结尾
我有3个按钮在我的页面cart.php在cart.php我有所有的功能工作。当我在结帐页面,我想从购物车中添加或删除一个项目,我的页面刷新。因为我的按钮函数在cart。php中。我在checkout。php
中调用购物车函数我不知道如何使用ajax,但我认为ajax将帮助我在这方面…我怎么能运行这个代码不去购物车和发送到位置:结帐…?
这是我在cart.php上的按钮。
if(isset($_GET['plus'])){
$_SESSION['product_'.$_GET['plus']]+=1;
if($_SESSION['product_'.$_GET['plus']] < 1){
header('Location: checkout.php');
}else{
header('Location: checkout.php');
}
}
if(isset($_GET['remove'])){
$_SESSION['product_'.$_GET['remove']]--;
if($_SESSION['product_'.$_GET['remove']] < 1){
header('Location: checkout.php');
}else{
header('Location: checkout.php');
}
}
if(isset($_GET['delete'])){
$_SESSION['product_'.$_GET['delete']] = '0';
header('Location: checkout.php');
}
$btn_add='<a class="btn btn-success" href="cart.php?plus='.$id.'"><i class="fa fa-plus fa-lg" aria-hidden="true" add_btn></i></a>';
$btn_remove = '<a class="btn btn-warning" href="cart.php?remove='.$id.'"><i class="fa fa-minus fa-lg" aria-hidden="true" remove_btn></i></a>';
$btn_delete='<a class="btn btn-default delete_btn" href="cart.php?delete='.$id.'"><i class="fa fa-times fa-lg" aria-hidden="true"></i></a>';
<script>
function doChanges(job,div,id) {
try { req = window.XMLHttpRequest?new XMLHttpRequest():
new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) { /* No AJAX Support */ }
req.open('get','yourphp.php?job='+job+'&id='+id);
// let the php echo the resultvalue
req.onreadystatechange = function() {
handleResponse(div);
};
req.send(null);
}
function handleResponse(div) {
if ((req.readyState == 4) && (req.status == 200)) {
val=req.responseText;
document.getElementById(div).value=val;
}
}
</script>
<div id="result"></div>
<a href="javascript:doChanges('inc','result','optionalcartitemid'> increase</a>
<a href="javascript:doChanges('dec','result','optionalcartitemid'> decrease</a>
你的php需要为inc/dec做case工作
if ($_GET[job]=='inc') then increase
if ($_GET[job]=='dec') then reduce
(或删除,无论你想发生什么)任何输出将以responseText