::file-selector-button

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.

::file-selector-button CSS 伪元素代表 type="file" 的 <input> 的按钮。

尝试一下

input {
  margin-top: 1rem;
}

input::file-selector-button {
  font-weight: bold;
  color: dodgerblue;
  padding: 0.5em;
  border: thin solid grey;
  border-radius: 3px;
}

<label for="avatar">Choose a profile picture:</label><br />

<input id="avatar" type="file" name="avatar" accept="image/png, image/jpeg" />

语法

css
selector::file-selector-button

示例

基本示例

HTML

html
<form>
  <label for="fileUpload">Upload file</label>
  <input type="file" id="fileUpload" />
</form>

CSS

css
input[type="file"]::file-selector-button {
  border: 2px solid #6c5ce7;
  padding: 0.2em 0.4em;
  border-radius: 0.2em;
  background-color: #a29bfe;
  transition: 1s;
}

input[type="file"]::file-selector-button:hover {
  background-color: #81ecec;
  border: 2px solid #00cec9;
}

结果

请注意 ::file-selector-button 是一个完整元素，因此与 UA 样式表中的规则相匹配。特别是，字体和颜色不一定会从 input 元素继承。

回退示例

HTML

html
<form>
  <label for="fileUpload">Upload file</label>
  <input type="file" id="fileUpload" />
</form>

CSS

css
input[type="file"]::file-selector-button {
  border: 2px solid #6c5ce7;
  padding: 0.2em 0.4em;
  border-radius: 0.2em;
  background-color: #a29bfe;
  transition: 1s;
}

input[type="file"]::-ms-browse:hover {
  background-color: #81ecec;
  border: 2px solid #00cec9;
}

input[type="file"]::-webkit-file-upload-button:hover {
  background-color: #81ecec;
  border: 2px solid #00cec9;
}

input[type="file"]::file-selector-button:hover {
  background-color: #81ecec;
  border: 2px solid #00cec9;
}

结果

规范

Specification
CSS Pseudo-Elements Module Level 4
# file-selector-button-pseudo

浏览器兼容性

参见