一个漂亮的上传按钮input[type=file]

.xj-file input[type=file]{border:none; outline:none; position:absolute; top:; left:0px; width:54px; height:34px; cursor:pointer; filter:alpha(opacity=0); opacity:;}

<div class="input-group xj-file xj-panel-top">
<span class="input-group-btn">
<button class="btn btn-default" type="button">浏览</button>
</span>
<input type="text" class="form-control" id="viewfile" placeholder="">
<input type="file" id="" onchange="document.getElementById('viewfile').value=this.value;">
</div>