我正在尝试在页面上创建一个类似的按钮,似乎无法让它正常工作。基本上有三个函数使用ajax将数据发送到更新数据库的php页面。我已经检查了数据库,所有三个都正确更新。如果用户最初不喜欢并点击,它会正确显示不同的按钮但是,如果你点击不同它不会切换回来(虽然它会更新数据库)。
这是正确的设置方法吗?我对ajax很新,我不确定这是否是正确的方法。提前致谢 史蒂夫
public function likesScript($p){?>
<script>
//display list of people who like this
function getLikes(){
$.ajax({
type: "POST",
url: "likelist.php",
data: { p: "<?php echo $_GET['p']?>"}
}).success(function(res) {
//check to see if current user likes this
if($('li#<?PHP echo $_SESSION['userId']; ?>').length){
$(".Like").addClass('hidden');
$(".UnLike").removeClass('hidden');
}
else{
$(".UnLike").addClass('hidden');
$(".Like").removeClass('hidden');
}
$("#likedBy").append(res);
console.log(res);
});
}
function removeLike() {
$.ajax({
type: "POST",
url: "likedata.php",
data: { arg1: "<?php echo $_SESSION['userId']?>", arg2: "<?php echo $p;?>", arg3: "0" }
})
getLikes();
return false;
}
function addLike() {
$.ajax({
type: "POST",
url: "likedata.php",
data: { arg1: "<?php echo $_SESSION['userId']?>", arg2: "<?php echo $p;?>", arg3: "1" }
})
getLikes();
return false;
}
$(document).ready(function() { getLikes();
$(".UnLike").live('click',removeLike);
$(".Like").live('click',addLike);
});
</script>
likelist.php:
<?php
require $_SERVER['DOCUMENT_ROOT'].'/view.class.php';
$view = new view();
include $_SERVER['DOCUMENT_ROOT'].'/profile.class.php';
include $_SERVER['DOCUMENT_ROOT'].'/init.php';
$profile = new profile($dbh);
if(isset($_POST)){
$p = $_POST['p'];
$view->printLikes($profile->getLikes($p));
}
likedata.php:
<?php
include $_SERVER['DOCUMENT_ROOT'].'/profile.class.php';
include $_SERVER['DOCUMENT_ROOT'].'/init.php';
$profile = new profile($dbh);
if(isset($_POST)){
$liker = $_POST['arg1'];
$likee = $_POST['arg2'];
$likeYesNo = $_POST['arg3'];
$profile->insertLikes($liker, $likee, $likeYesNo);
}
?>
答案 0 :(得分:2)
AJAX是非常的,因此getLikes
函数将在addLike
和removeLike
中完成AJAX之前触发。您肯定需要将getLikes
放入$.ajax
的成功回调中,以便它不会检索可能尚未更新的数据
function addLike() {
$.ajax({
type: "POST",
url: "likedata.php",
data: { arg1: "<?php echo $_SESSION['userId']?>", arg2: "<?php echo $p;?>", arg3: "1" },
success: getLikes
})
}
答案 1 :(得分:1)
好的......这是我从使用ajax重复调用中学到的......
IE非常讨厌他们,有时候他们只是按照他们应该的方式工作。试试这个
function addLike() {
var randnum = Math.floor(Math.random()*1001); //Add This Here on all Ajax Calls
$.ajax({
type: "POST",
url: "likedata.php",
cache: false, //Add This Here - Assists in helping Browsers not to cache the Ajax call
data: yourdata + '&random=' + randnum, // Add this to the end of your data you are passing along *'&random=' + randnum,*
success: function() {
getLikes();
}
})
}
添加随机数据会导致浏览器认为它是一个新的呼叫。
此外, random = randnum 不会影响php端的任何内容。