My code works in xampp but not on the 000webhost.com

Question

when i test it on localhost it works fine but when i use it on website "000webhost.com" console writes "BAD!" (as it is in code). I have no idea about why it is working on localhost and why not on 000webhost.com

There is my ajax:

var xmlhttp = (window.XMLHttpRequest)?new XMLHttpRequest():new ActiveXObject("Microsoft.XMLHTTP");

xmlhttp.onreadystatechange=function(){
  if(xmlhttp.readyState==4 && xmlhttp.status==200){
    var respText = xmlhttp.responseText;
    try{
      var json = JSON.parse(respText);
      console.log("GOOD!");
    }
    catch(e){
      console.log("BAD!");
    }
  }
}

xmlhttp.open(method,url + "?" + parameters,true);
xmlhttp.send();

There is my php:

//$content is html code ex: <span>I'm here</span>
$resp = array(
  'r' => true,
  'response'  =>  $content,
);
echo json_encode($resp);

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When i delete try it makes error unexpected token <

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Sorry for my English and thank you for helping.

Answer 1

Have you checked your JSON ? By the sounds of the error, it sounds like your JSON is invalid.

Answer 2

确保通过OPEN方法中的URL，这是代码中唯一的事情