{"action":"opened","issue":{"url":"https://api.github.com/repos/XfLoops/HTML-Questions/issues/2","labels_url":"https://api.github.com/repos/XfLoops/HTML-Questions/issues/2/labels{/name}","comments_url":"https://api.github.com/repos/XfLoops/HTML-Questions/issues/2/comments","events_url":"https://api.github.com/repos/XfLoops/HTML-Questions/issues/2/events","html_url":"https://github.com/XfLoops/HTML-Questions/issues/2","id":54691159,"number":2,"title":"002","user":{"login":"XfLoops","id":7624050,"avatar_url":"https://avatars.githubusercontent.com/u/7624050?v=3","gravatar_id":"","url":"https://api.github.com/users/XfLoops","html_url":"https://github.com/XfLoops","followers_url":"https://api.github.com/users/XfLoops/followers","following_url":"https://api.github.com/users/XfLoops/following{/other_user}","gists_url":"https://api.github.com/users/XfLoops/gists{/gist_id}","starred_url":"https://api.github.com/users/XfLoops/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/XfLoops/subscriptions","organizations_url":"https://api.github.com/users/XfLoops/orgs","repos_url":"https://api.github.com/users/XfLoops/repos","events_url":"https://api.github.com/users/XfLoops/events{/privacy}","received_events_url":"https://api.github.com/users/XfLoops/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/XfLoops/HTML-Questions/labels/TagName","name":"TagName","color":"e6e6e6"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-01-18T09:21:01Z","updated_at":"2015-01-18T09:21:01Z","closed_at":null,"body":"### HTML文件开头的`<!DOCTYPE>`是干什么的？\r\n`<!DOCTYPE> `声明位于文档中的最前面的位置，处于 `<html> `标签之前。此标签可告知浏览器文档使用哪种` HTML `或` XHTML` 规范来解析页面。（重点：告诉浏览器按照何种规范解析页面）"}}