php - File upload with jQuery and ajax not working -


file uploading working in program after refreshing page.

javascript

<script src="http://code.jquery.com/jquery-1.9.1.js"></script> <script type="text/javascript" src="<?php echo base_url()?>assets/scripts/ajaxfileupload.js"></script> <script type="text/javascript">     function ajaxfileupload(){     $("#loading")     .ajaxstart(function(){           $(this).show();     })     .ajaxcomplete(function(){         $(this).hide();     });     $.ajaxfileupload         (             {                 url:'<?php echo site_url()?>/welcome/doupload',                 secureuri:false,                 fileelementid:'filetoupload',                 datatype: 'json',                 success: function (data, status){                     if(typeof(data.error) != 'undefined'){                         if(data.error != ''){                             $("#info").html(data.error);                         } else {                             $("#info").html(data.msg);                         }                     }                 },                 error: function (data, status, e){                     $("#info").html(e);                 }             }         )         return false;     } </script>

html

<form name="form" action="" method="post" enctype="multipart/form-data">     <input id="filetoupload" type="file" size="45" name="filetoupload" class="input">     <button class="button" id="buttonupload" onclick="return ajaxfileupload();">upload</button>   </form>

controller

public function doupload() {     $error = "";     $msg = "";     $config['upload_path'] = './assets/';     $config['allowed_types'] = 'doc|xls|ppt|pdf|rar|jpg';     $config['max_size'] = '1000';     $this->load->library('upload', $config);     $this->upload->display_errors('','');     if ( ! $this->upload->do_upload("filetoupload")) {         $error = $this->upload->display_errors();     } else {         $msg = "success";     }     echo "{";     echo "error: '" . $error . "',n";     echo "msg: '" . $msg . "'n";     echo "}"; }

my guess buttons of "submit" type default when in form tag.

try set type "button" : 

<button type="button" class="button" id="buttonupload" onclick="return ajaxfileupload();">upload</button>

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