用jQuery插件实现无刷新上传文件代码分享

<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 file
button.text('上传中');
// If you want to allow uploading only 1 file at time,
// you can disable upload button
this.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 button
this.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>