--- title: ':in-range' slug: 'Web/CSS/:in-range' translation_of: 'Web/CSS/:in-range' ---
in-range
CSS 伪类 代表一个 {{htmlelement("input")}} 元素,其当前值处于属性{{htmlattrxref("min", "input")}} 和{{htmlattrxref("max","input")}} 限定的范围之内./* 该伪类可选定任意的<input>, 但只有在该元素指定了取值范围,并且元素值处于指定范围时才有效*/ input:in-range { background-color: rgba(0, 255, 0, 0.25); }
该伪类用于给用户一个可视化的提示,表示输入域的当前值处于允许范围内。
<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"> <label for="value1">Your value is </label> </li> </ul> </form>
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!'; }
规范 | 状态 | 备注 |
---|---|---|
{{SpecName('HTML WHATWG', 'scripting.html#selector-in-range', ':in-range')}} | {{Spec2('HTML WHATWG')}} | Defines when :in-range matches elements in HTML. |
{{SpecName('CSS4 Selectors', '#in-range-pseudo', ':in-range')}} | {{Spec2('CSS4 Selectors')}} | Initial specification. |
{{Compat("css.selectors.in-range")}}