:out-of-range

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

:out-of-range CSS 伪类表示一个 <input> 元素,其当前值处于属性 minmax 限定的范围外。

尝试一下

这个伪类很有用,可以给用户提供一个视觉提示,让他们知道字段的当前值是否超出了允许的范围。

备注: 该伪类仅适用于具有(并可以接受)范围限制的元素。如果没有这样的限制,元素值就无所谓“in-range”和“out-of-range”。

语法

css
:out-of-range {
  /* ... */
}

示例

HTML

html
<form action="" id="form1">
  <p>Values between 1 and 10 are valid.</p>
  <ul>
    <li>
      <input
        id="value1"
        name="value1"
        type="number"
        placeholder="1 to 10"
        min="1"
        max="10"
        value="12" />
      <label for="value1">Your value is </label>
    </li>
  </ul>
</form>

CSS

css
li {
  list-style: none;
  margin-bottom: 1em;
}

input {
  border: 1px solid black;
}

input:in-range {
  background-color: rgba(0, 255, 0, 0.25);
}

input:out-of-range {
  background-color: rgba(255, 0, 0, 0.25);
  border: 2px solid red;
}

input:in-range + label::after {
  content: "okay.";
}

input:out-of-range + label::after {
  content: "out of range!";
}

结果

规范

Specification
HTML Standard
# selector-out-of-range
Selectors Level 4
# out-of-range-pseudo

浏览器兼容性

BCD tables only load in the browser

参见