(function($){
$.fn.shadow = function(opts){
//定义的默认的参数
var defaults = {
copies: 5,
opacity:0.1,
//回调函数
copyOffset:function(index){
return{x:index,y:index};
}
};
//将opts的内容合并到default中。
var options = $.extend(defaults,opts);
return this.each(function(){
var $originalElement = $(this);
//设置参数对象
for(var i=0;i<options.copies;i++)
{
var offset = options.copyOffset(i);
$originalElement
.clone()
.css({
position:'absolute',
left:$originalElement.offset().left + offset.x,
top:$originalElement.offset().top + offset.y,
margin:0,
zIndex:-1,
//设置参数对象
opacity:options.opacity
})
.appendTo('body');
}
});
};
})(jQuery);
$(document).ready(function(){
$('h1').shadow({
copies:5,
copyOffset:function(index){
return {x:-index,y:-2 * index};
}
});
});
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Developing Plugins</title> <link rel="stylesheet" href="08.css" type="text/css" /> <link rel="stylesheet" href="ui-themes/smoothness/jquery-ui-1.10.0.custom.css" type="text/css" /> <script src="jquery.js"></script> <script src="jquery-ui-1.10.0.custom.min.js"></script> <script src="08.js"></script> </head> <body> <div id="container"> <h1>Inventory</h1> <table id="inventory"> <thead> <tr class="two"> <th>Product</th> <th>Quantity</th> <th>Price</th> </tr> </thead> <tfoot> <tr class="two" id="sum"> <td>Total</td> <td></td> <td></td> </tr> <tr id="average"> <td>Average</td> <td></td> <td></td> </tr> </tfoot> <tbody> <tr> <td><a href="spam.html" data-tooltip-text="Nutritious and delicious!">Spam</a></td> <td>4</td> <td>2.50</td> </tr> <tr> <td><a href="egg.html" data-tooltip-text="Farm fresh or scrambled!">Egg</a></td> <td>12</td> <td>4.32</td> </tr> <tr> <td><a href="gourmet-spam.html" data-tooltip-text="Chef Hermann's recipe.">Gourmet Spam</a></td> <td>14</td> <td>7.89</td> </tr> </tbody> </table> </div> </body> </html>
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