HTMLHint 工具可以对 HTML 代码做静态代码检查，从而保证 HTML 代码的规范和质量。HTMLHint 工具内置 23 条规则，，建议在 .htmlhintrc 配置文件中将规则尽可能都打开：

{ "tagname-lowercase": true, "attr-lowercase": true, "attr-value-double-quotes": true, "attr-value-not-empty": true, "attr-no-duplication": true, "doctype-first": true, "tag-pair": true, "tag-self-close": true, "spec-char-escape": true, "id-unique": true, "src-not-empty": true, "title-require": true, "alt-require": true, "doctype-html5": true, "id-class-value": "dash", "style-disabled": true, "inline-style-disabled": true, "inline-script-disabled": true, "space-tab-mixed-disabled": "space4", "id-class-ad-disabled": true, "href-abs-or-rel": false, "attr-unsafe-chars": true, "head-script-disabled": true }

每个规则的具体含义，请见下一篇文章htmlhint 规则详解

HTMLHint 配置文件