注意:有些问题不是跨域问题,而是 js 作用域问题
阮一峰 浏览器同源政策及其规避方法 http://www.ruanyifeng.com/blog/2016/04/same-origin-policy.html
阮一峰 跨域资源共享 CORS 详解 http://www.ruanyifeng.com/blog/2016/04/cors.html
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PHP Ajax 跨域问题最佳解决方案 https://www.cnblogs.com/xiezn/p/5651093.html
正确面对跨域,别慌 https://juejin.im/post/5a2f92c65188253e2470f16d
跨域服务调用基本概念及解决方法 https://blog.youkuaiyun.com/iefreer/article/details/11394515
跨域所有问题集合 https://blog.youkuaiyun.com/qq_40028729/article/details/78933319
跨域问题汇总 https://segmentfault.com/a/1190000012158485
不要再问我跨域的问题了 https://segmentfault.com/a/1190000015597029
跨域Ajax请求时是否带Cookie的设置 https://blog.youkuaiyun.com/wzl002/article/details/51441704
完美解决failed to open stream: HTTP request :failed!http://www.cnblogs.com/holyes/archive/2013/05/22/872b233393b7d03e4fd23abbb99a792b.html
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iframe内联框架结合网站自我总结 https://blog.youkuaiyun.com/gaokcl/article/details/81386815
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1,使用iframe内联框架后,如果主页面只有一个iframe,
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那么 top = parent ==>子页面调用主页面元素调用
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2,iframe 子页面本身元素的调用 ===> top = parent = windows
vuejs自学入门: https://blog.youkuaiyun.com/gaokcl/article/details/83088703
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// 判断ajax是否存在
function is_ajax_request()
{
return (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest');
}// 使用
<?php
if(is_ajax_request){
// 是ajax,......
}