
$("#add").click(function() {
$(".magnifyme").append("<div id=\"div5\">hello world</div>");
$("div.magnifyme").coverflow();
});
});
</script>