1、button可下拉弹出层:

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HTML代码:
<div class="porpre">
<div class="input-group-btn" style="width: auto">
<a href="CustomerInformationDetails.aspx? Id=7&phone=15821789965&RecommendationNumber=54231896&tabPage=CustomerDetail" class="btn btn-primary dropdown-toggle"> 查 看 </a>
<a href="javascript:void(0);" onclick="btngroupClick(this,event)" class="btn btn-primary dropdown-toggle" data-toggle="dropdown"><span class="caret"></span></a>
</div>
<div style="display: block;" class="pHide" id="pHide">
<ul>
<li>
<a href="CustomerInformationDetails.aspx? Id=7&phone=15821789965&RecommendationNumber=54231896&tabPage=ViewAccount" class="btn btn-success ">查看子号</a>
</li>
<li>
<a href="CustomerInformationDetails.aspx?Id=7&phone=15821789965&RecommendationNumber=54231896&tabPage=Records" class="btn btn-info ">推荐记录</a>
</li>
<li>
<a href="CustomerInformationDetails.aspx?Id=7&phone=15821789965&RecommendationNumber=54231896&tabPage=FailureOrder" class="btn btn-warning ">未报订单</a>
</li>
<li>
<a href="CustomerInformationDetails.aspx? Id=7&phone=15821789965&RecommendationNumber=54231896&tabPage=DaijiaRecords" class="btn btn-danger ">代驾记录</a>
</li>
<li>
<a href="CustomerInformationDetails.aspx? Id=7&phone=15821789965&RecommendationNumber=54231896&tabPage=RechargeRecord" class="btn btn-primary ">充值记录</a>
</li>
<li class="ma">
<a href="CustomerInformationDetails.aspx?Id=7&phone=15821789965&RecommendationNumber=54231896&tabPage=BillingRecord" class="btn btn-warning ">开票记录</a>
</li>
</ul>
</div>
</div>
弹出层CSS:
.porpre {
float: left;
position: relative;
} .pHide {
background-color: #fff;
padding: 0px 0px;
width: 580px;
border: 2px solid #EFEFEF;
height: auto !important;
overflow: hidden;
position: absolute;
top: 42px;
left: -460px;
display: none;
z-index: 999;
} .pHide ul {
list-style: none;
padding: 10px;
padding-left: 17px;
height: 55px;
} .pHide li, .pHide li a {
float: left;
height: 32px;
height: auto !important;
min-height: 32px;
} .pHide li {
margin: 5px;
} .pHide li.ma {
margin-right: 0;
} .pHide li a {
color: #fff;
}
运行的JS:
function btngroupClick(obj, event) {
var top = $(obj).offset().top;
var left = $(obj).offset().left;
var x = event.clientX;
var y = event.clientY; // $(obj).next().css('top', x + 'px').css('left', y + 'px');
$(obj).parent().next().eq(0).toggle();
}