:in-range - CSS: Cascading Style Sheets 编辑

The :in-range CSS pseudo-class represents an <input> element whose current value is within the range limits specified by the min and max attributes.

/* Selects any <input>, but only when it has a range
   specified, and its value is inside that range */
input:in-range {
  background-color: rgba(0, 255, 0, 0.25);
}

This pseudo-class is useful for giving the user a visual indication that a field's current value is within the permitted limits.

Note: This pseudo-class only applies to elements that have (and can take) a range limitation. In the absence of such a limitation, the element can neither be "in-range" nor "out-of-range."

Syntax

:in-range

Examples

HTML

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

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!';
}

Result

Note: An empty <input> does not count as out of range, and will not be selected using the :out-of-range pseudo-class selector. The :blank pseudo-class exists to select blank inputs, although at the time of writing this is experimental and not well-supported. You could also use the required attribute and the :invalid pseudo-class to provide more general logic and styling for making inputs mandatory (:invalid will style blank and out-of-range inputs).

Specifications

Specification	Status	Comment
HTML Living Standard The definition of ':in-range' in that specification.	Living Standard	Defines when :in-range matches elements in HTML.
Selectors Level 4 The definition of ':in-range' in that specification.	Working Draft	Initial specification.

Browser compatibility

BCD tables only load in the browser

See also

• :out-of-range
• Form data validation