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>
$(docu