Access to XMLHttpRequest at 'XXX' from origin 'XX' has been blocked by CORS policy: No 'Access-Contr

Access to XMLHttpRequest at ‘XXX’ from origin ‘XX’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present o AJAX

跨域请求解决方法；
这个问题折腾了很久，有些建议说在浏览器的后面加
–allow-file-access-from-files
尝试无果。
换了服务器重新测试无果。

原代码如下：

<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){$("#start").click(function(){$.ajax({url:"E:\\software\\install\\xampp\\htdocs\\GTZC\\test.html",dataType : "html", crossDomain: true,async: true, // 使用同步操作 success:function(result){$("#test").html(result);},});});
});
</script>

嗯，然后换了个js版本，，然后我就用了百度的js
如下：

<script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js">
</script>
<script>
$(document).ready(function(){$("#start").click(function(){$.ajax({url:"E:\\software\\install\\xampp\\htdocs\\GTZC\\test.html",dataType : "html", crossDomain: true, //这个没什么卵用，删掉了发现也可以async: true, // 使用同步操作 success:function(result){$("#test").html(result);},});});
});
</script>

再次运行测试就没有问题啦~

华丽的分割线

发现把–allow-file-access-from-files去掉之后，第二天用浏览器测试（我是用apache）又不行了，然后又加了回来，重启浏览器，燃鹅~还是不行，尝试了重启电脑结果发现ok了，hhh

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华丽的分割线

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