问题描述
我试图做的是通过调用Ajax和PHP的一些数据库的数据。但是,Ajax调用不工作,我无法找到网络上的解决方案。
What I'm trying to do is calling some database data via ajax and php. But the ajax call doesn't work, and I can't find out a solution on the web.
因此,这里是我的code:
So here is my code:
test.php的
<?php
include_once 'db_class.php';
$cat = $_GET['cat'];
$dbconn = new dbconn('localhost', 'root', 'somepsw', 'blog');
$dbconn->set_query("select * from posts where category = '".$cat."'");
echo '<br/>'.$dbconn->query.'<br/>';
$result = $dbconn->result;
$num = $dbconn->num_results;
$array = mysqli_fetch_assoc($result);
echo json_encode($array);
?>
如果我键入网址的浏览器: http://127.0.0.1:82/blog/ws/test.php?cat=css
If i type that url on browser: http://127.0.0.1:82/blog/ws/test.php?cat=css
通过jsonEn code返回的数据是正确的,但是,当我一个HTML页面上用jQuery加载它,他无法读取数据。
The data returned via jsonEncode is correct, but when i'm loading it on a html page with jquery he can't read the data.
test.html的
test.html
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<script>
function ajaxCall() {
var css;
$.ajax({
url: 'test.php',
type: "GET",
data: {cat: css},
dataType: 'json',
success: function(rows)
{
alert(rows);
},
error: function() { alert("An error occurred."); }
});
}
ajaxCall();
</script>
</head>
<body></body>
</html>
在此先感谢。
Thanks in advance.
推荐答案
您的变量 CSS
没有价值。你想使用字符串 CSS
。也许你希望能够装载其他类别了。所以,你的则AjaxCall
功能改成
Your variable css
has no value. You wanted to use the string 'css'
. Maybe you want to be able to load other categories, too. So change your ajaxCall
function to
function ajaxCall(category)
{
$.ajax({
url: 'test.php',
type: "GET",
data: {cat: category},
dataType: 'json',
success: function(rows) {
alert(rows);
},
error: function() {
alert("An error occurred.");
}
});
}
和调用它使用
ajaxCall('css');
这篇关于通过Ajax调用加载的mysqli PHP数据的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!