使用jQuery上传多部分文件

$("input:file").change(function(objEvent) {
    var objFormData = new FormData();
    // GET FILE OBJECT 
    var objFile = $(this)[0].files[0];
    // APPEND FILE TO POST DATA
    objFormData.append('userfile', objFile);
    $.ajax({
        url: 'Here Your Server-Url'
        type: 'POST',
        contentType: false,
        data: objFormData,
        //JQUERY CONVERT THE FILES ARRAYS INTO STRINGS.SO processData:false
        processData: false,
        success: function(data) {}
    });
});