使用jQuery ajaxupload插件实现无刷新上传文件

<script type="text/javascript">$(function () {var button = $('#upload');new AjaxUpload(button, {action: '/upload/imagesAjaxUpload',name: 'upload',onSubmit: function (file, ext) {if (!(ext && /^(jpg|jpeg|JPG|JPEG)$/.test(ext))) {alert('图片格式不正确,请选择 jpg 格式的文件!', '系统提示');return false;}// change button text, when user selects filebutton.text('上传中');// If you want to allow uploading only 1 file at time,// you can disable upload buttonthis.disable();// Uploding -> Uploading. -> Uploading...interval = window.setInterval(function () {var text = button.text();if (text.length < 10) {button.text(text + '...');} else {button.text('上传中');}}, 200);},onComplete: function (file, response) {window.clearInterval(interval);// enable upload buttonthis.enable();var json = eval('(' + response + ')');button.text('选择文件');$(".qr").css("display","inline");$(".qr>img").attr("src",json.file_name);$("input[name='wechat_qr']").val('/uploads/qr/'+json.file_name);//alert(json.file_name);//$("#ajaximg").html("<img src='/uploads/qr/"+json.file_name+"' />");//$("#wechat_qr").val('/uploads/qr/'+json.file_name);}});});</script>