formdata js
var form = $('form')[0]; // You need to use standard javascript object here var formData = new FormData(form); or specify exact data for FormData(); var formData = new FormData(); formData.append('section', 'general'); formData.append('action', 'previewImg'); // Attach file formData.append('image', $('input[type=file]')[0].files[0]); Sending form Ajax request with jquery will looks like this: $.ajax({ url: 'Your url here', data: formData, type: 'POST', contentType: false, // NEEDED, DON'T OMIT THIS (requires jQuery 1.6+) processData: false, // NEEDED, DON'T OMIT THIS // ... Other options like success and etc }); After this it will send ajax request like you submit regular form with enctype="multipart/form-data" Update: This request cannot work without type:"POST" in options since all files must be sent via POST request.
