HTMLInputElement.multiple

HTMLInputElement.multiple 属性表示一个input是否可以有多个值。目前只有火狐支持 <input type="file">存有多个值。

实例

// fileInput is a <input type=file multiple>
let fileInput = document.getElementById('myfileinput');

if (fileInput.multiple == true) {

  for (let i = 0; i < fileInput.files.length; i++) {
    // Loop fileInput.files
  }

// Only one file available
} else {
  let file = fileInput.files.item(0);
}

See also

Specification

Browser compatibility

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