jQuery+php实现ajax文件上传

老爷子88

$(function () {
var bar = $('.bar');
var percent = $('.percent');
var showimg = $('#showimg');
var progress = $(".progress");
var files = $(".files");
var btn = $(".btn span");
$(".demo").wrap("<form id='myupload' action='action.php' method='post' enctype='multipart/form-data'></form>");
$("#fileupload").change(function(){
$("#myupload").ajaxSubmit({
dataType:  'json',
beforeSend: function() {
showimg.empty();
progress.show();
var percentVal = '0%';
bar.width(percentVal);
percent.html(percentVal);
btn.html("上传中...");
},
uploadProgress: function(event, position, total, percentComplete) {
var percentVal = percentComplete + '%';
bar.width(percentVal)
percent.html(percentVal);
},
/*complete: function(xhr) {
$(".files").html(xhr.responseText);
},*/
success: function(data) {
files.html("<b>"+data.name+"("+data.size+"k)</b> <span class='delimg' rel='"+data.pic+"'>删除</span>");
var img = "http://demo.helloweba.com/upload/files/"+data.pic;
showimg.html("<img src='"+img+"'>");
btn.html("添加附件");
},
error:function(xhr){
btn.html("上传失败");
bar.width('0')
files.html(xhr.responseText);
}
});
});
$(".delimg").live('click',function(){
var pic = $(this).attr("rel");
$.post("action.php?act=delimg",{imagename:pic},function(msg){
if(msg==1){
files.html("删除成功.");
showimg.empty();
progress.hide();
}else{
alert(msg);
}
});
});
});