console提示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/.环境:49.0.2623.108 (开发者内部版本) Ubuntu 15.10 (64 位)修订版本d65a1c2f313b54fb0b90bb8a1082e4f5ecba2dda 操作系统Linux