jq上传文件

function upload() {

     var fd = new FormData();
     fd.append("upload", 1);
     //这个upfile相当于input里面的name
     fd.append("upfile", $('#id').get(0).files[0]);
     $.ajax({
     url: "upload.php",
     type: "POST",
     processData: false,
     contentType: false,
     data: fd,
     success: function(d) {
     console.log(d);
     }
     });
    }

下面是同步请求，返回文件路径的

    function upload(el) {
     var src = '';
     var fd = new FormData();
     fd.append("upload", 1);
     //这个upfile相当于input里面的name
     fd.append("upfile", $('#'+el).get(0).files[0]);
     $.ajax({
     url: "upload.php",
     type: "POST",
     async:false,
     processData: false,
     contentType: false,
     data: fd,
     success: function(d) {
     src=d;
     }
     });
     return src;
     }