???? ????? JavaScript ??
?? ?? ??? ???? ??? ???? ???
??? ????? ???? ???? ??? ??? ??? ?? ? ???? ? ??? ????. ?? ?? ??? ???? ? ??? ?????
?? HTML ???? ??? ???????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
table{width:350px;border:1px solid #eee;text-align:center;}
.tr2{height:50px;}
input{width:30px;height:20px;text-align: center;}
a{text-decoration:none}
</style>
</head>
<body>
<table cellspacing="0" cellpadding="0" border="1">
<tr>
<th>名稱</th>
<th>單價(jià)</th>
<th>數(shù)量</th>
<th>總價(jià)</th>
</tr>
<tr class="tr2">
<td>手表</td>
<td id="td">1999</td>
<td>
<a href="#" id="a1" class="tp1">-</a>
<input type="text" value="1" id="id">
<a href="#" id="a2" class="tp2">+</a>
</td>
<td id="td2">1999</td>
</tr>
</table>
</body>
</html>? ??? ???? ??? ??? ??? ? ?? ??? ?? ?? ? ? ????. ??? ??? ?? id='td'? ?? ?? 1999? ????. ??? ??????. ??
id="td2" ?? ? ??
? ???? ? ?????.
