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property-no-unknown

禁止未知属性。

¥Disallow unknown properties.

a { height: 100%; }
/** ↑

 * This property */

该规则认为 CSS 规范和浏览器特定属性 中定义的属性是已知的。

¥This rule considers properties defined in the CSS Specifications and browser specific properties to be known.

该规则忽略了：

¥This rule ignores:

  • 变量（$sass、@less、--custom-property）

    ¥variables ($sass, @less, --custom-property)

  • 浏览器前缀属性（例如 -moz-align-self、-webkit-align-self）

    ¥vendor-prefixed properties (e.g., -moz-align-self, -webkit-align-self)

使用下面描述的选项 checkPrefixed 打开对浏览器前缀属性的检查。

¥Use option checkPrefixed described below to turn on checking of vendor-prefixed properties.

message 次要选项 可以接受该规则的参数。

¥The message secondary option can accept the arguments of this rule.

有关自定义语法，请参阅 languageOptions 部分。

¥For customizing syntax, see the languageOptions section.

选项​

¥Options

true​

{
  "property-no-unknown": true
}

以下模式被视为问题：

¥The following patterns are considered problems:

a {
  colr: blue;
}
a {
  my-property: 1;
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

a {
  color: green;
}
a {
  fill: black;
}
a {
  -moz-align-self: center;
}
a {
  -webkit-align-self: center;
}
a {
  align-self: center;
}

可选的辅助选项​

¥Optional secondary options

ignoreProperties​

{ "ignoreProperties": ["array", "of", "properties", "/regex/"] }

鉴于：

¥Given:

{
  "property-no-unknown": [true, { "ignoreProperties": ["/^my-/", "custom"] }]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

a {
  my-property: 10px;
}
a {
  my-other-property: 10px;
}
a {
  custom: 10px;
}

ignoreSelectors​

{ "ignoreSelectors": ["array", "of", "selectors", "/regex/"] }

跳过根据此规则检查给定选择器的属性。

¥Skips checking properties of the given selectors against this rule.

鉴于：

¥Given:

{
  "property-no-unknown": [true, { "ignoreSelectors": [":root"] }]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

:root {
  my-property: blue;
}

ignoreAtRules​

{ "ignoreAtRules": ["array", "of", "at-rules", "/regex/"] }

忽略指定 at 规则中嵌套的属性。

¥Ignores properties nested within specified at-rules.

鉴于：

¥Given:

{
  "property-no-unknown": [true, { "ignoreAtRules": ["supports"] }]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

@supports (display: grid) {
  a {
    my-property: 1;
  }
}

checkPrefixed​

如果是 true，则此规则将检查浏览器前缀的属性。默认为 false。

¥If true, this rule will check vendor-prefixed properties. Defaults to false.

鉴于：

¥Given:

{
  "property-no-unknown": [true, { "checkPrefixed": true }]
}

以下模式不被视为问题：

¥The following patterns are not considered problems:

a {
  -webkit-overflow-scrolling: auto;
}
a {
  -moz-box-flex: 0;
}

以下模式被视为问题：

¥The following patterns are considered problems:

a {
  -moz-align-self: center;
}
a {
  -moz-overflow-scrolling: center;
}