第一次用ajax 这个为什么查询不到？
有两个页面一个是ajax页面 一个是查数据的页面 我就是想先把查询到的数据先alert一下 可是什么都弹不出来 提示这个错误：
XMLHttpRequest cannot load file:///D:/wamp/www/chaxun.php. Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https,
是不是数据格式有问题呢 还是哪里的问题？
第一个页面
<!DOCTYPE html><html><head> <meta charset="utf-8"> <title></title> <script type="text/javascript"> function ajax(url,funsucc){ var oAjax=new XMLHttpRequest(); oAjax.open('GET',url,true); oAjax.send(); oAjax.onreadystatechange=function(){ if(oAjax.readyState==4){ if(oAjax.status==200){ funsucc(oAjax.responseText); } } } } </script> <script type="text/javascript"> ajax('chaxun.php',function(str){ alert(str); }); </script></head><body></body></html>第二个页面
chaxun.php
<?php$pdo=new PDO("mysql:host=localhost;dbname=t1","root","");$stmt=$pdo->prepare("select * from user");$stmt->execute();$res=$stmt->fetchall(PDO::FETCH_ASSOC);foreach($res as $v){ echo $v['username'];}?>
回复讨论(解决方案)
有些浏览器要求必须有WEB服务才能访问某些JS函数，不建服务器不行。
XMLHttpRequest cannot load file:///D:/wamp/www/chaxun.php. Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https,
XMLHttpRequest无法加载文件：/ / / D /服务器/网络/ chaxun.php。跨域请求仅支持协议：HTTP，数据，Chrome，Chrome扩展，HTTPS，
请在网站上执行您的程序
XMLHttpRequest cannot load file:///D:/wamp/www/chaxun.php. Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https,
XMLHttpRequest无法加载文件：/ / / D /服务器/网络/ chaxun.php。跨域请求仅支持协议：HTTP，数据，Chrome，Chrome扩展，HTTPS，
请在网站上执行您的程序
这是什么意思呢 我就是在wamp环境下运行的
有些浏览器要求必须有WEB服务才能访问某些JS函数，不建服务器不行。
我就是在wamp环境下运行的啊
你的第一段代码就不是从服务器上运行的
你的第一段代码就不是从服务器上运行的[/
你的第一段代码就不是从服务器上运行的
好的 可以了 谢谢
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