效果:
样式:
<style>
.gw_num{
border: 1px solid #dbdbdb;
width: 110px;line-height: 35px;
overflow: hidden;
}
.gw_num em{display: block;
height: 35px;
width: 31px;
float: left;
color: #7A7979;
border-right: 1px solid #dbdbdb;
text-align: center;
cursor: pointer;
font-style:normal;
}
.gw_num .num{display: block;
float: left;
text-align: center;
width: 42px;
font-style: normal;
font-size: 14px;
line-height: 35px;
border: 0;
}
.gw_num em.add{
float: right;
border-right: 0;
border-left: 1px solid #dbdbdb;
}
</style>
html:
<div class="gw_num">
<em class="jian">-</em>
<input type="text" value="5" class="num" />
<em class="add">+</em>
</div>
js:
<script>
//加
$(".add").click(function(){
var n=$(this).prev().val();
var num=parseInt(n)+1;
if(num>20){ return;}
$(this).prev().val(num);
});
//减
$(".jian").click(function(){
var n=$(this).next().val();
var num=parseInt(n)-1;
if(num<1){ return;}
$(this).next().val(num);
});
</script>