通过jQuery $ .post上传文件

For send ajax form i use this code :

<input type="file" class="file_1" id="file" />

• note : not use "FORM" tag

My jQuery code :

var file = $('#file').val();
$.post('form.php', {file:file}, function(data){});

And my PHP code :

if($_FILES["file"]["tmp_name"] != '') {
            $fileName = $_FILES["file"]["name"];
            $fileTmpLoc = $_FILES["file"]["tmp_name"];
            $fileType = $_FILES["file"]["type"];
            $fileSize = $_FILES["file"]["size"];
        }
echo $fileName;

But this code not work

I think that you can´t. Nevertheless, there are some tools that "emulate" it. Check up this tutorial: http://hayageek.com/ajax-file-upload-jquery/

Or this question: Is it possible to use Ajax to do file upload?

You are trying to post a adress name (on the other words you post a string) but file upload needs to be a file. then you can find the answer from the this link:

Uploading both data and files in one form using Ajax?