javascript - Json jQuery and php doesn't process value's correct -

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i have : html + jquery + ajax post , php file process form values , returning error(true or false) , message html markups.

my javascript code: 

$(document).ready(function() {   var form = $('#form'); // contact form   var submit = $('#submit');  // submit button   var alert = $('.alert'); // alert div show alert message    // form submit event   form.on('submit', function(e) {     e.preventdefault(); // prevent default form submit      $.ajax({       url: 'contact.php', // form action url       type: 'post', // form submit method get/post       datatype: 'json', // request type html/json/xml       data: form.serialize(), // serialize form data       beforesend: function() {         alert.fadeout();         submit.html('sending....'); // change submit button text       },     success: function(result) {         if(result.error){             /* on error stuff */             alert(result.html).fadein();         }else{             /* on success stuff */             alert(result.html).fadein();         }     }     });   }); });

and @ last php:

if( isset( $_server['http_x_requested_with'] ) ){ $result = array("error" => false, "html" => null); $vars = array('name', 'email','telefoonnummer', 'message'); $verified = true; foreach($vars $v) {    if(!isset($_post[$v]) || empty($_post[$v])) {       $verified = false;    } }        if(!$verified) {   $result["error"] = true; $result["html"] = "<b>error11</b>";     echo json_encode($result);     exit; }      $name = filter_var($_post['name'], filter_sanitize_string); $email = filter_var($_post['email'], filter_sanitize_email); $tel= filter_var($_post['telefoonnummer'], filter_sanitize_string); $message = filter_var($_post['message'], filter_sanitize_string);      $to = ''; $sent = email($to, $email, $name, $tel, $message); if ($sent) { $result["error"] = false; $result["html"] = "<b>success</b>";     echo json_encode($result); } else { $result["error"] = true; $result["html"] = "<b>error</b>";     echo json_encode($result);     }    return; }  /**  * email send headers  *  * @return bool | void  **/ function email($to, $name, $email, $tel, $message){   $header = array();   $header[] = "mime-version: 1.0";   $header[] = "from: <".$name."> <".$email.">";    /* set message content type html*/   $header[] = "content-type:text/html; charset=iso-8859-1";   $header[] = "content-transfer-encoding: 7bit";   if( mail($to, $tel, $message, implode("\r\n", $header)) ) return true; }

ok.. that's clear know goes wrong error returning, show , goes away again n html don't know happens there..

i don't want "fixes" can copy paste code explanation of happened , goes wrong , how solve (at least learn little)

you using alert in 2 different ways... 1 time object, 1 time function. latter causes undesired effect. closely @ brackets after alert;

  • alert() function
  • alert. signafies it's object

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