[javascript]代码库
$(function(){
var iconH = $(".sprite").find("s").height(),
triggerLi = $(".sprite").children("li");
//console.log(iconH);
triggerLi.each(function(){
var $this = $(this),
$index = $this.index();
//console.log($index)
//console.log(iconH*$index);
$this.children("s").css("background-position","0 -"+ iconH*$index +"px")
$this.hover(function(){
// 鼠标移入
$this.children("s").css("background-position","-24px -"+ iconH*$index +"px")
},function(){
// 鼠标移出
$this.children("s").css("background-position","0 -"+ iconH*$index +"px")
})
})
})