AJAX的容易错误的地方
Ajax.html:35 [Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
Ajax @ Ajax.html:35
(anonymous) @ Ajax.html:58
在chrome控制台是这样的
![Ajax.html:35 [Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org](https://image.shishitao.com:8440/aHR0cHM6Ly9iYnNtYXguaWthZmFuLmNvbS9zdGF0aWMvTDNCeWIzaDVMMmgwZEhCekwybHRZV2RsY3pJd01UZ3VZMjVpYkc5bmN5NWpiMjB2WW14dlp5OHhNelk0TmpRM0x6SXdNVGd3TkM4eE16WTROalEzTFRJd01UZ3dOREV5TVRFME5UQXhNVFkyTFRjNU5EWTNPRFUyTXk1d2JtYz0uanBn.jpg?w=700&webp=1 "Ajax.html:35 [Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org")
这个错误是来自xhr.open(“get”,url,true)；是来自这句代码 第三个参数是异步或者同步的 如果你来自参数 不小心传递成了字符串 就这样了
xhr.open("get",url,"true");就会是这个结果 不信你们去试试