var starGroup = document.getElementById('star').children;
function starFunc() {
for (var i = 0; i < 5; i++) {
starGroup[i].onmouseover = starHover; //把所有星星註冊moveover事件
starGroup[i].index = i;
};
}
function starHover()
{
var curIndex = this.index;//滑鼠移入時獲得該星星的索引
starLight(curIndex);
}
function starLight(index) {
for (var i = 0; i < starGroup.length; i++)
{
if (i <= index) {
starGroup[i].className = "s";//點亮星星
}
else {
starGroup[i].className = "n";//熄掉星星
}
}
}