jquery实现简洁文件上传表单样式

<div class="uploader white"><input type="text" class="filename" readonly="readonly"/><input type="button" name="file" class="button" value="Browse..."/><input type="file" size="30"/></div>

.uploader{position:relative;display:inline-block;overflow:hidden;cursor:default;padding:0;margin:10px 0px;-moz-box-shadow:0px 0px 5px #ddd;-webkit-box-shadow:0px 0px 5px #ddd;box-shadow:0px 0px 5px #ddd;-moz-border-radius:5px;-webkit-border-radius:5px;border-radius:5px;}.filename{float:left;display:inline-block;outline:0 none;height:32px;width:180px;margin:0;padding:8px 10px;overflow:hidden;cursor:default;border:1px solid;border-right:0;font:9pt/100% Arial, Helvetica, sans-serif; color:#777;text-shadow:1px 1px 0px #fff;text-overflow:ellipsis;white-space:nowrap;-moz-border-radius:5px 0px 0px 5px;-webkit-border-radius:5px 0px 0px 5px;border-radius:5px 0px 0px 5px;background:#f5f5f5;background:-moz-linear-gradient(top, #fafafa 0%, #eee 100%);background:-webkit-gradient(linear, left top, left bottom, color-stop(0%,#fafafa), color-stop(100%,#f5f5f5));filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fafafa', endColorstr='#f5f5f5',GradientType=0);border-color:#ccc;-moz-box-shadow:0px 0px 1px #fff inset;-webkit-box-shadow:0px 0px 1px #fff inset;box-shadow:0px 0px 1px #fff inset;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box;}.button{float:left;height:32px;display:inline-block;outline:0 none;padding:8px 12px;margin:0;cursor:pointer;border:1px solid;font:bold 9pt/100% Arial, Helvetica, sans-serif;-moz-border-radius:0px 5px 5px 0px;-webkit-border-radius:0px 5px 5px 0px;border-radius:0px 5px 5px 0px;-moz-box-shadow:0px 0px 1px #fff inset;-webkit-box-shadow:0px 0px 1px #fff inset;box-shadow:0px 0px 1px #fff inset;}.uploader input[type=file]{position:absolute;top:0; right:0; bottom:0;border:0;padding:0; margin:0;height:30px;cursor:pointer;filter:alpha(opacity=0);-moz-opacity:0;-khtml-opacity: 0;opacity:0;}input[type=button]::-moz-focus-inner{padding:0; border:0 none; -moz-box-sizing:content-box;}input[type=button]::-webkit-focus-inner{padding:0; border:0 none; -webkit-box-sizing:content-box;}input[type=text]::-moz-focus-inner{padding:0; border:0 none; -moz-box-sizing:content-box;}input[type=text]::-webkit-focus-inner{padding:0; border:0 none; -webkit-box-sizing:content-box;}

<script>$(function(){ $("input[type=file]").change(function(){$(this).parents(".uploader").find(".filename").val($(this).val());}); $("input[type=file]").each(function(){ if($(this).val()==""){$(this).parents(".uploader").find(".filename").val("No file selected...");} });});</script>