jQuery中的Ajax就像这样:

Ajax in jQuery works like this:

var myData=1;
$.ajax({
    type:'POST',//type of ajax
    url:'mypage.php',//where the request is going
    data:myData,//the variable you want to send
    beforeSend:function(xhr){//as a standard, I add this to validate stuff
        if(someThingWrong===true)xhr.abort//aborts xhttpRequest
   },
   success:function(result){
       //result is your result from the xhttpRequest.
   }
});

这不会刷新您的页面，但会向指定的网址发送"POST".在您指定的页面上，您想做任何您想做的事情并说返回结果.在我的示例中，我将做一些简单的事情:

This will not refresh your page but send a 'POST' to the url specified. On your specified page you want to do whatever it is you want to do and say return a result. In my example I'll do something simple:

if($_POST['myData']===1)return True;

这是使用jQuery进行AJAX请求的基础.

That's the basics of an AJAX request using jQuery.

编辑！

启动AJAX脚本: 我只是在猜测，因为我不知道您的html中的元素还是您的脚本中的任何元素！因此，您必须进行调整！

initiating an AJAX script: I'm only guess as I don't know your elements within your html nor your scripts what so ever! So you'll have to make adjustments!

$('button.dislike').click(function(){
    $.ajax({
        type:'POST',
        url:'disliked.php',
        data:{dislike:$(this).attr('id')},
        success:function(result){
            $(this).prev('span').append(result);
        }
    });
 });

PHP: 不要使用mysql，它已被贬值，被认为是不正确的做法，我也不知道为什么在查询中使用sprintf? :S

PHP: don't use mysql, it's now been depreciated and is considered bad practise, I also don't know why're using sprintf on the query? :S

$DBH=new mysqli('location','username','password','database');
$get=$DBH->prepare("SELECT dislike FROM random WHERE ids=?");
$get->bind_param('i',$_POST['dislike']);
$get->execute();
$get->bind_result($count);
$get->close();
$update=$DBH->prepare('UPDATE random SET dislike=? WHERE ids=?');
$update->bind_param('ii',++$count,$_POST['dislike']);//if you get an error here, reverse the operator to $count++.
$update->execute();
$update->close();
return String $count++;

仅当HTML中存在一系列ID与数据库中的ID匹配的按钮时，此方法才有效.所以

This will only work if there in your HTML there is a series of buttons with ID's matching those in your database. So

$get=$DBH->prepare('SELECT ids FROM random');
$get->execute();
$get->bind_result($ids);
while($get->fetch()){
    echo"<button class='dislike' id='".$ids."'>Dislike this?</button>";
}

希望您对我如何管理不喜欢的按钮系统XD大声笑有个大概的认识

Hope you get the general idea of how I'm managing your dislike button system XD lol