如何清除的输入文件的反应

代码示例

明确的输入文件html反应

e.target.value = null;

反应的复文件输入

functionThatResetsTheFileInput() {
  let randomString = Math.random().toString(36);

  this.setState({
    theInputKey: randomString
  });
}

render() {
  return(
    <div>
      <input type="file"
             key={this.state.theInputKey || '' } />
      <button onClick={this.functionThatResetsTheFileInput()} />
    </div>
  )
}

类似页面

带有示例的类似页面

其他语言

此页面有其他语言版本

empty row

Русский

..................................................................................................................

Ссылка

English

..................................................................................................................

Link

Italiano

..................................................................................................................

Link

Polski

..................................................................................................................

Link

Română

..................................................................................................................

Legătură

한국어

..................................................................................................................

링크

हिन्दी

..................................................................................................................

लिंक

Français

..................................................................................................................

Lien

Türk

..................................................................................................................

Atıf

Česk

..................................................................................................................

Odka

Português

..................................................................................................................

Referênci

ไทย

..................................................................................................................

เชื่อมโยง

Español

..................................................................................................................

Referencia

Slovenský

..................................................................................................................

Odkaz

Балгарскі

..................................................................................................................

Спасылка

Íslensk

..................................................................................................................

Link

受欢迎的此类别

标籤的相关热门网页

empty row

如何验证，如果输入的文本形式的不是空html