Ajax表单异步上传文件实例代码（包括文件域）

$("#view").submit(
$("#view").ajaxSubmit({
type: "post",
url: "../api/Article/Add",
dataType: "json",
success: function (msg) {
console.log(msg);
},
error: function (msg) {
$("#resultBox").html("连接服务器失败");
console.log(msg);
}
})
);

// are there files to upload&＃63;
var files = $('input:file', this).fieldValue();
var found = false;
for (var j=0; j 

function AjaxForm(formID, options) {
var form = $(formID);
//将form对象直接作为参数 new FormData对象
var formData = new FormData(form[0]);
$("input[type='file']").forEach(function (item, i) {
//获取file对象 即相当于可以直接post的$_FILES数据
var domFile = $(item)[0].files[0];
//追加file 对象
formData.append('file', domFile);
})
if (!options)optiOns= {};
options.url = options.url &＃63; options.url : form.attr("action");
options.type = options.type &＃63; options.type : form.attr("method");
options.data = formData;
options.processData = false; // tell jQuery not to process the data
options.cOntentType= false; // tell jQuery not to set contentType
options.xhr = options.xhr &＃63; options.xhr : function () {
//这是关键 获取原生的xhr对象 做以前做的所有事情
var xhr = $.ajaxSettings.xhr();
xhr.upload.Onload= function () {
console.log("onload");
}
xhr.upload.Onprogress= function (ev) {
if (ev.lengthComputable) {
var percent = 100 * ev.loaded / ev.total;
console.log(percent, ev)
}
}
return xhr;
};
options.success = options.success &＃63; options.success : function (data) {
alert(data)
};
$.ajax(options);
}
//调用
$("#sub").click(function (e) {
AjaxForm("#myForm");
});