ajax 上传图片 并预览

 <img {if !$article[pic]}style="display: none"{/if} width="82" height="60" src="../attach/$article[pic]" id="pic"> 

$(function () {
var files = $(".files");
$("#fileupload").wrap("<form id='myupload' action="{$php_self}ajaxArticlePic" method='post' enctype='multipart/form-data'>");
$("#fileupload").change(function(){
$("#myupload").ajaxSubmit({ dataType: 'json', success: function(data) { $("#pic").css("display","block"); $("#pic").attr("src","../attach/"+data);$("#pic_name").val(data); },
error:function(xhr){alert("错误")}
});
});
});