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