Getting ERR_EMPTY_RESPONSE on $.POST

Question

I have a simple social networking site with chat functionality. I have used $.post a lot in multiple pages. The code works well on all pages except message.php

Answer 1

As you appear to want an autocomplete type setup, use a timer. Reset it on each keypress and after a delay send your post. In this example it will send 3 seconds after the last keypress.

$(document).ready(function(e) {
  var timer;
  $(".abc").keyup(function() {
    var $input= $(this);
    // Start timer
    clearTimeout(timer);
    // Start a new 3 second timer
    timer = setTimeout(function() {
        // Once the 
      var a = $input.val();
      $(".showoff").text("wait..");
      $.post('bbs.php', {
        a: a
      }, function(abc) {
        $(".showoff").html(abc);
      });
    }, 3000);
  });
});

JSFiddle: https://jsfiddle.net/TrueBlueAussie/Locpnk35/

This will avoid overloading your server as no more than 1 request every 3 seconds can come from the same user. If the response is slower than 3 seconds you may also need to disable the key handler while an Ajax request is in progress.