【实践】列表---鼠标滑过与上下键选择 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>下拉列表</title>
<style type="text/css">
.now{ color:red;}
.ullishes{ width:100px; overflow:hidden;}
</style>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript">
$(function(){
    $('div.aa').data('key',0);
    $('ul.ullishes li').hover(function(){
        $('ul.ullishes li').removeClass('now');
        var index=$(this).index();
        $(this).addClass('now');
        $('div.aa').data('key',index);
        console.log($('div.aa').data('key'));
    },function(){
        $(this).removeClass('now');
    });



    
    $('.inp_match').keydown(function(event){
        $('ul.ullishes li').removeClass('now');
        var keycode = event.which;
        if(keycode == 38){
            var i =  $('div.aa').data('key');
            if(i<0){
                i=3;
            }else{
                i--;
            }
            $('ul.ullishes').find('li').eq(i).addClass('now');
            $('div.aa').data('key',i);
        }
                
        if(keycode == 40){
            var i =  $('div.aa').data('key');
            if(i>3){
                i=0;
            }else{
                i++;
            }
            $('ul.ullishes').find('li').eq(i).addClass('now');
            $('div.aa').data('key',i);
        }
    })
    
})
</script>
</head>

<body>
<div class="aa"><input type="text" class="inp_match" /></div>
<ul class="ullishes">
    <li></li>
    <li>1111</li>
    <li>2222</li>
    <li>3333</li>
    <li>4444</li>
</ul>
</body>
</html>

 

posted @ 2014-07-09 14:05  Western Journey  阅读(266)  评论(0)    收藏  举报